Offline tractor trailer matched with trailer suspension lifting system for use

An off-line tractor towing device matched with a trailer suspension lifting system for use comprises a load-bearing cross beam, traction pins used for being installed corresponding to two lower pull rods in the trailer suspension lifting system are arranged at the two ends of the load-bearing cross beam respectively, and limiting connecting plates are connected to the positions, close to the two ends, of the load-bearing cross beam respectively. The limiting connecting plates are provided with limiting pins used for limiting the bearing cross beam to rotate relative to the lower pull rod, the two limiting connecting plates are arranged on the same side of the bearing cross beam, and the other side of the bearing cross beam is connected with a bracket used in cooperation with a front counter weight frame on the off-line tractor. The device can be clamped with a front counterweight frame of the off-line tractor to enable front wheels of the whole off-line tractor to move off the ground, is simple in structure,