Trench wall cutting device and method for cutting a cutting trench in the ground

A trench wall cutting device, comprising

• a trench cutter comprising at least one cutting frame unit and at least two cutting wheels arranged in the longitudinal direction of the cutting frame unit, the trench cutter being configured for cutting a vertical cutting trench in the ground,
• a supporting structure for suspending the trench cutter in a cutting position and configured to move the trench cutter vertical cutting direction to create the cutting trench, and
• a feed device for feeding the trench cutter in a feeding direction which is oriented transversely to the cutting direction,
• wherein
• the feed device is configured for feeding the at least one cutting frame unit with the two cutting wheels in a transversely oriented feed position, wherein the longitudinal direction of the cutting frame unit is oriented in parallel to the feeding direction,
• the trench wall cutting device further comprises a pivoting device configured to pivot the cutting frame unit with the cutting wheels 90 degrees from the transversely-oriented feed position into the vertical cutting position,
• a plurality of cutting frame units are provided for forming the trench cutter, wherein the cutting wheels are mounted on a cutting frame unit and, in addition, at least one further cutting frame unit is detachably attached thereto, and
• the cutting frame units are connected to the respective adjacent cutting frame unit via at least one pivot joint.