Seal structure and gear box

The utility model discloses a seal structure and gear box, seal structure includes: pivot (10), choker (20), first elastomer (30) and magnetic current body seal assembly (40), alternate pivot (10) inthe hole of choker (20), magnetic current body seal assembly (40) set up in the interior pore wall of choker (20) with between pivot (10), be used for sealing the interior pore wall of choker (20) with clearance between pivot (10), be formed with first recess (21) on the interior pore wall of choker (20), first elastomer (30) set up in in first recess (21), and support magnetic current body seal assembly (40), so that magnetic current body seal assembly (40) extrude in pivot (10). First elastomer is the mounting spur in real time magnetic current body seal assembly to make magnetic current body seal assembly can keep extrudeing in the state of pivot to the leakproofness between pivot and the choker has been improved. 本实用新型公开了种密封结构和齿轮箱，所述密封结构包括：转轴(10)、领圈(20)、第弹性体(30)和磁流体密封组件(40)，所述转轴(10)穿插在所述领圈(20)的内孔中，所述磁流体密封组件(40