✅ Main Functions
Lifting and installing steel arches (steel ribs)
The trolley can pick up, transport, position, and erect steel arches quickly and safely.
Accurate positioning
Hydraulic manipulator arms ensure the steel arch aligns precisely with the tunnel's designed position.
Reduce labor intensity
Minimizes manual lifting, reducing worker fatigue and improving safety.
Improve working efficiency
Faster arch installation compared with manual or crane-based methods.
🔧 Core Components
Chassis / Traveling system
Usually diesel-powered or electric battery-powered
Rail wheeled or rubber-tire chassis depending on the tunnel type
Provides stable movement along the tunnel
Lifting frame / Boom system
Hydraulic lifting column
Telescopic boom for positioning the steel arch
3-axis or 4-axis manipulator for fine adjustments
Gripper or clamping device
Holds the steel arch securely
Supports rotation, swing, and tilt adjustments
Hydraulic system
Drives the manipulator, lift, and movements
Ensures smooth, stable operation
Control system
Manual control panel or wireless remote
Enables precise positioning during arch erection
📏 Typical Specifications (common ranges)
Max arch installation height: 7–12 m
Max arch span: 8–15 m
Load capacity: 1.5–3 tons
Travel speed: 0–8 km/h
Power type: Diesel engine / Battery / Electric
Control: Manual, wired remote, or wireless remote
🛠 Key Advantages
High efficiency: Can erect 20–40 arches per shift
Safe operation: Reduces risk of falling materials
Precise control: Ensures arch alignment accuracy
Suitable for small to large tunnel cross-sections
Strong adaptability to different geological conditions
📘 Common Applications
After drilling and blasting excavation
Installing steel ribs, lattice girders, or I-beam arches
Pairing with shotcrete machines, bolting rigs, and rock drilling machines in a full support cycle
