Duplex type complex rail hanging from the complex low point, lift high speed from the complex, shifting large, safe and reliable, can complete lifting traverse and lodging accident does not occur, suitable for any occasion from the complex to the rescue job, hanging longer in the field is very convenient, especially for large rescue equipment can not come into play, but also shows the double hanging rail superiority complex. In order to reduce the weight of a single piece components and solutions from the complex subgrade unstable installation and other operational issues, A-120 type hanging duplex complex rail using Assembled base design, not only can solve the off road vehicle at different heights on both sides of the operating point and some uneven roadbed while maintaining a good level of normal relief from the complex operation, using the connection between the base plate tow can be adjusted from the duplex complex rail hanging of two hydraulic cylinders between the base, so as to solve the vehicle off road motorcycle jacking lowest point since complex issues, Therefore, even if the case of rolling stock swap low road, and do not rise up a second. Because of the flexibility to work when the hydraulic cylinder double hanging rail complex operation, lift and lower the two hydraulic cylinders are mutually affected each other, by the operator to select a hydraulic cylinder which is only held in accordance with the actual situation of the complex job of starting the rescue l, can also lift. However, due to locomotive and wagons off the road after about tilt exist, generally to lift the lower side of the cylinder, when off road motorcycle, you can choose two parallel cylinders when the vehicle is at the same time lifting, can also choose alternate lifting, The same process in the fall. Therefore, the use of hanging duplex type complex rail locomotives can save removed from righting rescue vehicle in front of the complex operation.