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. The electric control box, seals and structural members are designed for high-altitude environment, and are suitable for operations in high-altitude environment below 4,500m above sea level. 

2. The box-type telescopic cutting section is used to realize one-time excavation and molding of tunnel with medium and large-sized sections. It is equipped with a variety of cutting mechanisms and a variable-frequency speed control system. 

3. It can be equipped with remote visual intelligent control system and automatic interception system. With high positioning accuracy and low delay, it reduces the number of workers on tunnel face and facilitates unmanned excavation operation. The shovel blade is designed with open type driven wheel to prevent the chain being blocked and empower strong charging capability. 

4. The gantry driven by motor with adjustable height is adopted to increase the operating height of primary conveyor, which can satisfy the direct receiving and transfer needs of medium-sized trucks. 

5. It is equipped with dual-cooling system, automatic cable reeling mechanism, remote control for sighting distance and high-strength traveling mechanism, etc. for operations in tunnel environment.