Concrete blocking device for construction joint

The utility model provides a concrete blocking device for a construction joint, which relates to the technical field of concrete blocking devices and comprises an adjusting mechanism, the adjusting mechanism comprises a fixed steel pipe, a fixing mechanism is arranged on one side of the fixed steel pipe, a movable steel pipe is arranged on the outer surface of the fixed steel pipe, and the movable steel pipe is connected with the fixing mechanism. A first nut is arranged on one side of the top end of the movable steel pipe. By means of the installed fixing mechanism and the adjusting mechanism, a worker can insert a supporting force rod into a beam firstly, then insert a vertical rod into the bottom of the beam along a clamping groove formed in one side of a fixing steel pipe, concrete pouring is conducted after fixing is completed, the device is taken out after concrete pouring and tamping are completed, operation is convenient, repeated use is achieved, and cost is low. The joint concrete poured through the