The Power Behind Elevating Platforms – Screw Jacks and Bevel Geared Motors
As city skylines continue to rise, so do the demands on construction efficiency, safety, and precision. Super-tall buildings, large-scale bridges, metro tunnels, and nuclear power plants require more than traditional scaffolding and manual labor—they demand smarter, faster, and safer solutions.
Enter the Jump Form System,
a revolutionary construction technology that’s transforming how we build vertically.
Often referred to as a “sky factory” or "climbing formwork system," the jump form allows entire formwork structures to be lifted **en masse** after concrete pouring—enabling continuous, rapid vertical construction.
At the heart of this impressive vertical movement lies a trio of critical mechanical components:
- Lifting Platform Gearboxes
- SWL Series Screw Jacks (Mechanical Actuators)
- Bevel Geared Motors
These aren’t just transmission parts—they are the muscles, joints, and stabilizers that ensure every lift is **smooth, synchronized, and safe**.
How Does a Jump Form System Work? The Role of Transmission Technology
A typical jump form system consists of a steel working platform, formwork structure, lifting mechanism, and control system. Once a floor or core wall has been poured and cured to initial strength, the entire assembly—often weighing dozens of tons—is raised to the next level for the next pour cycle.
This process relies heavily on **precise mechanical actuation**, where each component plays a vital role:
- Lifting Platform Gearbox: Drives travel wheels or hoisting drums for horizontal positioning or auxiliary movement.
- SWL Screw Jack: Serves as the primary or secondary lifting unit, delivering high-force linear motion with excellent synchronization.
- Bevel Geared Motor: Provides compact 90° power transmission ideal for tight spaces such as locking mechanisms, guide rollers, or support arm drives.
Together, they form the backbone of modern climbing systems—ensuring **stability, reliability, and operational efficiency**.
Why These Components Matter: Performance Meets Safety
Lifting Platform Gearbox – The Foundation of Stable Movement
Before and after each vertical lift, the platform often needs fine adjustment or lateral repositioning. This is where our dedicated planetary or helical gearboxes come into play—paired with frequency-controlled motors to enable **smooth starts/stops** and **millimeter-level positioning**.
Key Features:
- High torque output for uneven terrain or heavy loads
- IP55+ protection against dust, water, and construction debris
- Optional electromagnetic brake prevents unintended sliding
Our GTP Series Lifting Platform Gearbox has been successfully deployed in multiple supertall projects over 300 meters, enabling clients to achieve “zero drift, no impact” horizontal transfers.
SWL Series Screw Jack – The Heart of Precision Lifting
The SWL mechanical screw jack is one of the most widely used linear actuators in jump form and climbing systems. Known for its **self-locking capability**, high load capacity, and **excellent synchronicity**, it's perfect for controlled elevation tasks.
Typical Applications:
- Multi-point synchronized lifting (4–16 units operating together)
- Leveling and tilt correction during ascent
- Operation of safety lock pins and support brackets
Technical Advantages:
| Feature | Benefit |
|---|---|
| Self-locking design | No descent when powered off — critical for **高空 safety** |
| Load range: 2.5–50 tons | Suitable for small to large-scale platforms |
| Manual/Electric dual mode | Emergency operation without power |
| Chain-driven synchronization | Multi-unit coordination with **<0.5mm/m error** |
We manufacture the full SWL2.5T to SWL50T series, featuring hardened alloy steel worm gears, precision-ground trapezoidal screws, and durable cast iron housings. With over 100,000 cycles tested, our jacks support flange mounting, nut output, push rod extensions, and full customization.
Bevel Geared Motor – Master of Space Optimization
In confined structural areas within a jump form system, standard parallel-shaft motors simply won’t fit. That’s where the **right-angle output** of a bevel geared motor becomes invaluable.
Common Use Cases:
- Driving guide rollers for alignment
- Operating retractable locking pins
- Rotating auxiliary support arms
- Powering hydraulic pumps on mobile units
Standout Benefits:
- 90° power transfer **saves installation space**
- Efficiency up to 95%, low heat generation
- Fully enclosed housing, IP65 rated
- Optional encoder and brake for automation integration
Our BGM Series Bevel Geared Motor features an integrated cast-iron housing, operates quietly (<72dB), and has been widely adopted in major infrastructure projects across China—including rail transit and underground utility tunnels.
Real-World Success: From Guangzhou East Tower to Xiong’an New Area
📍 Project 1: Shenzhen Landmark Supertall Building (380m)
Configuration: 8 × SWL15T + 4 × GTP-80 gearbox + 6 × BGM77 bevel motor
Result: Average floor cycle reduced to **48 hours**; zero tilt alarms during lifts
“Transmission system performance exceeded expectations.”
📍 Project 2: Xiong’an Underground Utility Tunnel Smart Formwork
Requirement: Full automation with remote monitoring
Solution: SWL jacks with digital displacement sensors + PLC-integrated BGM motors
“Domestic components matched imported quality at **40% lower cost**—and service response was lightning-fast.”
Why Choose Our Transmission Solutions?
We don’t just supply components—we deliver **integrated drive systems** tailored for construction machinery.
- Complete Product Line: One-stop supply of gearboxes, screw jacks, and bevel motors—reducing procurement complexity.
- Heavy-Duty Design: All products validated under real-world overload and fatigue conditions.
- Rigorous Testing: Every screw jack undergoes full-load run testing; gearboxes checked for vibration and sealing integrity.
- Customization Available: Tailor dimensions, voltage, protection class, and control interfaces to your needs.
- Fast Delivery: Standard models ship in 7–15 days; urgent orders can be expedited.
Final Thoughts: Every Meter Upward Deserves a Solid Foundation
While the world looks up at towering skyscrapers, we look deeper—at the engineering that makes them possible.
Every stable ascent, every precise screw rotation, every corner turned by a compact motor… these are the **quiet achievements** behind modern construction.
Ready to elevate your next project?
Looking for drive solutions for jump form systems, climbing platforms, or other lifting equipment? Contact us today!
- 👉 Request your free product catalog, CAD drawings, or a multi-unit synchronization guide.
Let’s build upward—with strength, precision, and confidence.