Systems and methods for lowering a cart in a modular grow tower

A method for lowering a cart in a modular grow tower assembly, the method comprising:

• providing a modular grow tower assembly including a plurality of body frames and a plurality of lift frames, where each body frame includes multiple subframe supports arranged in parallel in a vertical direction;
• configuring a plurality of carts to traverse the subframe supports, each cart having a first end with at least one male engagement mechanism and a second end with at least one female engagement mechanism;
• and
• utilizing a plurality of lowering lift mechanisms within the lift frames to pull carts from the subframe supports of the body frames, lower the carts, and push the carts onto lower subframe supports.

A lowering lift mechanism for lowering a cart in a modular grow tower assembly, the lowering lift mechanism comprising:

• a receiving plate for engaging with the cart, including first and second arms located at opposite ends of the receiving plate;
• first and second receiving blocks located on the first and second arms, respectively, each receiving block including notches configured to engage male and female engagement mechanisms on the cart;
• an actuator configured to move the receiving plate between an extended position, where the first and second arms extend into subframe supports to engage the cart, and a retracted position, where the plate is within the lift frame;
• and
• a lifting mechanism configured to raise the cart above a bumper on the subframe support before pulling the cart into the lift frame and lowering the cart to align with a lower subframe support, then extending the receiving plate to push the cart onto the new subframe support.