Cutting system and method for hot-line work and quick change device

The invention provides a cutting system and method for hot-line work and a quick change device, and relates to the technical field of robots. According to the scheme, the robot is lifted to the operation preparation position through the bucket arm vehicle, so that the laser device is controlled to move to the operation preparation position, and the operation distance between the laser device and a to-be-cut branch is greatly shortened; a main control unit of the robot determines a target operation position according to image information, depth information, point cloud information and other multi-dimensional information, collected by a camera module, of a surrounding scene of the robot, and the accuracy of selecting a target cutting point on a target branch is improved; then the laser device is controlled to move to the target operation position, when the laser device reaches the target operation position, a laser starting instruction is sent to the laser knife main machine, and the laser knife main machine em