High-precision three-dimensional GNSS displacement detection apparatus

The utility model discloses a high-precision 3D GNSS displacement test device, which comprises a main chassis, an auxiliary chassis, a main connection rod, an auxiliary connection rod, an X-direction micro-adjuster, a Y-direction micro-adjuster, a Z-direction micro-adjuster, and a GNSS antenna connector, wherein the rectangular auxiliary chassis is arranged fixedly on the round main chassis, the main connection rod is connected with the auxiliary chassis by the X-direction micro-adjuster and the Y-direction micro-adjuster, the auxiliary connection rod is connected with the main connection rod by the Z-direction micro-adjuster, the GNSS antenna connector is connected with the auxiliary connection rod, the auxiliary connection rod is respectively connected with the GNSS antenna connector and the main connection rod. The high-precision 3D GNSS displacement test device has the advantages of simple structure, convenient use, safety, reliability, and meeting the precision requirement of inspection and deformation monitoring of high-precision GNSS receiver, and improving working efficiency.