Carrying module and auxiliary tool using same

A carrying module that is detachably installed on a host module, the carrying module comprising:

• two attachment bases, installed on the host module;
• two guardrails, rotatably connected and locked to the attachment bases through a first coupling device respectively;
• two load-bearing plates, rotatably installed at the bottom of the guardrails through a second coupling device respectively, wherein when the load-bearing plates are lifted upward, the load-bearing plate closely aligns with the guardrails, and when the load-bearing plates are placed horizontally, the load-bearing plates are used to carry a load;
• the second coupling device comprises a rotating shaft rod and a pivot groove, the rotating shaft rod is installed at the bottom of the guardrail and is equipped with a plurality of limit pins;
• the pivot groove, that is disposed on one side of the load-bearing plate for receiving the rotating shaft rod, comprises a plurality of long holes used to accommodate the limit pins so that the load-bearing plates are positioned horizontally for carrying loads and lifted upward to approach or move away from the guardrail;
• and
• a backrest assembly, connected and locked to the two guardrails through a third coupling device, the backrest assembly comprises a seatback base and a seatback, wherein the seatback base is connected to at least one of the two guardrails through the third coupling device, the seatback is detachably coupled to the seatback base, wherein the third coupling device comprises at least one pivot-mounted locking device installed on the coupling end of the seatback base and the guardrails so that the seatback base may rotate horizontally around the guardrails.