Movable cart type analysis testing device convenient for sampling

The utility model discloses a mobile cart type analysis testing device convenient for sampling, which comprises a tester main body, the top end of the tester main body is provided with a limiting groove, according to the mobile cart type analysis testing device convenient for sampling, a limiting block drives a supporting plate to move to the top end, and a limiting spring supports the state of the supporting plate; the limiting block drives the fixing plate to move synchronously, the fixing plate drives the first clamping plate to move, the first clamping plate drives the fixing block to slide under the limitation of the fixing rod till the top end of the third clamping plate makes contact with the bottom end of the bottom plate, the third clamping plate applies acting force to the bottom end of the bottom plate, and the bottom plate drives the crank to rotate under the action of the knob spring. Then the third clamping plate moves to the top end of the bottom plate, elastic deformation of the knob spring re