QJ-280 bridge inspection vehicle is a kind of self-propelled inspection machine for bridge, tunnel and aerial work. The machine integrates mechanical, electrical, hydraulic and pneumatic functions. It has high-speed self-propelled function and can be operated independently. The operation of QJ-280 bridge inspection vehicle can meet the requirements of various construction sites. It has the characteristics of short auxiliary time, no damage to the original track bed and no influence on the operation of adjacent lines. It has multiple safety and ant i-falling measures, has an emergency pickup function, has a 6-channel video monitoring system, has travelling and operation safety interlocks and alarm functions. With adjacent line lock, torque limit and wind speed alarm function; equipped with emergency travelling system, the emergency system can be used to leave the site when the PLC fails.