Firmly-assembled cat climbing frame

The firmly-assembled cat climbing frame comprises a first supporting frame and a second supporting frame, a collecting frame is installed between the first supporting frame and the second supporting frame, the two ends of the collecting frame are fixedly connected with installing plates, and fixing mechanisms are installed in the first supporting frame and the second supporting frame. The fixing mechanism comprises a movable cavity, the movable cavity is formed in one side of the interior of the first supporting frame and one side of the interior of the second supporting frame, a fixing block is fixedly connected to one side of the interior of the movable cavity, a first V-shaped plate is rotationally connected to one side of the fixing block, and a second V-shaped plate is rotationally connected to one end of the first V-shaped plate. An operation block is rotated to drive a threaded rod and a sliding rod to rotate, and a third movable block moves up and down to drive a fixed rod to move up and down, so that