Connecting device for open caisson

The utility model provides a connecting device for an open caisson, and relates to the field of open caisson structures. The device comprises a first connector connecting device and a second connector connecting device, the first connector connecting device comprises first H-shaped connecting steel and a first jack set, the first jack set is used for being arranged in a first mounting part of a first open caisson, and the first H-shaped connecting steel makes contact with the ejection end of the first jack set; the second connector connecting device comprises second H-shaped connecting steel and a second jack set, the second jack set is used for being arranged in a second mounting part of a second open caisson, the first open caisson and the second open caisson are adjacent open caissons, the second H-shaped connecting steel makes contact with the ejection end of the second jack set, and the second H-shaped connecting steel makes contact with the ejection end of the second jack set. A closed connecting cavity