Hinge chain tightener for lifting chain of feeding machine

The utility model relates to a chain tightener for hinging a lifting chain of a feeding machine, which belongs to the field of chain link replacement devices, and comprises a connecting rod, a movable seat, a roller hook I, a fixed seat, a roller hook II, a limiting block and a locking block, the connecting rod is sequentially provided with a threaded section, a round rod section and a prism section, and the threaded section of the connecting rod is in threaded connection with the movable seat. A roller hook I is hinged to the movable seat, a limiting block is fixedly arranged on the round rod section of the connecting rod, a limiting groove matched with the limiting block is formed in one end face of the fixed seat, the round rod section is sleeved with the fixed seat, the limiting groove is connected to the limiting block in a clamped mode, and a roller hook II is hinged to the fixed seat. The roller hook II and the roller hook I are located in the same vertical plane, the locking block is connected to the