Heading machine, heading machine cutter disc and cutter replacement method

Abstract

The invention discloses a heading machine cutter disc. The heading machine cutter disc comprises a cutter disc body, wherein a mounting hole is formed in the cutter disc body in a penetrating manner;a freezing part is arranged in the mounting hole; the freezing part is connected with a driving device for driving the freezing part to extend out or retract back to the cutter disc body and is connected with a freezing pipeline which supplies a freezing medium into the freezing part. According to the heading machine cutter disc, because the retractable freezing part is arranged, in a cutter replacement or repairing operation, insertion point type freezing on a soil body arranged at the front end of a heading surface can be carried out to form a freezing isolation layer, so that the strength and the stability of the soil body arranged on the heading surface, and a safe and convenient operation environment is provided for a cutter replacement operation; meanwhile, because the freezing partextends out of the cutter disc body and then a freezing operation is carried out, freezing of a cutter disc steel structure can be reduced, and an ineffective operation of groundbreaking bin frozen soil is reduced and lowered. The invention further discloses a heading machine including the heading machine cutter disc and a cutter replacement method applied to the heading machine cutter disc.

Description

technical field [0001] The invention relates to the technical field of tunnel boring equipment, in particular to a boring machine cutterhead. In addition, the present invention also relates to a roadheader comprising the above-mentioned roadheader cutter head and a tool changing method applied to the above-mentioned roadheader cutter head. Background technique [0002] Tunnel boring machine is the main tool used in today's underground tunnel excavation engineering. As one of the key components of the roadheader, the cutter head is mainly used to excavate the face of the tunnel. A cutter is arranged on the cutter head. [0003] At present, when the tool is worn or damaged, it is necessary for the staff to enter the soil bin or mud bin to work. However, because the soil has not been reinforced, the strength and stability of the soil are insufficient, and there is a certain risk of landslides. At the same time, when the buried depth of the roadheader is high, the infiltratio...

AI Technical Summary

Problems solved by technology

However, because the soil has not been reinforced, the strength and stability of the soil are insufficient, and there is a certain risk of landslides. At the same time, when the buried depth of the roadheader is high, the infiltration of groundwater will also bring great inconvenience to the construction, especially Under the geologically unstable and extremely harsh conditions, it is necessary to pressurize the mud tank to maintain the stability of the tunnel face, and the staff need to work in a pressurized environment

It can be seen that it is difficult to guarantee the personal safety of the operator during the tool change operation.

Images