Dynamic load test platform for safety belt of vertical take-off and landing aircraft

Abstract

The invention discloses a vertical take-off and landing aircraft safety belt dynamic load test platform, and relates to the technical field of safety belt load tests.The platform comprises a supporting frame and a testboard fixedly connected to the inner side of the supporting frame, the top of the testboard is fixedly connected with a test model through a bolt assembly, and the top of the test model is provided with a safety belt; one side of the test bench is provided with a traction assist device used for carrying out load test on the safety belt. And the reciprocating folding mechanism is located in the test model, extends to the outside of the test model and is used for dynamically adjusting the position of the safety belt subjected to the load test. According to the invention, a comprehensive dynamic load test is carried out on the safety belt by arranging the reciprocating folding mechanism and the system, the test not only considers the tension performance of the safety belt in a single direction, but also simulates the stress conditions of the safety belt in multiple directions, so that the dynamic load test accuracy of the device on the safety belt is improved.

Description

Technical Field

[0001] The invention relates to the technical field of seat belt load testing, in particular to a vertical take-off and landing aircraft seat belt dynamic load testing platform. Background Art

[0002] The seat belts of vertical take-off and landing aircraft, especially electric vertical take-off and landing aircraft, are key safety equipment and are crucial to ensuring the safety of passengers during the flight. In order to ensure the safety of passengers during the flight, special testing equipment is required to perform dynamic load tests on the seat belts of vertical take-off and landing aircraft before they are put into use, so as to ensure that the seat belts meet the standards.

[0003] The existing vertical take-off and landing aircraft seat belt dynamic load test platform installs a tension sensor at one end of the seat belt after the seat belt is installed on the experimental mold, and then drives the tension sensor through the hydraulic cylinder to pull the seat belt to detect the seat belt load test. However, the existing vertical take-off and landing aircraft has turbulence during flight, which makes the passengers tilt and pull the seat belt during turbulence after fastening the seat belt. However, the existing vertical take-off and landing aircraft seat belt dynamic load test platform cannot perform simulation tests of this situation, thereby reducing the accuracy of the test. For this reason, we provide a vertical take-off and landing aircraft seat belt dynamic load test platform to solve the above problem. Summary of the invention

[0004] The purpose of the present invention is to provide a vertical take-off and landing aircraft seat belt dynamic load test platform in order to solve the problem that the existing seat belt dynamic load test platform cannot perform simulation test on the seat belt tilting and pulling.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dynamic load test platform for seat belts of vertical take-off and landing aircraft, comprising: a support frame and a test bench fixedly connected to the inner side of the support frame, the top of the test bench is fixedly connected to a test model by a bolt assembly, the top of the test model is equipped with a seat belt, and one side of the test bench is provided with a traction assistant for load testing the seat belt; a reciprocating folding mechanism, located inside the test model and extending to the outside of the test model, for dynamically adjusting the position of the seat belt for load testing, the reciprocating folding mechanism comprising a power rod, a suspension seat, a fixed seat, a torsion spring, a rotating shaft, a spur rack, and a spur gear; an auxiliary power device, located inside the test model, for cooperating with the reciprocating folding mechanism to perform different angle adjustments, the auxiliary power device comprising an auxiliary bar, a spherical rod, a connecting seat, a connecting spring and a trapezoidal block.

[0006] As a further solution of the present invention: the traction aid includes guide rails fixedly connected to both sides of the test bench, the outer walls of the two guide rails are slidably connected to a sliding seat, a connecting plate is fixedly connected between the two sliding seats by a bolt assembly, a bracket is fixedly connected to one side of the test bench, a hydraulic cylinder is installed on the inner side of the bracket, the output end of the hydraulic cylinder passes through the bottom of the bracket and is fixedly connected to the connecting plate, a connecting column is fixedly connected to the inner side of the sliding seat, and a tension sensor is installed between the connecting column and the safety belt.

