Training apparatus

A training apparatus comprising:

• a top structure;
• a bottom structure;
• and a traction structure disposed between the top structure and the bottom structure, wherein the traction structure is configured to be retractable along an axial direction of the top structure or the bottom structure to achieve relative movement between the top structure and the bottom structure;
• the traction structure further comprises:
• a plurality of traction sub-structures, each of the plurality of traction sub-structures configured to be independently retractable along the axial direction and each traction sub-structure comprising an inflatable stacked structure, each of the inflatable stacked structures is stacked along a direction extending from the bottom structure to the top structure,
• and the inflatable stacked structure is configured to be a flat shape in an uninflated state and a stretched shape in an inflated state to achieve the relative movement between the top structure and the bottom structure by inflation and deflation;
• wherein each of the inflatable stacked structures further comprises:
• a top rubber tube, a bottom rubber tube, and a plurality of rubber tubes between the top rubber tube and the bottom rubber tube, wherein the top rubber tube and the bottom rubber tube each respectively have one opening, and the plurality of rubber tubes between the top rubber tube and the bottom rubber tube each have an upper opening and a lower opening, and adjacent rubber tubes communicate through adjacent openings;
• the training apparatus further comprising:
• a top bracket disposed between the top structure and the traction structure, a bottom bracket disposed between the bottom structure and the traction structure, wherein each of the top bracket and the bottom bracket comprise an annular structure, and the plurality of traction sub-structures are disposed on the bottom bracket to be connected to the top bracket, and the plurality of traction sub-structures are sequentially spaced along the annular structure;
• wherein each of the top rubber tube and the bottom rubber tube is provided with two stuck slots located on either side of the opening and extending along a direction of the opening;
• a side of the top bracket closer to the top rubber tube is provided with a first stuck slot that is matched with the two stuck slots of the top rubber tube:
• a side of the bottom bracket closer to the bottom rubber tube is provided with a second stuck slot that is matched with the two stuck slots of the bottom rubber tube;
• a side of the top bracket away from the top rubber tube is provided with a first groove configured to receive the top structure;
• and a side of the bottom bracket away from the bottom rubber tube is provided with a second groove configured to receive the bottom structure.