Mechanical sensor with multidirectional load function

Abstract

The application provides a mechanical sensor with multidirectional load function, comprising a fixed block, a tension detection mechanism, a supporting mechanism, a constraint detection mechanism and a traction component, wherein the fixed block is connected with the connecting frame one on one side, the connecting frame one is hinged with the tension sensor through the bolt one at the end away from the fixed block, the other end of the tension sensor is hinged with the connecting frame two through the bolt two, and the end of the connecting frame two is integrally formed with the pull ring, the combination structure of the fixed block, the tension detection mechanism, the supporting mechanism, the constraint detection mechanism and the traction component realizes flexible switching of three test states, the locking or unlocking structure of the constraint detection component respectively meets the horizontal tension and the multi-angle tension test in the transverse detection state, the clamping component and the pull ring are docked to form a hoisting structure in the vertical detection state, the constraint detection component is switched to the vertical force measurement mode, and the tension test demand of different directions of the unmanned aerial vehicle is adapted, and the equipment versatility is improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical sensor technology, and more specifically to a mechanical sensor with multi-directional load function. Background Technology

[0002] A multi-directional load-bearing mechanical sensor is a core measurement device capable of accurately capturing and quantifying force signals in different directions. It is widely used in aerospace, drone development, industrial automation, and robotics. In drone testing scenarios, it must meet multi-dimensional testing requirements, including lateral horizontal tension, lateral multi-angle tension, and vertical tension. This provides crucial data support for drone dynamic performance evaluation, structural strength verification, and load capacity optimization. It is an important tool for ensuring the reliability and safety of drone products, and its measurement accuracy, functional versatility, and scenario adaptability directly affect the scientific validity and application value of the test results.

[0003] Existing multi-directional load-bearing mechanical sensors typically consist of a sensing body, a fixed base, connecting components, and a signal acquisition unit. Their core working principle involves sensing forces through a sensitive element within the sensing body, generating deformation or electrical signal changes, and then outputting force magnitude data after signal processing. Structurally, the fixed base is used for sensor installation and positioning, while the connecting components connect the object being measured to the sensing body. Some sensors attempt to measure forces in multiple directions by adding universal joints or multiple sensing units. For example, some lateral tension sensors use fixed constraint structures to limit the range of motion of the sensing body to ensure horizontal measurement accuracy; vertical tension sensors often employ a suspended connection structure to adapt to vertical force loading scenarios. However, this type of mechanical sensor has the following drawbacks when performing mechanical testing on UAVs:

[0004] The existing sensors have relatively independent horizontal and vertical testing structures, which rely on complex operations such as replacing connecting components and adjusting the installation posture to achieve mode switching. The testing state switching lacks flexibility and cannot quickly switch between horizontal, horizontal multi-angle and vertical testing states through its own integrated structure. The operation is cumbersome and time-consuming, which seriously affects the testing efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mechanical sensor with multi-directional load function, solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] Mechanical sensors with multi-directional load function include:

[0008] Fixed block;

[0009] A tensile testing mechanism includes a connecting frame 1, a tensile sensor, a connecting frame 2, and a pull ring. The connecting frame 1 is ball-connected to one side of the fixed block. The tensile sensor is hinged to the end of the connecting frame 1 away from the fixed block by a bolt 1. The other end of the tensile sensor is hinged to the connecting frame 2 by a bolt 2. A pull ring is integrally formed at the end of the connecting frame 2.

[0010] The support mechanism includes a connecting component, a positioning component, and a snap-fit ​​component. The bottom of the fixed block is hinged to the connecting component, and the fixed block is equipped with the positioning component. The end of the positioning component can be connected to the connecting component, and the end of the connecting component away from the fixed block is equipped with the snap-fit ​​component.

[0011] The constraint detection mechanism includes a mounting component and a constraint detection component. The mounting component is mounted on the side of the fixing block near the connecting frame and below the connecting frame. The constraint detection component, which is sleeved on the outside of the tension sensor, is detachably mounted on the mounting component.

