China Railway Second Bureau Tunnel Boring Machine-China Weigao Transmission

tunnel boring machine

Tunnel boring machines excavate various soil and rock layers and materials during tunnel and road construction.Our portfolio of high-torque industrial gearheads gives you the power you need.

Reliability in tunnel construction - powerful industrial reducer solutions

Reliable industrial gear unit combination for tunnel boring machines

High torque industrial gearbox solutions for tunnel boring machines.

A modern tunnel boring machine consists of a rotating drill head, main bearings and a propulsion system with downstream safety systems.The choice and type of tunnel boring machine depends on the geological conditions and the amount of groundwater.Starting from the X-series industrial gear units, the combination of durable bevel-helical gear units and P-series planetary gear units is the best drive solution for various tunnel boring machines, which can cope with harsh environments.With its many accessories and reliable options, it meets all requirements of a tunnel boring machine drive.

Robust and durable: drive systems for ring cutters and drills

Ring cutters or drills on tunnel machines usually have a cyclic drive: several pinions are mounted in an internal gear cycle on the periphery of the main bearing and are driven hydraulically or electrically by planetary gears or bevel-helical gear reducers.The slip clutch is equipped with a slip monitoring system and is located between the electric motor and the reducer.Prevents overloading of the entire drive system when the cutter head is jammed.

This solid mechanical engineering requires equally reliable industrial gearbox solutions.All components in the drive system are designed to withstand challenging operating environments.The cooling system of the tunnel boring machine is more efficient, and the reliability and service life of the system can be guaranteed without external cooling devices and large reducers.

The combination of P series planetary reducer and X series bevel gear-helical gear reducer is equipped with a special horizontal casting shell with larger surface area and better heat dissipation.

High-efficiency fan unit (axial fan)

Shaft end pump splash lubrication or pressure lubrication

Efficient sealing system (iron water smoke)

Swing bases and bases

Oil dipstick and oil level display window

PT100 oil bath temperature sensor

Mechanical Coupling/Hydraulic Coupling

ATEX design on request