[0007] As a further solution of the present invention: the reciprocating folding mechanism also includes a groove opened on the inner side of the test model, the inner side of the groove is rotatably connected to a first one-way threaded screw, the outer wall of the first one-way threaded screw is threadedly connected to a sliding plate, and the sliding plate matches the groove, a driving motor is installed inside the test model, and the output end of the driving motor is connected to the first one-way threaded screw, connecting blocks are fixedly connected on both sides of the sliding plate, a support block is fixedly connected to the top of the connecting block, an L-shaped plate is arranged above the support block, the safety belt is attached to the inner side of the L-shaped plate, and a limiting component for limiting the safety belt is arranged on the inner side of the L-shaped plate.

[0008] As a further solution of the present invention: the limiting assembly includes a second one-way threaded screw rotatably connected to the inner side of the L-shaped plate, one end of the second one-way threaded screw penetrates through the top of the L-shaped plate and is fixedly connected to a knob, the outer wall of the second one-way threaded screw is threadedly connected to a slider, the inner side of the L-shaped plate is provided with a limiting groove matching the slider, the slider is slidably connected to the inner side of the limiting groove, one end of the slider is fixedly connected to a pressure plate, and the pressure plate is affixed to the top of the safety belt.

[0009] As a further solution of the present invention: the reciprocating folding mechanism also includes the fixed seat fixedly connected to the top of the support block, the bottom of the L-shaped plate is fixedly connected to the suspension seat, the inner side of the suspension seat is fixedly connected to the rotating shaft, and one end of the rotating shaft passes through the inner side of the fixed seat and is rotatably connected to the fixed seat, the torsion spring is installed between the suspension seat and the fixed seat, one end of the rotating shaft extends to the outer wall of the rotating shaft and is fixedly connected to a spur gear, the top of the spur gear is meshed with a spur rack, and one side of the spur rack is fixedly connected to a power rod.

[0010] As a further solution of the present invention: a limiting groove matching the power rod is opened on the inner side of the support block, and the limiting groove runs through from the top of the support block to the bottom of the support block, and the power rod is slidably connected to the inner side of the limiting groove.

[0011] As a further solution of the present invention: the auxiliary power device includes the connecting seat fixedly connected to one side of the connecting block, a spherical rod is slidably connected to the inner side of the connecting seat, a connecting spring is installed between the power rod and the connecting seat, an auxiliary strip is fixedly connected to the inner side of the groove, and a trapezoidal block is fixedly connected to the inner side of the auxiliary strip.

[0012] As a further solution of the present invention: the trapezoidal blocks are arranged in multiple groups, each group of the trapezoidal blocks is arranged with three trapezoidal blocks, and the three trapezoidal blocks are arranged in increasing height from bottom to top.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a reciprocating folding mechanism, when the connecting block moves upward, it drives the power rod to move upward, so that when the spherical rod moves from the lowest point to the highest point of the inclined surface on one side of the trapezoidal block, the spherical rod is pushed to drive the spur rack to move horizontally through the power rod, thereby driving the spur gear to drive the L-shaped plate to rotate through the rotating shaft, so that the L-shaped plate drives the safety belt to tilt. When the spherical rod moves from the highest point to the lowest point of the trapezoidal block, the spherical rod is reset under the action of the connecting spring. This tilting process simulates the performance of the safety belt when it is subjected to lateral force, which is helpful to evaluate its performance under complex stress conditions. The spherical rod is reset under the action of the connecting spring, so that the safety belt can return to a horizontal state. This reset process simulates the recovery ability of the safety belt after being subjected to stress. Through the above test process, the system performs a comprehensive dynamic load test on the safety belt. This test not only considers the tensile performance of the safety belt in a single direction, but also simulates its stress conditions in multiple directions, thereby improving the accuracy of the device in performing dynamic load tests on the safety belt. 2. By setting up the cooperation of parts such as the sliding plate, when the hydraulic cylinder is started for the stage test, the drive motor is started synchronously, and the output end of the drive motor drives the first one-way threaded screw to drive the sliding plate to move upward, thereby pushing the L-shaped plate to drive the seat belt to lift up. The upward movement of the L-shaped plate is actually a lifting or stretching operation on the seat belt. This operation is performed during the interval time of the hydraulic cylinder's intermittent start and stop, which helps to simulate the instantaneous tension that the seat belt may encounter in actual use. Through this lifting operation, the performance of the seat belt when subjected to instantaneous tension can be more comprehensively evaluated, including its tension state, elastic recovery ability, etc. This lifting process not only increases the tension on the seat belt, but also simulates the upward stretching that the seat belt may encounter in actual use, which helps to more accurately evaluate the safety performance and reliability of the seat belt, thereby ensuring its effectiveness in actual use; 3. By setting up the coordination of parts such as trapezoidal blocks, and the interaction between the spherical rod and multiple sets of trapezoidal blocks, the inclination angle of the seat belt is gradually increased. This design simulates the complex stress conditions that the seat belt may encounter in actual use. Through the gradually increasing inclination angle, the test system conducts a comprehensive load test on the seat belt. This test not only considers the tensile performance of the seat belt in a single direction, but also evaluates its stress conditions in multiple directions. This test method helps to discover potential problems of the seat belt during the stress process, such as breakage, slippage or deformation. By evaluating the performance of the seat belt at a gradually increasing inclination angle, its safety and reliability can be judged more accurately; 4. By setting a limit assembly, when the seat belt is placed on the inside of the L-shaped plate, the knob can be rotated, so that the second one-way threaded screw can be used to rotate and drive the pressure plate to fit on the top of the seat belt, so that the U-shape formed by the pressure plate and the L-shaped plate limits the seat belt, avoiding twisting of the seat belt when it is tilted, thereby improving the accuracy of subsequent detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the test bench of the present invention; Figure 3 It is a structural schematic diagram of the traction aid of the present invention; Figure 4 It is a schematic diagram of the inner structure of the test model of the present invention; Figure 5 It is a schematic diagram of the structure of the reciprocating folding mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 It is a schematic diagram of the inner structure of the L-shaped plate of the present invention; Figure 8 It is a schematic diagram of the inner structure of the auxiliary strip of the present invention.

