Rotary cut-expanded branch pile machine and construction method of cut-expanded branch pile

• Main Authors: HUANG ZHOUYI, CHEN HUIYUN, MENG YINGYING, GUAN YUNHUI, CHENG YUANMENG, CAI JUNHUA, XIA CHENGMING, HUO JIANWEI, FENG ZHONGJU, WU MIN, HE JINGBIN, HU HAIBO, ZHAO YAWAN, LI TIE, BAI SHAOFEN
• Format: Patent
• Language: Chinese; English
• Published: 21.04.2020
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a rotary cut-expanded branch pile machine and a construction method of a cut-expanded branch pile. The cut-expanded branch pile comprises a drill rod, and a rotary cut-expanding assembly is fixed to the drill rod. The rotary cut-expanding assembly comprises a first force transferring barrel, and a plurality of soil cutting steel plates are hinged to the lower end of the first force transferring barrel. First sliding grooves are formed in the inner walls of the soil cutting steel plates. The lower end of a second force transferring barrel stretches inwards to form a pressing block, and a buckle seat is fixed to a connecting barrel. A spring is mounted on the side wall of the buckle seat, the lower end of the spring and the lower end of a mounting groove are fixed, and the upper end of the spring seat and a buckle are fixedly connected. One end of each connecting rod is fixed into the corresponding first sliding groove, and the other ends of the connecting rods are mounted on the buckle.