Excavator Boring Shield System
Excavator Boring Shields (EBS) and the EX‐50 Excavator are designed for manned‐entry, open‐face mechanical excavation of large diameter pipe jacking, liner plate, and ring‐beam and lagging tunnel building applications.
The slant faced Excavator Boring Shield and pipe are hydraulically advanced with the Keyhole Jacking/Thrust Frame or with the Tunnel Boring System and 5200 Pump Unit thrust cylinder.
The operator controls the EX‐50 Excavator’s claw with a joy stock and foot controls to excavate spoil for removal onto the belt conveyor to the Haul Unit (Muck Cart) for disposal.
The EX‐50 Excavator’s rotating boom has a full range of motion, including extension beyond the bore’s face to remove obstructions, as necessary.
Tunnel line and grade are controlled with the use of a standard passive pipe laser. The operator assesses the location of a fixed laser point on the EBS cutter head and makes adjustments as necessary.
Sand shelves come standard with every EBSs purchased. They can also be equipped with closeable hydraulic doors to prevent subsidence into the tunnel interior.
FEATURES:
- Simple, cost‑effective solutions for large‑diameter pipe jacking with face‑access for obstruction removal.
- Perform best in sand, medium to stiff clay, dry or dewatered soil, and weathered rock without groundwater.
- EX‑50 excavator is interchangeable between EBS models.
SPECIFICATIONS
Print This Page| Model | Shield OD | On-Board Power Pack | Excavator Controls |
|---|---|---|---|
| EBS 840 | 100-102 in. | Optional | EX-50 |
| EBS 960 | 114-in. | Optional | EX-50 |
| EBS 1080 | 128-in. | Standard | EX-50X |
| EBS 1200 | 144-in. | Standard | EX-50X |
| EBS 1440 | 168-in. | Standard | EX-50X |
Increase kits are available. Hydraulic Closeable Doors Optional on all diameters.
Testimonials
Akkerman has kept us on line and grade every time. Very efficient and accurate system with great prompt support.