The ETR-series trolley system from Enerpac provides an alternative method to traditional skidding methods. The system is comprised of electrically driven trolleys that can carry heavy loads along a fixed track, all 
Source: Enerpaccontrolled by a handheld, wireless control.
A typical system includes four trolleys, two tracks and one controller. Load movements are more stable due to its continuous progression and precisely controlled travel speed. Each trolley is tested under witness of Lloyd’s Register, are statically tested at overload and are subject to a loaded functional test.
Features
- Capacity per unit: 140 tons
- High transport speed
- Low: 3.1 ft/minute
- No load: 4.7 ft/minute
- Suited for repetitive movements
- Runs on pre-constructed steel beams
- Ease of maintenance
- Clean operation
- Built-in synchronization
- Modular system
Field proven
The trolley system was successfully deployed on a jack-up vessel for Geotechnical & Offshore Solutions’ HoheSee and Albatros offshore wind farm projects. This involved transporting 560 ton offshore wind monopile transition pieces 295 ft across the ship’s deck to bring them within range of the on-board crane for off-shore installation. It was a fast-performing solution that minimized the time during load-out of foundations on board their offshore installation vessels.
Wireless control
The wireless control system offers superior safety and control, and includes the following features.
- Automatic synchronization of traveling with an accuracy of 15 mm (0.60 inch)
- Local control with pendant at each trolley
- Encrypted bi-directional communication that eliminates interference from other devices
- Remote operation using multi-channel wireless (2.4 GHz) or wired (RS-485) control
- High- and low-speed settings
- Emergency stop switch
