Replacing the girder can make the car meet the use requirements, but this repair method takes a long time, often taking several days to ten days. The repair cost of replacing the girder is high, ranging from several thousand yuan to tens of thousands of yuan. In particular, delays often cause great economic losses, which is even more unacceptable. Therefore, it is generally not considered to replace the girder.

After direct reset, repair the fracture or crack with butt welding. This repair method is to correct the bending part of the girder and directly go uphill on the inner and outer surfaces of the fracture or crack.

Repair the damaged parts by butt welding without disassembly and repair, and strengthen some bandages at the damaged parts if necessary. In the process of repair, special attention should be paid to the preparation before welding.

Extended data:

The structure of the engine, chassis and cab of a dump truck is the same as that of an ordinary truck. High-pressure oil enters the lifting hydraulic cylinder through the distribution valve and oil pipe, and there is a cab safety protection plate at the front end of the carriage.

The engine drives the hydraulic pump through the transmission and power take-off, and the hydraulic tilting mechanism of the carriage consists of an oil tank, a hydraulic pump, a distribution valve, a lifting hydraulic cylinder, a control valve and an oil pipe.

The engine drives the hydraulic pump through the transmission and the power take-off, and the high-pressure oil enters the lifting hydraulic cylinder through the distribution valve and the oil pipe, pushing the piston rod to tip the carriage. Backward tilting is common. By controlling the movement of the piston rod through the control system, the car can be stopped at any required tilting position. The bracket is reset by its own gravity and hydraulic control.