Inversely T-shaped spring anti-theft lock for truck fuel tank

The utility model discloses an inversely T-shaped spring anti-theft lock for a truck fuel tank, belonging to a fuel tank of a vehicle power device, particularly an anti-theft component for the fuel tank. The inversely T-shaped spring anti-theft lock comprises a tank body, an oil inlet and an anti-theft device. The inversely T-shaped spring anti-theft lock is characterized in that the anti-theft device is in an inversely T-shaped structure of a three-way steel tube with an upper thick part and a lower thin part; a rigid spring is welded inside the bottom of the steel tube; the free length of the rigid spring is more than the diameter of the oil inlet of the tank body of the fuel tank; the caliber of the spring is less than the caliber of the steel pipe; and openings are arranged at the both ends of the spring. When the inversely T-shaped spring anti-theft lock is mounted, the spring is compressed at first, and the inversely T-shaped spring anti-theft lock disclosed by the utility model is inserted into the oil