Device for cleaning outer surface of steel casing in cofferdam

The invention discloses a cofferdam inner steel casing outer surface cleaning device, and relates to the technical field of cofferdam construction, the cofferdam inner steel casing outer surface cleaning device comprises a driving outer ring and a driven inner ring which are concentrically arranged, the driven inner ring comprises an inner connecting ring, and the inner wall of the inner connecting ring is provided with a plurality of cleaning heads; the driving outer ring comprises a hanging ring, and a rotating ring is concentrically and rotatably arranged in the hanging ring; a plurality of fan blades are arranged on the inner wall of the rotating ring, and when the rotating ring ascends and descends in water along with the hanging ring, the rotating ring and the inner connecting ring can be pushed to rotate synchronously under the thrust action of water flow on the fan blades. 本发明公开了一种围堰内钢护筒外表面清理装置，涉及围堰施工技术领域，其包括同心设置的主动外圈和从动内圈，从动内圈包括内连接圈，且内连接圈的内壁设置有若干清理头；主动外圈包括吊圈，该吊圈内同心且可转动地设置有转动圈；转动圈的内壁设置有若干扇叶，当转动圈随吊圈在水中