Foundation pit range detection device for power transmission and transformation project

The utility model provides a foundation pit range detection device for power transmission and transformation engineering, which comprises a mounting plate, a rotating rod is rotatably mounted on the mounting plate, a thread is arranged on the rotating rod, the rotating rod is connected with a lifting block through the thread, a screw hole and a through hole are formed in the lifting block, the thread is connected with the screw hole, and the through hole is connected with the rotating rod. A limiting column is mounted on the mounting plate, and an infrared detection device is mounted on the lifting block; the driving gear is driven by the rotating shaft to rotate synchronously, the driven gear also rotates along with the driving gear, the rotating rod can be driven to rotate when the driven gear rotates, the rotating rod can enable the lifting block to move downwards through matching of threads and a screw hole, and the lifting block can move downwards to drive the infrared detection device to enter a foundat