Levelable railway electrification construction ladder truck

The invention relates to a leveling railway electrification construction ladder truck which comprises a truck base, a rail grabbing device arranged below the truck base and an operation platform arranged above the truck base, the operation platform is connected with the truck base through an air cylinder, and a groove is formed in the side face of the operation platform in an embedded mode. When the ladder truck inclines to a certain degree, the sliding block is triggered to slide in the horizontal sliding rail and extrude the pneumatic switch, and after the pneumatic switch is pressed, under the pressure action of the operation platform, air in a cylinder barrel of the air cylinder is rapidly discharged through the pressure relief pipe and enters the groove, so that the ladder truck is prevented from falling off. And air in the air cylinder is exhausted, so that the air cylinder is automatically shortened, the gravity center of the ladder truck is lowered, the stability of the ladder truck is improved, and t