Concrete vibrator for engineering construction

The invention relates to the technical field of vibrators, and discloses a concrete vibrator for engineering construction, the concrete vibrator comprises a vibrating rod, a flexible shaft, a heavy hammer and a fixing plate, a vibrating cavity is formed in the side wall of the vibrating rod, and a sliding plate is slidably connected in the vibrating cavity. By designing a heavy hammer, a magnetic ball, a connecting rod, a magnetic hitting ball, a fixing plate, a small air bag, a movable cavity, a swing rod and a driving hammer, a transmission shaft drives a flexible shaft to rotate by utilizing an eccentric block, so that the heavy hammer is promoted to circumferentially rotate in the vibrating rod, and the connecting rod is promoted to drive the magnetic hitting ball to circumferentially rotate under the action of the magnetic ball; the small air bag is extruded through circumferential rotation of the connecting rod and the magnetic hitting ball, air in the small air bag is extruded to enter the movable cavi