Piezoresistor for protecting electric locomotive

The utility model relates to a piezoresistor for protecting an electric locomotive, which comprises a piezoresistor body, the outer side of the piezoresistor body is movably connected with an explosion-proof mechanism, and the lower surface of the piezoresistor body is fixedly connected with a connecting wire. The explosion-proof mechanism comprises a first explosion-proof plate movably connected to the outer side of the piezoresistor body, and the left side wall of an inner cavity of the first explosion-proof plate is fixedly connected with at least two springs. According to the piezoresistor for protecting the electric locomotive, the piezoresistor is fixed inside through the explosion-proof mechanism, so that fragments are prevented from flying around when the piezoresistor is broken down or cracked while the piezoresistor is fixed, other electric appliances are ensured not to be damaged, the loss is reduced to the minimum, and the service life of the piezoresistor is prolonged. Meanwhile, protection is im