TWI794006B

A dynamic tester, comprises: a fixed frame that includes a base plate, two fixed columns and a sliding plate, wherein the base plate has an upper bearing surface and two fixed columns are erected on one side of the upper bearing surface, a movable bracket is set on the other side of the upper bearing surface, two vertical slide rails are set on the two fixed columns, and the sliding plate is slidably set on the two vertical slide rails; a movable bracket that includes two supporting columns, a supporting plate and a movable bottom plate, wherein the two supporting columns are erected on the upper surface of the movable bottom plate, two second slide rails are arranged on the side of the two supporting columns facing the fixed frame, the support plate is slidably set on the two second slide rails, the movable bracket moves on the upper surface and moves closer or farther away from the sliding plate, and the support plate faces the sliding plate; and a driving assembly that is combined with the sliding plate, w