ARTICULATED ARM AND ANALYTICAL TEST INSTRUMENT

The present application relates to the field of inspection equipment, and in particular, to an articulated arm and an analytical test instrument. The articulated arm comprises a rack, a rotating shaft assembly, a first rotating arm, a second rotating arm, and driving mechanisms. The first rotating arm is fixedly connected to the rotating shaft assembly. The second rotating arm is rotatably connected to the first rotating arm. The driving mechanisms comprise a first driving mechanism, a second driving mechanism and a third driving mechanism, and the driving mechanisms are all connected to the rack. The entire articulated arm can produce a displacement in the vertical direction, and both the first rotating arm and the second rotating arm can rotate by degrees. Compared with the prior art, the articulated arm is not just used for sampling on a certain circumference having a fixed radius, so that the sampling range is greatly enlarged, and the sampling area is more flexible. Connecting the driving mechanisms to t