Device and method for in-situ non-excavation treatment of karst collapse risk point

• Main Authors: ZHAO ZHIQIANG, LI HAIXIANG, LI CHUANLEI, LU QIANQIAN, LIU WEN, LI CHANGSUO, LI FU, RYU HO-YEON, XI HONGFENG, ZHANG YUNFENG
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention relates to the technical field of non-excavation repair equipment under the working condition of pipeline collapse deformation, in particular to a device and method for treating karst collapse risk points in an in-situ non-excavation mode, and the device comprises a propelling cylinder, two outer discs, an inner shaft, a drill bit, an opening mechanism, a reversing transmission mechanism, a synchronous transmission mechanism and a driving mechanism. The opening mechanism comprises a plurality of first arc-shaped plates, a plurality of second arc-shaped plates, a plurality of first transmission rods and a plurality of second transmission rods. The reversing transmission mechanism comprises an annular electromagnet, a bidirectional fluted disc, an inner gear and a first fluted disc, and a second fluted disc is formed on one side of the inner fluted disc. The multiple second arc-shaped plates and the multiple first arc-shaped plates which are arranged in a staggered mode inside and outside are sync