TUNG FENG Co., Ltd. - Our Patents

Construction Method for Anti-Collapse Diaphragm Walls in Special Geological

Our company specializes in diaphragm wall construction under challenging geological conditions, offering innovative anti-collapse techniques that ensure structural stability and safety. This method is specifically designed for gravel layers and weak soil, full-casing bored pile drilling technology combined and filling with low-strength solidifying materials to create a stable anti-collapse zone, thereby preventing D-Wall trench collapse.

This technology enhances construction efficiency by reducing the repetitive backfilling and reinforcement steps required in conventional methods, while ensuring the quality and stability of diaphragm wall construction. It is particularly suitable for high-rise underground structures, foundation engineering, and other construction projects where soil stability is critical.

Through precise planning and professional execution, we effectively reduce construction risks, maintain project schedules, and provide more cost-effective solutions.

Drilling Casing with Inner Cutting Teeth

Our patented “Drilling Casing with Inner Cutting Teeth” was developed specifically for underground obstacle removal projects. Featuring a dual cutting-tooth design (both inner and outer teeth), this technology enables efficient cutting and extraction of underground obstacles with less noise or vibration, making it ideal for construction sites with strict environmental requirements.

The casing is powered by rotator. The outer cutting teeth form the initial circular groove, while the inner cutting teeth further reduce the obstacle’s volume, facilitating easier lifting and removal. This innovation significantly improves construction efficiency and safety, eliminating the need to fragment obstacles before removal, as required by conventional methods.

In addition, the casing is equipped with high-strength tungsten carbide blades that are both wear-resistant and replaceable, thereby lowering maintenance costs. Its spiral chip-removal grooves ensure smooth discharge of debris, enabling uninterrupted operations. This patented technology represents an ideal solution for the future of foundation engineering.

Multi-Claw Lifting Device for Underground Obstacle Removal

Our newly patented “Multi-Claw Lifting Device” is designed for underground obstacle removal. Powered by a mechanical drive system, its multi-claw structure enables the safe and efficient removal of underground obstacles without noise or vibration.

The device consists of a lifting frame, powered support frame, multiple claw assemblies, and a drive system. The claws open and close under power, securely gripping underground obstacles before lifting them. Compared to conventional methods that rely on vibration or breaking, this device significantly reduces noise, enhances operational safety, and ensures obstacles can be retrieved intact, making it highly suitable for environmentally sensitive construction sites.

The design is adaptable to various underground structures and site conditions, with adjustable claw configurations and operating modes that improve both flexibility and efficiency.

Underground Obstacle Lifting System

The patented “Underground Obstacle Lifting System” was developed for urban renewal projects, providing a safe and efficient solution for removing underground obstructions left behind after building demolition. The system comprises a fixed base, full-casing drilling machine, support beams, primary and secondary lifting power sources, and pulley assemblies. Its dual lifting mechanism first loosens the obstacle and then removes it in a stable manner, eliminating safety hazards commonly associated with traditional methods.

The innovation lies in combining a full-casing drilling machine to cut into underground structures with support beams that stabilize equipment during lifting, ensuring no displacement occurs. The primary lifting source performs the initial loosening, reducing friction and resistance, while the secondary lifting source completes the safe extraction, preventing risks such as lifting point failure or equipment overturning. This system can be applied to various underground structures, including slabs, foundation piles, pile walls, and diaphragm walls.

This invention significantly enhances both construction safety and efficiency. It is particularly well-suited for high-density urban renewal environments, reducing environmental impact while improving overall project quality.