Blocking mechanism

The utility model provides a blocking mechanism which mainly comprises a bottom support structure, a driving air cylinder, a linear bearing assembly and a connecting rod assembly. The bottom support structure comprises a rotating rod with the center rotationally fixed, the overall length of the linear bearing assemblies is set to be one meter, the linear bearing assemblies are installed at the two ends of the bottom support structure, and the lower edges of the linear bearing assemblies are connected with one end of the rotating rod. The lower end of the driving cylinder is connected with the bottom bracket structure, and the upper end is connected with one end of the rotating rod; the two sets of connecting rod mechanisms are fixedly installed at the upper ends of the two sets of linear bearing assemblies correspondingly. The blocking mechanism is simple in structure and low in cost, the installation face of the blocking head is connected with the driver through the linear bearing, the driver is far away fro