Fixing device for acoustic emission sensor on concrete surface

The utility model discloses a fixing device for an acoustic emission sensor on the concrete surface. The fixing device comprises a sensor fixing support, a spring, a sensor cover and a foot cover, wherein the foot cover is arranged at the lower end of the sensor fixing support, the foot cover comprises a base plate, a notch where the acoustic emission sensor is arranged is positioned on the base plate, the spring is fixed on the lower surface of the sensor fixing support above and corresponding to the notch, and the lower end of the spring is connected with the sensor cover. The fixing device solves the actual problems that an existing acoustic emission sensor fixed on the concrete surface is difficult to fix firmly, cannot guarantee the space position of the sensor accurately, is difficult to dismount and assemble, cannot guarantee fixing pressure stressed on the acoustic emission sensor, cannot be used repeatedly and efficiently and the like. The fixing device can be used in a lab to repeatedly monitor acoustic emission of quasi-brittle materials of concrete, rock and the like and can meet requirements for fixing the acoustic emission sensor in actual projects of concrete structures and the like.