Inflatable air film structure based on pneumatic power rotation

Abstract

An inflatable air film structure based on pneumatic power rotation uses tangential reaction moment from air injection to drive an inflatable rotating air film member and a rotating component fixed to the inflatable rotating air film member to rotate continuously. This simplifies the overall structure, reduces weight, cost and energy consumption, eliminates potential electrical safety hazards, and broadens application scenarios. A rotating assembly not only supports rotating motion but also fluidly connects a main structure body and an internal chamber of the inflatable rotating air film member, maintains system air tightness, ensures stable inflation and effective airflow power transmission. The specific deflection angle setting of the exhaust direction of air mold air holes ensures effective rotational driving torque, and the consistency of the directions ensures rotation smoothness.

What is claimed is: 
     
         1 . An inflatable air film structure based on pneumatic power rotation, comprising:
 an inflatable main structure body ( 1 ), the inflatable main structure body ( 1 ) being enclosed by a flexible and airtight first fabric, a first accommodating cavity being formed inside the inflatable main structure body ( 1 ), and an air intake structure for communicating with an external blower ( 7 ) being arranged on a wall surface of the inflatable main structure body ( 1 );   an inflatable rotating air film member ( 3 ), the inflatable rotating air film member ( 3 ) being enclosed by a flexible and airtight second fabric, a second accommodating cavity being formed inside the inflatable rotating air film member ( 3 ), and a wall surface of the inflatable rotating air film member ( 3 ) being disposed with at least one air mold air hole ( 2 ) as a source of exhaust thrust;   an exhaust direction of the air mold air hole ( 2 ) being set to have a deflection angle with a radial plane passing through a central rotation axis, and ensuring that airflow discharged from the air mold air valve ( 2 ) can generate an effective rotational driving torque; and a plurality of air mold air holes ( 2 ) being disposed on the inflatable rotating air film member ( 3 ), and the exhaust direction of all the air mold air holes ( 2 ) being uniform; and   a rotating assembly, the rotating assembly being mechanically connected between the inflatable main structure body ( 1 ) and the inflatable rotating air film member ( 3 ) and fluidly communicating the first accommodating cavity and the second accommodating cavity, the rotating assembly being used to support the inflatable rotating air film member ( 3 ) to rotate relative to the inflatable main structure body ( 1 ), and the rotating assembly comprising:   a fixing component, the fixing component being fixedly mounted to a wall surface of the inflatable main structure body ( 1 ) and configuring a first airflow passage through which an airflow is drawn out from the first accommodating cavity;   a rotating component, the rotating component being fixedly mounted to a wall surface of the inflatable rotating air film member ( 3 ) and configuring a second airflow passage for introducing airflow into the second accommodating cavity; and   a rotary connection mechanism, the rotary connection mechanism being used for enabling the rotating component to rotate around a preset central rotating axis relative to the fixing component;   pressurized airflow supplied by the blower ( 7 ) entering the first accommodating cavity through the air inlet structure, part of the pressurized airflow sequentially flowing through the first airflow passage and the second airflow passage to enter the second accommodating cavity to inflate and form the inflatable rotating air film member ( 3 ), and finally the part of the airflow being ejected from the air mold air holes ( 2 ) at high speed; and the tangential reaction torque generated when the airflow is ejected being utilized to drive the inflatable rotating air film member ( 3 ) and the rotating component fixed to the inflatable rotating air film member ( 3 ) to continuously rotate around the central rotating axis.   
     
     
         2 . The inflatable air film structure based on pneumatic power rotation according to  claim 1 , wherein the fixing component is a first inner shell ( 6 ) of a hollow structure, and the rotating component is a first outer shell ( 4 ) of a hollow structure; the first inner shell ( 6 ) and the first outer shell ( 4 ) are coaxially nested with each other, and axes of the two coincide with the central rotational axis. 
     
     
         3 . The inflatable air film structure based on pneumatic power rotation according to  claim 2 , wherein the rotary connection mechanism is a first shaft ( 5 ), the first shaft ( 5 ) is arranged along the central rotation axis, one end of the first shaft ( 5 ) is connected to a central portion of the first inner shell ( 6 ), and the other end of the first shaft ( 5 ) is connected to a central portion of the first outer shell ( 4 ), constraining the first inner shell ( 6 ) and the first outer shell ( 4 ) coaxially together, and allowing the first outer shell ( 4 ) to freely rotate around the first inner shell ( 6 ). 
     
