Bridge crane main beam pressure monitoring device

The utility model discloses a bridge crane main beam pressure monitoring device which comprises a bridge crane main body, an alarm and a display screen, and the bridge crane main body comprises a supporting column, a bearing beam and a trolley. In the utility model, the hook mechanism is combined with the weight, the trolley controls the length change of the first steel cable to drive the second wheel seat at the bottom of the detection bin and the lifting hook mechanism to move upwards, and the gravity of the weight pulls the pressing plate, the pressing plate compression spring and the pressure sensor through the sliding rod to detect the pressure and display data in the display screen in real time; the bridge crane main beam pressure monitoring device is simple in structure and convenient to observe artificially, when the pressure exceeds a preset value, the bottom of the pressing plate greatly compresses the spring and simultaneously presses the normally-open switch, and the alarmsounds, so that an operat