TR series cantilever type tunneling machine is a new form of tunneling machine developed to meet the needs of tunnels of various sections. This series of tunneling machine has strong rock-breaking capability, high construction efficiency and wide cutting range, and comprises targeted professional models for water conservancy and subway tunnels with small and medium-sized sections as well as highway and railroad tunnels with larger sections, which can meet the construction requirements of tunnels. The tunneling machine has strong geological adaptability and can be stably operated for construction in tunnels with rock hardness within 120MPa: With stable cutting performance and wear-resistant cutting head, it can excavate semi-circular, oval, rectangular, horseshoe-shaped and other special-shaped sections and sections with abrupt changes. The tunneling machine adopts hydraulic and electric components of internationally well-known brands to ensure the operation and control reliability of machine, and is equipped with spray system and fan for dust removal to provide a low-dust environment for construction workers. The complete machine has high configuration, good stability, high automation, safety and reliability. 

Advantages:

1. It is equipped with big-tapered cutting heads with cutting teeth arranged in double helical form to ensure high cutting efficiency; the packing seat is of labyrinth helical sealing structure, which effectively prevents dust ingress. 

2. The remote control is adopted to facilitate comprehensive control and ensure convenient tunneling operation. 

3. The constant power, pressure shut-off and load-sensitive control technologies are adopted; main hydraulic components adopt products of overseas or domestic well-known brands. 

4. A new integrated protection system and LCD displayer in Chinese with self-diagnosis and memory of troubles are adopted; main electric components adopt products of overseas or domestic well-known brands. 

5. The shovel blade is connected to primary conveyor through hinged four-link mechanism; the surface is made of internationally well-known wear-resistant material - sa1750cr steel; the star wheel driving device is of slewing support type. 

6. The centralized lubrication system is equipped to ensure real-time lubrication of lubricating parts, reduce labor intensity and improve product reliability.