Throttling mechanism for parallel movement of three joints in different places

The invention discloses a three-joint remote parallel motion throttling mechanism, and particularly relates to the technical field of experimental aerodynamics. Comprising a throttling cone supporting rod, a connecting rod, a linear motor and a fixing base, the middle of the connecting rod is connected to the fixing base through a first pin shaft to form a fixing hinge, and sliding grooves are formed in the upper end and the lower end of the connecting rod in the axial direction; the end, close to the air inlet channel outlet, of the throttling cone supporting rod is fixedly connected with a throttling cone, the end, away from the air inlet channel outlet, of the throttling cone supporting rod is connected into a sliding groove in the upper end of a connecting rod through a second pin shaft, and the tail end of a linear motor shaft is connected into a sliding groove in the lower end of the connecting rod through a third pin shaft. The central axis of a linear motor shaft is parallel to the central axis of an