Unload tube lock for agricultural vehicle

A combine harvester comprising:

• a frame member;
• an unload tube that expels clean grain from a clean grain tank of the combine harvester, the unload tube being moveable relative to the clean grain tank and the frame member between a stowed position and a deployed position;
• a pivotable cradle member being pivotably mounted to the frame member that releasably receives the unload tube, wherein the pivotable cradle member comprises a surface shaped bearing on an exterior surface of the unload tube, wherein the pivotable cradle member is pivotable between a first rotational position when the unload tube is maintained in the stowed position and a second rotational position when the unload tube is maintained in the deployed position;
• a locking device that locks together the unload tube, the frame member, and the pivotable cradle member when the unload tube is maintained in the stowed position;
• a stationary cradle member either fixedly connected to or forms part of the frame member, wherein the pivotable cradle member is pivotably mounted to the stationary cradle member;
• and
• at least one hole;
• wherein the locking device comprises a pin, and in a locked position of the pin, the pin passes through the at least one hole enabling locking of the unload tube to the pivotable cradle member, the stationary cradle member, and the frame member.