Shield machine sealing element

Shield tunnel boring machine, referred to as "shield machine". It is a special engineering machine for tunneling. Modern shield tunneling machine integrates light, machine, electricity, liquid, sensor and information technology. It has the functions of excavating and cutting soil, transporting ballast, assembling tunnel lining, and measuring and guiding correction. Shield machine has been widely used in subway, railway, highway, municipal, hydropower and other tunnel projects.

When the shield machine is used for tunneling, the construction site is mostly underground or in the mountain. Sand, gravel or muddy water continuously erodes the shell, especially into the shield along the sealing gap between the cutter head rotor and the front shield shell Inside the casing, the main drive system or main bearings are worn or scrapped, which affects the normal operation of the equipment. In severe cases, the entire tunnel project is scrapped and the losses are heavy.

The actual working conditions determine that the reliability of the sealing element between the cutter head rotor and the front shield shell is extremely high. The quality reliability and life of the sealing element directly affect the normal use and engineering progress of the shield machine equipment.

Beijing Jianke Huifeng Technology Co., Ltd. designed and developed a multi-lip type large shield machine lip seal ring based on the actual needs of the shield machine on-site use and the strength of the company. It has a simple structure, reliable work and long service life. Long, to meet the needs of the market. The new lip seal ring of the shield machine is now used in the southern urban tunnel project, which meets the requirements of the complex geological conditions on site and has a good effect.

The company is vigorously promoting the market and has applied for utility model patents, patent number: 201320079650.0.

Working conditions; tunnel, subway excavation

Working pressure: ≤2MPa

Working temperature: 10℃～75℃

Working medium: water, sand, mud, grease, etc.

Material: Special polyurethane

Design standard: GB/T3672.1-2002