[0015] In the figure: 1. support frame; 2. test bench; 3. guide rail; 4. sliding seat; 5. connecting plate; 6. bracket; 7. hydraulic cylinder; 8. test model; 9. safety belt; 10. connecting column; 11. tension sensor; 12. groove; 13. sliding plate; 14. first one-way threaded screw; 15. support block; 16. power rod; 17. connecting block; 18. auxiliary strip; 19. L-shaped plate; 20. pressure plate; 21. drive motor; 22. suspension seat; 23. fixed seat; 24. torsion spring; 25. rotating shaft; 26. spur rack; 27. spur gear; 28. slider; 29. ​​second one-way threaded screw; 30. knob; 31. spherical rod; 32. connecting seat; 33. connecting spring; 34. trapezoidal block. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0018] See also Figures 1 to 8 , This embodiment provides a dynamic load test platform for seat belts of vertical take-off and landing aircraft, including: a support frame 1 and a test bench 2 fixedly connected to the inner side of the support frame 1, a test model 8 is fixedly connected to the top of the test bench 2 by a bolt assembly, a seat belt 9 is installed on the top of the test model 8, a traction assistant for load testing the seat belt 9 is arranged on one side of the test bench 2, the traction assistant includes a guide rail 3 fixedly connected to both sides of the test bench 2, the outer walls of the two guide rails 3 are slidably connected to a sliding seat 4, a connecting plate 5 is fixedly connected between the two sliding seats 4 by a bolt assembly, a bracket 6 is fixedly connected to one side of the test bench 2, a hydraulic cylinder 7 is installed on the inner side of the bracket 6, the output end of the hydraulic cylinder 7 passes through the bottom of the bracket 6 and is fixedly connected to the connecting plate 5, a connecting column 10 is fixedly connected to the inner side of the sliding seat 4, and a tension sensor 11 is installed between the connecting column 10 and the seat belt 9; The hydraulic cylinder 7 can perform intermittent start and stop under the control of the PLC controller. When the seat belt 9 needs to be load tested, the hydraulic cylinder 7 is started, and the output end of the hydraulic cylinder 7 drives the connecting plate 5 to drive the sliding seat 4 to move downward quickly for a distance and then stop. The interval time of this stop movement can be 5 seconds, which is used to detect the tension state generated by the seat belt 9 when it is pulled instantly. After the hydraulic cylinder 7 starts and stops in the first stage, it can start and stop in the second stage until the seat belt 9 is pulled to the maximum limit, thereby realizing a dynamic load test of the seat belt 9.

