Car box longeron preset flexibility adjustment device

The utility model discloses a car box longeron preset flexibility adjustment device, including horizontal base, set firmly on horizontal base by servo motor driven screw jack, screw jack's lifter perpendicularly upwards extends, and its tip level has linked firmly lift platform, perpendicularly between lift platform and horizontal base be provided with a plurality of telescopic guide posts, be provided with longeron clamping mechanism at the lift platform upper surface. The utility model has the advantage of simple structure, it is easy and simple to handle, anti -deformation volume before theaccurate control welds. Through the fixed longeron of longeron clamping mechanism, then go up and down through servo motor drive screw jack, the precise adjustment of anti -deformation volume beforerealizing welding the longeron, the flexible operation is accurate, reduces debug time, need not to increase dedicated school clamp utensil and transports the longeron, improves production efficiency,satisfies assembly line au