Unmanned aerial vehicle (UAV) test bench

1. An UAV (unmanned aerial vehicle) test bench comprising:

a support component ( 1 );

a universal rotating component ( 2 ), which is sliding on the support component ( 1 ) along a Z direction, and a first end of the universal rotating component ( 2 ) can rotate in a universal manner relative to a second end of the universal rotating component ( 2 );

a fixing component ( 3 ), which is connected to the first end of the universal rotating component ( 2 ), and the fixing component ( 3 ) is configured to fix the UAV;

a return component ( 4 ), wherein a first end of the return component is connected to the support component ( 1 ), and a second end of the return component is connected to the second end of the universal rotating component ( 2 ); wherein the return component ( 4 ) is configured to drive the universal rotating component ( 2 ) and the fixing component ( 3 ) to reset; and

wherein the support component ( 1 ) comprises a support frame ( 11 ), a first support plate ( 12 ), a second support plate ( 13 ) and a plurality of support columns ( 14 ), the first support plate ( 12 ) is fixedly connected to a first end of the support frame ( 11 ), and the second support plate ( 13 ) is connected with the first support plate ( 12 ) through the plurality of support columns( 14 ), the first support plate ( 12 ) has a first through hole;

wherein the universal rotating component ( 2 ) is configured to slide through the first through hole;

wherein the first end of the return component ( 4 ) is connected to the first support plate ( 12 ), and the second support plate ( 13 ) is configured to support the fixing component ( 3 ).

2. The UAV test bench according to claim 1 , which is characterized in that the universal rotating component ( 2 ) comprises a universal joint ( 21 ), a limit sleeve ( 22 ) and a fixed shaft ( 23 ), the universal joint ( 21 ) comprises a first end of the universal joint ( 211 ) and a second end of the universal joint ( 212 ) capable of universal rotation relative to the first end of the universal joint ( 211 ), and the limit sleeve ( 22 ) is sleeved outside the universal joint ( 21 ) and fixedly connected to the first end of the universal joint ( 211 ), the fixing component ( 3 ) is connected to the second end ( 212 ) of the universal joint ( 21 ), a first end of the fixed shaft ( 23 ) is connected to the first end ( 211 ) of the universal joint ( 21 ), and a second end of the fixed shaft ( 23 ) is connected to the return component ( 4 ).

3. The UAV test bench according to claim 2 , which is characterized in that it further includes a bearing seat ( 5 ), a bearing ( 6 ) and a connecting shaft ( 7 ), the bearing ( 6 ) is installed in a shaft hole of the bearing seat ( 5 ), wherein a first end of the connecting shaft ( 7 ) is rotatably connected to the bearing seat ( 5 ) and in contact with an inner surface of the bearing ( 6 ), a second end of the connecting shaft ( 7 ) is fixedly connected to the second end of the fixed shaft ( 23 ), and the second end of the return component ( 4 ) is connected to the bearing seat ( 5 ).

4. The UAV test bench according to claim 3 , which is characterized in that it further includes a first lifting ring ( 8 ) fixed on the bearing seat ( 5 ) and a second lifting ring ( 9 ) fixed on the support component ( 1 ), the return component ( 4 ) includes a spring, wherein a first end of the spring is hooked on the second lifting ring ( 9 ), and wherein a second end of the spring is hooked on the first lifting ring ( 8 ).

5. The UAV test bench according to claim 2 , which is characterized in that the UAV test bench further includes a linear bearing fixing seat ( 10 ) fixed on the first support plate ( 12 ) and a linear bearing ( 20 ) installed in the linear bearing fixing seat ( 10 ), and the fixing shaft ( 23 ) is threaded in the linear bearing ( 20 ).

6. The UAV test bench according to claim 5 , which is characterized in that it further includes a limit ring ( 30 ) fixed in the middle of the fixing shaft ( 23 ), the size of the limit ring ( 30 ) in the horizontal direction is larger than the inner diameter of the linear bearing ( 20 ), and when the fixing shaft ( 23 ) slides to a first limit along the Z direction, the limit ring ( 30 ) is butted with the linear bearing ( 20 ) or the linear bearing fixing seat ( 10 ).

7. The UAV test bench according to claim 1 , which is characterized in that it further includes a roller ( 40 ) and a trailer jack ( 50 ) fixed on the roller ( 40 ), and the output end of the trailer jack ( 50 ) is connected to a second end of the support frame ( 11 ).

8. The UAV test bench according to claim 1 , which is characterized in that the fixing component ( 3 ) comprises a connecting seat ( 31 ), a fixing plate ( 32 ) and two clamping parts ( 33 ), the connecting seat ( 31 ) is fixedly connected to the universal rotating component ( 2 ) and is slidably connected to the support component ( 1 ), the fixing plate ( 32 ) is fixedly connected to the connecting seat ( 31 ), and the two clamping parts ( 33 ) are each provided in two assemblies, and one of the two clamping parts ( 33 ) are fixedly connected to each end of the fixing plate ( 32 ), respectively.

9. The UAV test bench according to claim 8 , which is characterized in that each of the two clamping parts ( 33 ) comprises an interconnected first clamping plate ( 331 ) and a second clamping plate ( 332 ), a top surface of the first clamping plate ( 331 ) is provided with a first arc groove, a bottom surface of the second clamping plate ( 332 ) is provided with a second arc groove, and the first arc groove and the second arc groove form an airfoil hole ( 330 ).