[0019] See also Figures 4 to 8 The reciprocating folding mechanism is located inside the test model 8 and extends to the outside of the test model 8, and is used to dynamically adjust the position of the safety belt 9 for load testing. The reciprocating folding mechanism includes a power rod 16, a suspension seat 22, a fixed seat 23, a torsion spring 24, a rotating shaft 25, a spur rack 26, and a spur gear 27; an auxiliary power device is located on the inner side of the test model 8 and is used to cooperate with the reciprocating folding mechanism to adjust different angles. The auxiliary power device includes an auxiliary bar 18, a spherical rod 31, a connecting seat 32, a connecting spring 33 and a trapezoidal block 34. The reciprocating folding mechanism also The test model 8 includes a groove 12 provided inside the test model 8, the inside of the groove 12 is rotatably connected with a first one-way threaded screw 14, the outer wall of the first one-way threaded screw 14 is threadedly connected with a sliding plate 13, and the sliding plate 13 matches the groove 12, a driving motor 21 is installed inside the test model 8, and the output end of the driving motor 21 is connected to the first one-way threaded screw 14, connecting blocks 17 are fixedly connected on both sides of the sliding plate 13, a supporting block 15 is fixedly connected on the top of the connecting block 17, an L-shaped plate 19 is arranged above the supporting block 15, and the safety belt 9 fits On the inner side of the L-shaped plate 19, the reciprocating folding mechanism also includes a fixed seat 23 fixedly connected to the top of the support block 15, the bottom of the L-shaped plate 19 is fixedly connected to a suspension seat 22, the inner side of the suspension seat 22 is fixedly connected to a rotating shaft 25, and one end of the rotating shaft 25 passes through the inner side of the fixed seat 23 and is rotatably connected to the fixed seat 23, a torsion spring 24 is installed between the suspension seat 22 and the fixed seat 23, one end of the rotating shaft 25 extends to the outer wall of the rotating shaft 25 and is fixedly connected to a spur gear 27, the top of the spur gear 27 is meshed with a spur rack 26, and the spur rack 26 is A power rod 16 is fixedly connected to one side, a limiting groove matching the power rod 16 is opened on the inner side of the support block 15, and the limiting groove runs from the top of the support block 15 to the bottom of the support block 15, the power rod 16 is slidably connected to the inner side of the limiting groove, the auxiliary power device includes a connecting seat 32 fixedly connected to one side of the connecting block 17, a spherical rod 31 is slidably connected to the inner side of the connecting seat 32, a connecting spring 33 is installed between the power rod 16 and the connecting seat 32, an auxiliary strip 18 is fixedly connected to the inner side of the groove 12, and a trapezoidal block 34 is fixedly connected to the inner side of the auxiliary strip 18; When the hydraulic cylinder 7 is started to conduct the stage test, the drive motor 21 is started synchronously, and the output end of the drive motor 21 drives the first one-way threaded screw 14 to drive the sliding plate 13 to move upward, thereby pushing the L-shaped plate 19 to drive the safety belt 9 to perform a lifting operation. The upward movement of the L-shaped plate 19 actually performs a lifting or stretching operation on the safety belt 9. This operation is performed during the interval time of the hydraulic cylinder 7 intermittent start and stop, which helps to simulate the instantaneous tension that the safety belt 9 may encounter in actual use. Through this lifting operation, the performance of the safety belt 9 when subjected to instantaneous tension can be more comprehensively evaluated, including its tension state, elastic recovery ability, etc. This lifting process not only increases the tension on the safety belt 9, but also simulates the upward stretching that the safety belt 9 may encounter in actual use, which helps to more accurately evaluate the safety performance and reliability of the safety belt 9, thereby ensuring its effectiveness in actual use; When the connecting block 17 moves upward, it drives the power rod 16 to move upward, so that the spherical rod 31 moves from the lowest point to the highest point of the inclined surface on one side of the trapezoidal block 34, and pushes the spherical rod 31 to drive the spur rack 26 to move horizontally through the power rod 16, thereby driving the spur gear 27 to drive the L-shaped plate 19 to rotate through the rotating shaft 25, so that the L-shaped plate 19 drives the safety belt 9 to tilt. When the spherical rod 31 moves from the highest point to the lowest point of the trapezoidal block 34, the spherical rod 31 is reset under the action of the connecting spring 33, so that the safety belt 9 can be reset to a horizontal state. This tilting process simulates the performance of the safety belt when subjected to lateral force, which helps to evaluate its performance under complex stress conditions. The spherical rod 31 is reset under the action of the connecting spring 33, so that the safety belt 9 can return to a horizontal state. This reset process simulates the recovery ability of the safety belt after being stressed. Through the above test process, the system performs a comprehensive dynamic load test on the safety belt 9. This test not only takes into account the tension performance of the safety belt in a single direction, but also simulates its stress conditions in multiple directions, thereby improving the accuracy of the device's dynamic load test on the safety belt 9.

