Novel combined type foot-lock anchor rod node device

The invention belongs to the technical field of tunnel engineering and terrene surrounding rock and particularly relates to a novel combined type foot-lock anchor rod node device. The device comprisesan arched frame, a foot-lock anchor tube and an anchor rod and also comprises a node connecting device, wherein the arched frame is perpendicularly and detachably connected with the node connecting device; the foot-lock anchor tube penetrates through the node connecting device to be in sleeving connection with the anchor rod, and the foot-lock anchor tube is perpendicular to the arched frame. Theshear-resistant and bending-resistant rigidity of the foot-lock anchor tube can be effectively improved by increasing the diameter of the foot-lock anchor tube, the device bears peripheral pressure of the arched frame in the cave circumference and limits displacement of preliminary bracing in the cave circumference direction; through placement of a deep surrounding rock pre-stressed anchor rod, deep binding force of surro