Front automatic measuring equipment

The utility model relates to the technical field of automobile hubs, and discloses a front automatic measuring device, which is characterized in that two ends of the bottom of a mounting rack are provided with grooves, the bottom of each groove is provided with a long through groove, the top of each long through groove is fixedly connected with a second cylinder, and a piston rod of each second cylinder is fixedly connected with a measuring rod; the measuring rod sequentially penetrates through the interiors of the groove and the long through groove, the interior of the groove is fixedly connected with a linear displacement sensor, and one end of the linear displacement sensor is fixedly connected to the outer side of the measuring rod; a piston rod of a first air cylinder drives a mounting frame to move downwards, so that the mounting frame abuts against the upper portion of an automobile hub, at the moment, a piston rod of a second air cylinder drives a measuring rod to extend, the measuring rod abuts again