[0012] Mechanical sensors include the following states:

[0013] Lateral detection includes a first mode and a second mode:

[0014] In the first mode, the constraint detection component locks the tension sensor so that the tension sensor only performs horizontal tension tests;

[0015] In the second mode, the constraint detection component unlocks the tension sensor, allowing the tension sensor to perform lateral multi-angle tension tests;

[0016] In the vertical detection state, the snap-fit ​​component rotates and engages with the pull ring to form a hoisting structure for the tension sensor, thus constraining the detection component to switch to vertical force measurement mode;

[0017] The pull ring is connected to the main body of the drone via a traction component.

[0018] Furthermore: the connecting component includes a hinge block, a connecting block, a U-shaped frame, and a base plate. The bottom of the fixed block is hinged to the hinge block via a hinge shaft. The bottom of the hinge block is fixed to the connecting block. A U-shaped frame is fixedly installed on the connecting block on the side of the fixed block away from the connecting frame. The bottom of the connecting block is fixed to the base plate. A positioning component is used to fix the hinge shaft and the fixed block. A snap-fit ​​component is installed on the base plate. When the snap-fit ​​component passes through the pull ring and snaps into the pull ring, the U-shaped frame is located in the middle of the bottom of the connecting block.

[0019] Furthermore: the positioning component includes a connecting rod, a positioning plate, a block, a sliding plate, and a driving spring. Mounting holes are provided on both sides of the fixing block. A sliding plate is horizontally slidably connected to the fixing block within the mounting holes. A connecting rod is fixedly mounted on the sliding plate, passing through the mounting holes. A positioning plate is fixedly mounted at one end of the connecting rod, extending through the mounting holes to the outside of the fixing block. A block is fixedly mounted on the side of the positioning plate closest to the fixing block. A square hole is provided at the end of the hinge shaft. A driving spring is sleeved on the outside of the connecting rod. Both ends of the driving spring abut against the inner walls of the sliding plate and the mounting holes, respectively. When the driving spring is in its natural state, the block is inserted into the square hole and engaged with the hinge shaft.

[0020] Furthermore: the snap-fit ​​component includes a square rod, a snap-fit ​​post, an adjusting rod, and a snap-fit ​​piece. An installation cavity is opened on the base plate on the side of the fixing block near the connecting frame. The square rod is horizontally slidably installed on the base plate within the installation cavity. A snap-fit ​​post extending to the outside of the installation cavity is fixedly installed at the end of the square rod. The snap-fit ​​post can movably penetrate the pull ring and fits the cross section between it and the inner sidewall of the pull ring. A snap-fit ​​piece that can snap with the pull ring is installed on the snap-fit ​​post. A horizontal adjusting rod is rotatably installed on the base plate and is threadedly connected to the square rod.

[0021] Furthermore: the snap-fit ​​component includes a spring telescopic rod and a snap-fit ​​block. A receiving cavity is provided on the outer wall of the snap-fit ​​post and at one end extending outside the mounting cavity. A horizontal spring telescopic rod is fixedly installed on the snap-fit ​​post and located inside the receiving cavity. A snap-fit ​​block extending outside the receiving cavity is fixedly installed at the end of the spring telescopic rod.

[0022] Furthermore: the constraint detection component includes a constraint ring, a guide rod, a constraint block, a threaded post, and a pressure sensor. The constraint ring is rotatably mounted on the mounting component. A guide rod is movably threaded through the constraint ring in a circular array. A constraint block is fixedly mounted at one end of the guide rod extending into the constraint ring. A threaded post is threaded through the constraint ring in a circular array. The threaded post and the constraint block are rotatably connected. A pressure sensor that can contact the outer periphery of the tension sensor is fixedly mounted on one of the constraint blocks. A buckle assembly is mounted at one end of the threaded post extending away from the pressure sensor and outside the constraint ring. The buckle assembly includes a fixing plate fixedly mounted at the end of the threaded post. J-shaped hooks are symmetrically rotatably mounted on the side of the fixing plate away from the threaded post. When the two J-shaped hooks are in contact, a buckle structure is formed by the two J-shaped hooks and the fixing plate. The two J-shaped hooks are fixed together by bolts.

