Cutting head clamping device

The utility model provides a cutting head clamping device which comprises a machine frame and a plurality of clamping assemblies, the clamping assemblies are connected to the machine frame, and the clamping assemblies are arranged on the machine frame at intervals in a staggered mode. The clamping assembly comprises a holding claw and a hydraulic cylinder, one end of the hydraulic cylinder is connected with the rack, the other end of the hydraulic cylinder is connected with the holding claw, and the hydraulic cylinder is used for driving the holding claw to rotate relative to the rack; the holding claw comprises a bearing shaft sleeve and a supporting clamping plate, the bearing shaft sleeve is fixedly connected to one end of the holding claw, one end of the supporting clamping plate is fixedly connected with the bearing shaft sleeve, the other end of the supporting clamping plate extends towards the end away from a holding claw body, and the holding claw is rotationally connected with the rack through the be