Tractor

A tractor, comprising:

• a frame;
• a power wheel;
• and
• a connecting assembly;
• wherein the power wheel is rotatably arranged on a bottom of the frame;
• the connecting assembly is arranged on the frame and is configured to be attached to a goods carrier;
• the power wheel is configured to be rotatable relative to the frame to drive the frame to move, so as to drive the goods carrier to move synchronously through the connecting assembly;
• the connecting assembly is configured to move back and forth along a first direction relative to the frame to adjust a position of the goods carrier relative to the frame along the first direction;
• and the first direction is a travelling direction of the tractor;
• the connecting assembly comprises a ball joint, a bearing seat and a connecting component;
• the bearing seat is arranged on the frame;
• the connecting component is arranged on the bearing seat and is configured to be attached to the goods carrier;
• the connecting component is provided with a first end face and a second end face opposite to each other;
• the connecting component is configured to be reversed 180° up and down relative to the bearing seat to allow the first end face or the second end face of the connecting component to face upward;
• when the first end face of the connecting component faces upward, the ball joint is arranged on the first end face of the connecting component;
• when the second end face of the connecting component faces upward, the ball joint is arranged on the second end face of the connecting component;
• and
• a height of the ball joint while the first end face of the connecting component facing upwards is lower than a height of the ball joint while the second end face of the connecting component facings upwards.