Method and system for measuring posture of cutting part of cantilever type roadheader based on laser visual tracking technology

The invention relates to a cantilever type roadheader cutting part posture measuring method and system based on a laser visual tracking technology. According to the method and system, a cantilever type heading machine cutting part, a shaft pin, a rotation center and a rear side machine body are included, a laser tracking device is installed on the front side of the cantilever type heading machine cutting part and used for emitting laser to a semitransparent target, and the device is composed of a two-degree-of-freedom rotary table, a laser ranging module, a magnetic meter seat, a shell and a glass cover; an image processing device is arranged on the rear cover of the machine body, is used for acquiring target pictures and consists of a semitransparent target, an industrial camera, a camera bracket, a sliding rail, a self-locking sliding block, a sealing cover, a master control box and a master control module; the master control module can be connected with the laser tracking device and the image processing de