Loose bed jig for ship

The utility model relates to an adjustable-height strong-force movable tyre frame for a ship, which is based on the sectional line type variation of a ship body, the distances of upright posts are arrayed on site, and the height of a single movable upright post is regulated to form an integral movable tyre frame. The utility model is suitable for building the flat section or the curved section of the ship body. The movable tyre frame comprises a platform and a plurality of movable upright posts, wherein the movable upright posts are distributed on the platform, and the bottom of each movable upright post is fixedly arranged on the platform. Compared with a fixed tyre frame, the utility model not only has simple structure and convenient installation, but also can be reused, saves cost, and enhances work efficiency, thereby being a tyre frame device with good performance.