     
         4 . The inflatable air film structure based on pneumatic power rotation according to  claim 3 , wherein the first shaft ( 5 ) is detachably and axially fixedly connected to the first inner shell ( 6 ) and the first outer shell ( 4 ) through screws ( 8 ). 
     
     
         5 . The inflatable air film structure based on pneumatic power rotation according to  claim 2 , wherein a first mounting hole is disposed on a wall surface of the inflatable main structure body ( 1 ) at a position corresponding to the first inner shell ( 6 ); and an annular first mounting structure is arranged on an outer peripheral wall of the first inner shell ( 6 ), and an edge region of the first mounting hole is tightly fixed to the first mounting structure, forming an airtight connection between the first inner shell ( 6 ) and the inflatable main structure body ( 1 ). 
     
     
         6 . The inflatable air film structure based on pneumatic power rotation according to  claim 5 , wherein the first mounting structure is an annular first fastening groove; and the inflatable main structure body ( 1 ) is sleeved in the first fastening groove at the edge region of the first mounting hole, and is surrounded by a fastening member ( 12 ) and fixed in the first fastening groove by applying radial pressure. 
     
     
         7 . The inflatable air film structure based on pneumatic power rotation according to  claim 2 , wherein a second mounting hole is disposed on the wall surface of the inflatable rotating air film member ( 3 ) at a position corresponding to the first outer shell ( 4 ); and an outer peripheral wall of the first outer shell ( 4 ) is arranged with an annular second mounting structure, and an edge region of the second mounting hole is tightly fixed to the second mounting structure, forming an airtight connection between the first outer shell ( 4 ) and the inflatable rotating air film member ( 3 ). 
     
     
         8 . The inflatable air film structure based on pneumatic power rotation according to  claim 7 , wherein the second mounting structure is an annular second fastening groove; and the inflatable rotating air film member ( 3 ) is sleeved in the second fastening groove at the edge region of the second mounting hole, and is surrounded by the fastening member ( 12 ) and fixed in the second fastening groove by applying radial pressure. 
     
     
         9 . The inflatable air film structure based on pneumatic power rotation according to  claim 1 , wherein the fixing component is a second inner shell ( 10 ) of a hollow structure, and the rotating component is a second outer shell ( 9 ) of a hollow structure; the second inner shell ( 10 ) and the second outer shell ( 9 ) are coaxially nested with each other, and axes of the two coincide with the central rotational axis; and the rotary connection mechanism is a second shaft ( 11 ), the second shaft ( 11 ) is arranged along the central rotational axis, one end of the second shaft ( 11 ) is connected to a central portion of the second inner shell ( 10 ), and the other end of the second shaft ( 11 ) is connected to a central portion of the second outer shell ( 9 ), constraining the second inner shell ( 10 ) and the second outer shell ( 9 ) together coaxially, and allowing the second outer shell ( 9 ) to freely rotate around the second inner shell ( 10 ). 
     
     
         10 . The inflatable air film structure based on pneumatic power rotation according to  claim 1 , wherein the fixing component is a third inner shell ( 19 ) of a hollow structure, the rotating component is a third outer shell ( 17 ) of a hollow structure, and an outer side of the third outer shell ( 19 ) is arranged with a protective shell ( 14 ); the third inner shell ( 19 ), the third outer shell ( 17 ) and the protective shell ( 14 ) are coaxially nested with each other, and axes of the three coincide with the central rotational axis; and the rotary connection mechanism is a third shaft ( 18 ), the third axis ( 18 ) is arranged along the central rotational axis, one end of the third shaft ( 18 ) is connected to a central portion of the third inner shell ( 19 ), and the other end of the third shaft ( 18 ) is connected to a central portion of the third outer shell ( 17 ), constraining the third inner shell ( 19 ) and the third outer shell ( 17 ) together coaxially, and allowing the third outer shell ( 17 ) to freely rotate around the third inner shell ( 19 ).