Site heat treatment device for air cylinder groove

The invention relates to a site heat treatment device for an air cylinder groove, which comprises a device main body and a control system; the device main body is provided with a main heating zone andan assistant heating zone; the main heating zone covers a to-be-repaired position of the air cylinder groove, and the assistant heating zone is located in at least one side of the main heating zone;heating components are arranged in the main heating zone and the assistant heating zone; the control system is connected with the heating component for controlling the work of the heating component and the heating temperature. Through the main heating zone, the to-be-repaired zone is heated; the main heating zone is performed with assistant heating and heat insulation through the assistant heatingzone, so as to realize heat treatment of every part of the groove; the heat treatment temperature and time are effectively controlled, thus no partial overheat is guaranteed; the main heating zone and the assistant heating zon