Automatic compensation, balancing and tensioning conveying chain

A conveying apparatus, comprising a driving station, a conveying chain, a sliding bracket, a telescopic guide rail, sliding trolleys, trolley sliding rails, counterweight tensioning components and guide rail alarming limiting switches, wherein the driving station provides a driving force;

• the conveying chain is arranged in the telescopic guide rail;
• the sliding bracket is arranged on the conveying chain;
• the sliding bracket is used to support a to-be-conveyed object;
• the driving station drives the conveying chain to move towards a conveying direction;
• the conveying chain drives the sliding bracket and the to-be-conveyed object on the sliding bracket to move towards the conveying direction;
• two sliding trolleys and two trolley sliding rails are comprised;
• one sliding trolley corresponds to one trolley sliding rail;
• the sliding trolleys may slide on the corresponding trolley sliding rails;
• the telescopic guide rail is arranged horizontally;
• the telescopic guide rail comprises two U-shaped bent rails, fixed sleeve rails and middle connection rails;
• the two U-shaped bent rails are respectively fixed on the two sliding trolleys;
• the movements of the U-shaped bent rails may drive the sliding trolleys to slide along the trolley sliding rails;
• the trolley sliding rails are parallel to the fixed sleeve rails and the middle connection rails;
• the middle connection rails are laid between the driving station and one end of the U-shaped bent rail at a near end of the driving station, between the other end of the U-shaped bent rail at the near end of the driving station and one end of the U-shaped bent rail at a far end of the driving station, and at the other end of the U-shaped bent rail at the far end of the driving station;
• furthermore, two ends of each U-shaped bent rail are respectively inserted into one end of each of two fixed sleeve rails, and the middle connection rails are inserted into the other ends of the fixed sleeve rails;
• the fixed sleeve rails connect the middle connection rails with the two U-shaped bent rails into a continuous rail;
• the middle connection rails and the U-shaped bent rails may slide in the fixed sleeve rails under the action of an external force;
• two counterweight tensioning components are comprised, which are respectively fixed at the U-shaped bottoms of the two U-shaped bent rails;
• the counterweight tensioning components always provide an outward pulling force to the U-shaped bent rails;
• when the telescopic guide rail and the conveying chain are pressed to be sunken by the to-be-conveyed object, and the counterweight tensioning components provide the outward pulling force to pull the U-shaped bent rails to the outside, so that the telescopic guide rail and the conveying chain are tensioned;
• after the to-be-conveyed object leaves the telescopic guide rail, the telescopic guide rail and the conveying chain are recovered to be horizontal;
• the conveying chain pulls the U-shaped bent rails to the inside and drives the counterweight tensioning components to be reset to original positions;
• two guide rail alarming limiting switches are comprised, which are respectively located on the two trolley sliding rails;
• the guide rail alarming limiting switches constrain an extreme position where the telescopic guide rail may move;
• the counterweight tensioning components pull the U-shaped bent rails to move and drive the sliding trolleys to slide along the trolley sliding rails;
• the sliding trolleys trigger the guide rail alarming limiting switches, and the driving station stops working, so that the entire conveying apparatus is stopped.