[0023] Furthermore: the mounting components include mounting block one, a fixing frame, mounting block two, and bolts three. Mounting block one is fixedly mounted on one side of the fixing block and below the connecting frame one. One end of mounting block two is rotatably connected to the fixing frame. The fixing frame has an H-shaped cross-section. The two ends of the fixing frame are fixed to mounting block one and mounting block two respectively by two sets of bolts three. A constraint ring is rotatably mounted on the end of mounting block two.

[0024] Furthermore: the connecting block includes a housing, a lifting plate, and a threaded post II. The lifting plate is fixedly installed at the bottom of the hinge block. The housing is movably sleeved on the outside of the lifting plate. The cross-section between the outer side wall of the lifting plate and the inner side wall of the housing is in contact. The housing is fixedly connected to the bottom plate. The threaded post II is rotatably installed on the housing. The threaded post II is threadedly connected to the lifting plate.

[0025] Furthermore: the housing has an installation port, the bottom of the second threaded post extends to the inside of the installation port, and an adjustment component for driving the second threaded post to rotate is installed on the housing and inside the installation port;

[0026] The adjusting component includes a horizontally oriented rotating rod that is rotatably installed in the mounting port. The rotating rod is connected to a threaded column via a bevel gear assembly. One end of the rotating rod extends to the outside of the housing near the connecting frame and is fixedly mounted with a handle.

[0027] Furthermore: the traction component includes a positioning block, a clamping plate, a bidirectional threaded rod, a central shaft plate, a traction frame, a bolt component five, and a pull rope. The bottom of the UAV body is symmetrically fixed with a support frame. The positioning block can be placed on the top of the bottom wall of the support frame. The bottom of the positioning block is symmetrically and slidably equipped with a clamping plate that can abut against the side wall of the support frame. A horizontal bidirectional threaded rod is rotatably installed on the positioning block. The opposite sides of the two positioning blocks are rotatably connected to a central shaft plate. A pull rope is movably passed through the middle of the central shaft plate. The other end of the pull rope is fixedly connected to a traction frame. The traction frame can be sleeved on the outside of the pull ring. The traction frame has symmetrical through holes. A bolt component five is movably passed through the traction frame and located in the two through holes. The bolt component five can movably pass through the inside of the pull ring.

[0028] This invention provides a mechanical sensor with multi-directional load function. Compared with the prior art, it has the following advantages:

[0029] 1. Through the combined structure of fixed block, tensile testing mechanism, support mechanism, constraint testing mechanism and traction component, three testing states can be flexibly switched. In the horizontal testing state, the locking or unlocking structure of the constraint testing component can meet the horizontal tensile force and multi-angle tensile force testing respectively. In the vertical testing state, the snap-fit ​​component and the pull ring are connected to form a hoisting structure, and the constraint testing component switches to the vertical force measurement mode, which can adapt to the tensile force testing needs of UAVs in different directions and improve the versatility of the equipment.

[0030] 2. The threaded connection structure between the threaded column II and the lifting plate can precisely adjust the overall height of the connecting block, thereby adjusting the height of the tension sensor; ensuring that the tension sensor is kept consistent with the drone's traction height during horizontal testing, avoiding test errors caused by height differences, and improving the accuracy of horizontal tension test data;

[0031] 3. The constraint block of the ring array can be adjusted by the threaded column to stably lock the tension sensor and ensure the accuracy of horizontal testing; the pressure sensor realizes the accurate acquisition of force signals and avoids the impact of interdimensional interference on data accuracy; the buckle assembly can be switched to a buckle structure to adapt to vertical testing, or unfolded into a hook to realize the weighing function, expanding the use of the equipment. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown;

[0034] Figure 2 A schematic diagram of the installation structure of the constraint detection mechanism of the present invention is shown;

