Sand filling device for compactness detection

The utility model provides a sand filling device for compactness detection, which belongs to the technical field of compactness detection and comprises a sand filling cylinder, a base plate with a sampling hole, two limiting components and a driving component. The two limiting assemblies are symmetrically arranged on the two sides of the axis of the sampling hole, the limiting assemblies are connected with the base plate, the limiting assemblies are provided with sliding parts capable of sliding in the horizontal direction, the sliding parts are provided with arc-shaped plates coaxial with the sampling hole, and the arc-shaped plates are matched with the outer side face of the sand filling cylinder. The driving assembly is used for driving the two sliding parts to synchronously and reversely slide. According to the sand filling device for compactness detection, the sand filling cylinder is placed on the bottom wall of the base plate and located between the two arc-shaped plates, the driving assembly drives th