Square head axle clamp utensil

The utility model provides a square head axle clamp utensil belongs to mechanical technical field. This square head axle clamp utensil, including pressing from both sides tight strip no. 1, pressing from both sides tight strip no. 2, pressing from both sides tight strip no. 3 and press from both sides tight strip no. 4, the upper surface threaded connection who presss from both sides tight strip no. 1 has bracing piece no. 1 and bracing piece no. 2, and the other end of bracing piece no. 1 and bracing piece no. 2 all is provided with the external screw thread, presss from both sides to have seted up through -hole no. 1 and through -hole no. 2 on the tight strip no. 2, and bracing piece no. 1 passes the through -hole and advances line location through set nut no. 1 in the lump, and bracing piece no. 2 passes through -hole no. 2 and through the binary line location of set nut, the both ends that press from both sides tight strip no. 1 are articulated respectively to have connecting rod no. 1 and a connecting ro