Tool bit cooling device of shield tunneling machine or tube push bench

The utility model relates to the technical field of tunnel construction, in particular to a tool bit cooling device of a shield tunneling machine or a tube push bench, which comprises a cooling module, a monitoring module and a controller, and the cooling module comprises a refrigerator, a circulating water pump and a cooler. The cooler is configured to be inserted underground and located in front of a tool bit of the shield tunneling machine or the pipe jacking machine, the refrigerator, the circulating water pump and the cooler are sequentially connected in series and form a circulating liquid path, and cooling liquid is arranged in the circulating liquid path; the monitoring module is configured to be inserted underground and located in front of a tool bit of the shield tunneling machine or the pipe jacking machine, and the monitoring module is configured to monitor the temperature near the monitoring module and measure the distance between the monitoring module and the tool bit of the shield tunneling mac