Internal expansion type pile clamping and turning device

• Main Authors: YANG ZHENYU, CHEN FUJIE, HAYASHI, NOBORU, ZHANG JIAN, CHEN YUANWAN, CHEN ZENGZENG
• Format: Patent
• Language: Chinese; English
• Published: 03.02.2023
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

When a telescopic assembly drives an inner supporting frame to move towards one side of a main hoisting part through a driving part, a wedge-shaped block is limited by a pile clamping groove, and a guide rail is obliquely arranged on the inner supporting frame; the wedge-shaped block gradually slides to the end close to the inner wall of the outer supporting block along with the end, away from the inner wall of the outer supporting block, of the guide rail, and then the wedge-shaped block is pushed to move outwards to penetrate through the pile clamping groove, so that the wedge-shaped block expands to support the inner wall of the steel pipe pile; the self-weight of the steel pipe pile can be converted into vertical acting force on the inner wall of the steel pipe pile, so that the friction force of the pipe wall can be improved, the effect that the steel pipe pile is pulled more and more tightly can be achieved, pile disengaging is avoided, the equipment safety is improved, meanwhile, the steel pipe pile wi