Magnetic rod counterweight device

The utility model relates to a magnetic bar counterweight device, which comprises a plurality of magnetic bars, each magnetic bar comprises a stator shell, a fixed magnet, a bearing and a slide bar are arranged in the stator shell inwards in sequence, the fixed magnet is arranged on the inner wall of the stator shell, the bearing is arranged on the inner wall of the fixed magnet, and the slide bar is arranged on the inner wall of the bearing. The sliding rod is installed on the inner wall of the bearing and can slide up and down along the bearing, and one end of the sliding rod extends out of the stator shell and is used for being connected with a measuring assembly. A movable magnet is further installed in the sliding rod, and the fixed magnet and the movable magnet attract each other through magnetic force to form pulling force. The magnetic bar counterweight device is small in required structural space and very convenient to install and maintain. The balance weight force and the load force are constant, so