The utility model discloses a kind of lifting guide rail adjusting mechanisms for guardrail repair vehicle, belong to guardrail repair vehicle technical field, including swivel seat, sliding seat, front and rear adjusting oil cylinder, left and right guide rail, left and right adjusting oil cylinder and amplitude cylinder, wherein swivel seat is set on guardrail repair vehicle ontology;Sliding seat is hinged on swivel seat;Left and right guide rail is slidably installed on sliding seat;Lifting guide rail is hinged on left and right guide rail.The sliding seat designed in the utility model can be driven by front and rear adjusting oil cylinder, change the front and rear inclination angle on swivel seat, and further change the front and rear inclination of lifting guide rail, left and right adjusting oil cylinder can drive left and right guide rail to slide left and right on sliding seat, and further change the left and right position of lifting guide rail on guardrail repair vehicle ontology, amplitude cylinder can drive lifting guide rail to rotate on left and right guide rail, change its left and right inclination, to realize the multidirectional adjustment of lifting guide rail, significantly improve the adaptability of guardrail repair vehicle to complex working conditions.