[0020] This comprehensive testing method helps to more accurately evaluate the safety and reliability of seat belts in actual use. It can not only find potential problems of seat belts under instantaneous tension, but also evaluate their durability and performance stability in long-term use.

[0021] Please refer to 7. A limiting assembly for limiting the safety belt 9 is arranged on the inner side of the L-shaped plate 19. The limiting assembly includes a second one-way threaded screw 29 rotatably connected to the inner side of the L-shaped plate 19. One end of the second one-way threaded screw 29 penetrates to the upper side of the L-shaped plate 19 and is fixedly connected to a knob 30. A slider 28 is threadedly connected to the outer wall of the second one-way threaded screw 29. A limiting slide groove matching the slider 28 is provided on the inner side of the L-shaped plate 19. The slider 28 is slidably connected to the inner side of the limiting slide groove. One end of the slider 28 is fixedly connected to a pressure plate 20, and the pressure plate 20 fits on the top of the safety belt 9. When the safety belt 9 is placed inside the L-shaped plate 19, the knob 30 can be rotated to drive the pressure plate 20 to fit on the top of the safety belt 9 through the second one-way threaded screw 29, so that the U-shape formed by the pressure plate 20 and the L-shaped plate 19 limits the safety belt 9 and avoids twisting when the safety belt 9 is tilted, thereby improving the accuracy of subsequent detection.

[0022] See also Figure 8 There are multiple groups of trapezoidal blocks 34, each group of trapezoidal blocks 34 has three trapezoidal blocks, and the three trapezoidal blocks 34 are arranged in increasing heights from bottom to top; The interaction between the spherical rod 31 and the multiple groups of trapezoidal blocks 34 causes the inclination angle of the safety belt 9 to gradually increase. This design simulates the complex stress conditions that the safety belt 9 may encounter in actual use. By gradually increasing the inclination angle, the test system performs a comprehensive load test on the safety belt 9. This test not only considers the tension performance of the safety belt 9 in a single direction, but also evaluates its stress conditions in multiple directions. This test method helps to discover potential problems of the safety belt 9 during the stress process, such as breakage, slippage or deformation. By evaluating the performance of the safety belt at a gradually increasing inclination angle, its safety and reliability can be judged more accurately.

[0023] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dynamic load test platform for vertical take-off and landing aircraft seat belts, characterized in that: include: A support frame (1) and a test bench (2) fixedly connected to the inner side of the support frame (1), a test model (8) being fixedly connected to the top of the test bench (2) via a bolt assembly, a safety belt (9) being installed on the top of the test model (8), and a traction auxiliary device for performing a load test on the safety belt (9) being provided on one side of the test bench (2); A reciprocating folding mechanism, located inside the test model (8) and extending to the outside of the test model (8), for dynamically adjusting the position of the safety belt (9) under load testing, the reciprocating folding mechanism comprising a power rod (16), a suspension seat (22), a fixing seat (23), a torsion spring (24), a rotating shaft (25), a spur rack (26), and a spur gear (27); An auxiliary power device is located inside the test model (8) and is used to cooperate with the reciprocating folding mechanism to adjust different angles. The auxiliary power device comprises an auxiliary bar (18), a spherical rod (31), a connecting seat (32), a connecting spring (33) and a trapezoidal block (34).

