Automatic induction pile hole protection alarm safety device

The utility model relates to the technical field of construction site construction, in particular to an automatic induction pile hole protection alarm safety device which comprises an installation rod and further comprises a pile hole formed in the top of the ground, a rectangular groove is formed in the outer wall of the top of the installation rod, and a human body infrared sensor is placed in the rectangular groove. The human body infrared sensor is sleeved with a protective sleeve, and connecting grooves are formed in the bottoms of the outer walls of the two sides of the protective sleeve. According to the automatic induction pile hole protection and alarm safety device, through the arrangement of the protective sleeve, the rectangular groove, the adjusting screw rod and the extrusion block, the human body infrared sensor can be well fixed; the device is simple in structure and convenient to use, the human body infrared sensor and the alarm can be well protected through the arrangement of a protection fr