Surface temperature detection device for stirring friction welding leader region

The invention discloses a surface temperature detection device for a stirring friction welding leader region. The surface temperature detection device comprises a compression spring type thermocouple, a trolley and an adjusting device, wherein the compression spring type thermocouple is used for detecting the surface temperature of the leader region, the trolley is used for driving the compression spring type thermocouple to move, and the adjusting device is connected with the trolley; the compression spring type thermocouple is connected with the trolley through a thermocouple cover piece; trolley bosses are arranged on the side face of the trolley, and are connected with the adjusting device through a spring adjusting structure; rollers are arranged at the bottom of the trolley. According to the surface temperature detection device for the stirring friction welding leader region, disclosed by the invention, the surface of the welding leader region can be detected, free adjustment of welding positions in longitudinal, transverse and vertical directions is realized, and the device is simple in whole structure, low in cost and high in practicability; moreover, the device is easy to implement and convenient to assemble, and has practical significance on automatic detection of stirring friction welding.