Clamping device of biological teaching instrument test tube

The utility model belongs to the technical field of experiment teaching instrument ware technique and specifically relates to a clamping device of biological teaching instrument test tube, including fixed clamping plate and handheld pole, fixed clamping plate's one end and handheld pole fixed connection, one of them side interval of fixed clamping plate is provided with the limit screw that two levels just were parallel to each other, two limit screw is last to be equallyd divide other cover and is equipped with the spring, two the wherein one end of spring is divided equally and bie is connected with fixed clamping plate, and the one end that fixed clamping plate was kept away from to two springs is connected with the movable clamping plate who is on a parallel with fixed clamping plate jointly, and offers the jack of being connected with two limit screw cooperations on the movable clamping plate. The utility model has the advantages of simple structure, convenient to use, can effectively carry out the centr