Height-adjustable aluminum beam structure capable of being provided with air outlet of central air conditioner

A height-adjustable aluminum beam structure capable of being provided with an air outlet of a central air conditioner comprises an air conditioner fixing beam, an air conditioner transfer beam, a fixing frame and a hoisting assembly, a second embedding groove is formed in the edge of the top face of the air conditioner fixing beam, and the inner side of the groove bottom of the second embedding groove is sunken downwards to form a second small-size embedding groove; a first embedding groove is formed in the edge of the bottom face of the air conditioner transfer beam, and the inner side of the groove bottom of the first embedding groove is sunken upwards to form a first small-size embedding groove. The top face of the air conditioner fixing beam extends outwards to form a second connecting face, a second hanging piece groove is formed in the top face of the second connecting face, the air conditioner transfer beam extends outwards to form a first connecting face, and a first hanging piece groove is formed in