Low-altitude head-down-the-hole hammer method LH-DH method
Down-the-hole hammer method under low ceilings, under bridges for railways and roads, and under power lines!
We would like to introduce our "Low-Headroom Down-the-Hole Hammer Method LH-DH Method." Using a driving device to rotate the down-the-hole hammer and bit, the piston inside the hammer cylinder is moved back and forth by air supplied from a high-pressure compressor. This movement causes the bit tip to strike and break stones and rock formations, while the excavated soil is removed using a screw and air lift method. To prevent wear and seizure inside the cylinder due to piston movement, it is necessary to spray oil into the air using a line oiler. 【Construction Examples (Partial)】 ■ LH-DH Method ・Height restriction: 4.55m (under special high-voltage lines) ・Steel material: H250 L=7.5 to 9.5m joint pile construction ・Construction machinery: RX2300 low-headroom construction machine, special auger for low headroom AGD7000 *For more details, please download the PDF or feel free to contact us.
- 企業：ゴープラス
- 価格：Other