2. The vertical take-off and landing aircraft safety belt dynamic load test platform according to claim 1, characterized in that: The traction assist device comprises guide rails (3) fixedly connected to both sides of the test bench (2), the outer walls of the two guide rails (3) are slidably connected to a sliding seat (4), a connecting plate (5) is fixedly connected between the two sliding seats (4) via a bolt assembly, a bracket (6) is fixedly connected to one side of the test bench (2), a hydraulic cylinder (7) is installed on the inner side of the bracket (6), an output end of the hydraulic cylinder (7) passes through the bottom of the bracket (6) and is fixedly connected to the connecting plate (5), a connecting column (10) is fixedly connected to the inner side of the sliding seat (4), and a tension sensor (11) is installed between the connecting column (10) and the safety belt (9).

3. The vertical take-off and landing aircraft safety belt dynamic load test platform according to claim 1, characterized in that: The reciprocating folding mechanism further comprises a groove (12) provided on the inner side of the test model (8), a first one-way threaded screw (14) being rotatably connected to the inner side of the groove (12), a sliding plate (13) being threadably connected to the outer wall of the first one-way threaded screw (14), and the sliding plate (13) matching the groove (12), a driving motor (21) being installed inside the test model (8), and an output end of the driving motor (21) being connected to the first one-way threaded screw (14), connecting blocks (17) being fixedly connected to the two sides of the sliding plate (13), a supporting block (15) being fixedly connected to the top of the connecting block (17), an L-shaped plate (19) being arranged above the supporting block (15), the safety belt (9) being attached to the inner side of the L-shaped plate (19), and a limiting component for limiting the position of the safety belt (9) being arranged on the inner side of the L-shaped plate (19).

4. The vertical take-off and landing aircraft safety belt dynamic load test platform according to claim 3, characterized in that: The limiting assembly comprises a second one-way threaded screw (29) rotatably connected to the inner side of the L-shaped plate (19); one end of the second one-way threaded screw (29) passes through the upper side of the L-shaped plate (19) and is fixedly connected to a knob (30); the outer wall of the second one-way threaded screw (29) is threadedly connected to a slider (28); a limiting groove matching the slider (28) is provided on the inner side of the L-shaped plate (19); the slider (28) is slidably connected to the inner side of the limiting groove; one end of the slider (28) is fixedly connected to a pressure plate (20), and the pressure plate (20) is fitted on the top of the safety belt (9).

5. The vertical take-off and landing aircraft safety belt dynamic load test platform according to claim 3, characterized in that: The reciprocating folding mechanism further comprises the fixed seat (23) fixedly connected to the top of the support block (15); the bottom of the L-shaped plate (19) is fixedly connected to the suspension seat (22); the inner side of the suspension seat (22) is fixedly connected to the rotating shaft (25); one end of the rotating shaft (25) passes through the inner side of the fixed seat (23) and is rotatably connected to the fixed seat (23); the torsion spring (24) is installed between the suspension seat (22) and the fixed seat (23); one end of the rotating shaft (25) extends to the outer wall of the rotating shaft (25) and is fixedly connected to a spur gear (27); the top of the spur gear (27) is meshed with a spur rack (26); one side of the spur rack (26) is fixedly connected to a power rod (16).

6. The vertical take-off and landing aircraft safety belt dynamic load test platform according to claim 5, characterized in that: A limiting groove matching the power rod (16) is provided on the inner side of the support block (15), and the limiting groove runs from the top of the support block (15) to the bottom of the support block (15), and the power rod (16) is slidably connected to the inner side of the limiting groove.

7. The vertical take-off and landing aircraft safety belt dynamic load test platform according to claim 3, characterized in that: The auxiliary power device comprises a connecting seat (32) fixedly connected to one side of the connecting block (17); a spherical rod (31) is slidably connected to the inner side of the connecting seat (32); a connecting spring (33) is installed between the power rod (16) and the connecting seat (32); an auxiliary bar (18) is fixedly connected to the inner side of the groove (12); and a trapezoidal block (34) is fixedly connected to the inner side of the auxiliary bar (18).

8. The vertical take-off and landing aircraft safety belt dynamic load test platform according to claim 7, characterized in that: The trapezoidal blocks (34) are arranged in a plurality of groups, each group of the trapezoidal blocks (34) being arranged in three groups, and the three trapezoidal blocks (34) are arranged in increasing heights from bottom to top.

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