Fixed protective cover for sensor

The utility model discloses a fixed protective cover for a sensor, relates to the technical field of sensors, and aims to solve the problems that although a protective door of the conventional fixed protective cover for the sensor is convenient to open and anti-collision buffering of the sensor is realized, the sensor is inconvenient to take down and place, and the conventional fixed protective cover for the sensor is not convenient to use. The device comprises a box body and a box cover, the box cover is rotatably installed at one end of the box body, a bottom buffer plate is slidably installed at the bottom end in the box body, a back plate is fixedly installed at the top end of the bottom buffer plate, a sliding plate is slidably installed at the top end of the back plate, and a top buffer plate is fixedly installed at the top end of the sliding plate. Side buffer plates which are symmetrically distributed are installed on the two sides of the back plate in a sliding mode. According to the utility model, w