The trailer frame of the mobile generator set is made of welded trough beam, which has the advantages of reasonable node selection, high strength and good rigidity.At the same time, it is equipped with a steel plate spring suspension structure.The trailer adopts a height adjustable pin traction frame, suitable for various heights of tractors;Adopt circular steel tube welded through axle, compact structure, safe and reliable.The four corners of the frame are equipped with mechanical support devices, which are equipped with inertial driving braking, parking braking and detachment emergency braking to ensure the safety of the unit under various conditions.The front end of the frame is equipped with a support wheel, which can bear the vertical load of the unit and also has a guiding function.The vehicle is equipped with steering and brake indicator lights and a standard plug for the rear lights.