Portable GIS ultrahigh frequency detection device

The invention discloses a portable GIS ultrahigh frequency detection device, and belongs to the field of GIS ultrahigh frequency detection. The portable GIS ultrahigh frequency detection device comprises a main box, an upper cover is arranged at the top end of the main box, a clamping groove is formed in the top end of the interior of the main box, a clamping block is fixedly installed at the position, corresponding to the clamping groove, of the bottom end of the upper cover, the clamping block is matched with the clamping groove, a host is arranged in the main box, and a limiting rod is arranged at the top end of the host. The limiting rod is slidably connected with the host, an air cylinder is fixedly installed in the main box and located below the host, an output shaft of the air cylinder is fixedly connected with the top end of the host, and the host is slidably connected with the main box through the air cylinder. Through the buffer plate, the winding shaft and the limiting rod,when the main box is impa