Vertical gearbox testing device and leakproof assembly thereof

The utility model discloses a vertical gearbox testing device and a leakproof assembly thereof. The anti-leakage assembly comprises a first component and a second component rotating relative to the first component in a fixed-axis mode. One of the circumferential inner edge and the circumferential outer edge of the first component is a static closed end, and the other one is a static suspension end; one of the circumferential inner edge and the circumferential outer edge of the second component is a movable closed end, and the other one is a movable suspension end; the static suspension end and the dynamic suspension end are adjacent to each other to form a roundabout gas path gap; an air guide plate fixedly connected with the movable suspension end is arranged in the air path gap; the air driving direction of the air deflector is opposite to the leakage direction of substances between the first component and the second component. The anti-leakage assembly utilizes the roundabout air path gap and the air guide