elescopic Kelly bar type Earth Drilling rig NISSHA ED-series |
NISSHA ED( Earth boy -Nick name ) earth drilling rigs are of “Kelly bar type” earth drilling rigs for constructing various sized bored piles (Cast-in place concrete piles) into comparatively soft stratums where no cobbles and boulders contained. There are two type of rigs, a lattice boom type (Two models) and a telescopic boom type (One model). Applications: Drilling bore holes for constructing various sized cast-in-place concrete piles into the comparatively soft stratums (Maximum S.P.T. N-value 50). Fleet of earth drilling rigs: Ranging from φ1000 ~ 3000mm in shaft diameter and 43~62m in depth. Bell pile bucket (φ1700~4100) Brief specifications: Full-hydraulic drive, Self-propelled, Square/round type telescopic kelly bar with rotary bucket. Lattice boom type/ telescopic boom type/Leader type. Bell-pile bucket with computer monitor/recorder (Optional extra). |
TE4300H | ED5800H | ED6200H-2 |
Typical Operation Proceduresin constructing a cast-in-place concrete pile with a bell pile bottom. |
1. Centering 2. Starting drilling 3. Inserting stand pipe 4.Feeding bentonite 5.Drilling till the specified depth 6.Inserting belling bucket 7. Reaming bore hole bottom 8. Measuring depth 9.Setting up iron-reinforcement cage 10. Inserting tremie tube 11. Cleaning slime by an air-lift 12. 13 Concreting 14.Completing cast-in-place concrete pile with belling bottom. |
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