[0035] Figure 3 A schematic diagram of the installation structure of the snap-fit ​​post of the present invention is shown;

[0036] Figure 4 A schematic diagram of the constraint detection mechanism of the present invention is shown;

[0037] Figure 5 A schematic diagram of the mounting structure of the pressure sensor of the present invention is shown;

[0038] Figure 6 A schematic diagram of the mounting structure of the positioning component of the present invention is shown;

[0039] Figure 7 A schematic diagram of the installation structure of the tensile testing mechanism of the present invention is shown;

[0040] Figure 8 A schematic diagram of the mounting structure of the buckle assembly of the present invention is shown;

[0041] Figure 9 A schematic diagram of the mounting structure of the snap-fit ​​component of the present invention is shown;

[0042] Figure 10 A schematic diagram of the traction component of the present invention is shown;

[0043] Figure 11 A schematic diagram of the mounting structure of the adjusting component of the present invention is shown;

[0044] The diagram shows: 1. Fixed block; 2. Tension detection mechanism; 21. Connecting frame one; 22. Tension sensor; 23. Connecting frame two; 24. Pull ring; 25. Bolt one; 26. Bolt two; 3. Support mechanism; 31. Connecting component; 311. Hinge block; 312. Connecting block; 3121. Housing; 3122. Lifting plate; 3123. Threaded post two; 313. U-shaped frame; 314. Base plate; 315. Hinge shaft; 3151. Square hole; 32. Positioning component; 321. Connecting rod; 322. Positioning plate; 323. Square block; 324. Drive spring; 325. Sliding plate; 33. Snap-fit ​​component; 331. Square rod; 332. Snap-fit ​​post; 333. Adjusting rod; 334. Snap-fit ​​component; 334. 1. Spring telescopic rod; 3342. Clip block; 4. Restraint detection mechanism; 41. Mounting component; 411. Mounting block one; 412. Fixing frame; 413. Mounting block two; 414. Bolt three; 42. Restraint detection component; 421. Restraint ring; 422. Guide rod; 423. Restraint block; 424. Threaded post one; 425. Pressure sensor; 5. Adjustment component; 51. Rotating rod; 52. Bevel gear assembly; 6. Buckle assembly; 61. Fixing plate; 62. J-type hook; 63. Bolt four; 7. Traction component; 71. Positioning block; 72. Clamping plate; 73. Bidirectional threaded rod; 74. Central shaft plate; 75. Traction frame; 76. Bolt five; 77. Pull rope; 8. UAV body; 81. Support frame. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example

[0047] To address the technical problems in the background section, the following mechanical sensor with multi-directional load function is provided:

[0048] Combination Figures 1-11 As shown, the mechanical sensor with multi-directional load function provided by the present invention includes:

[0049] Fixed block 1;

[0050] The tensile testing mechanism 2 includes a connecting frame 1 21, a tensile sensor 22, a connecting frame 23, and a pull ring 24. The connecting frame 1 21 is ball-connected to one side of the fixing block 1. The tensile sensor 22 is hinged to the end of the connecting frame 1 21 away from the fixing block 1 by a bolt 1 25. The other end of the tensile sensor 22 is hinged to the connecting frame 23 by a bolt 26. The pull ring 24 is integrally formed at the end of the connecting frame 23.

[0051] The support mechanism 3 includes a connecting component 31, a positioning component 32, and a snap-fit ​​component 33. The bottom of the fixing block 1 is hinged to the connecting component 31, and the fixing block 1 is equipped with the positioning component 32. The end of the positioning component 32 can be connected to the connecting component 31, and the end of the connecting component 31 away from the fixing block 1 is equipped with the snap-fit ​​component 33.

[0052] The constraint detection mechanism 4 includes a mounting component 41 and a constraint detection component 42. The mounting component 41 is mounted on the side of the fixing block 1 near the connecting frame 21 and below the connecting frame 21. The constraint detection component 42, which is sleeved on the outside of the tension sensor 22, is detachably mounted on the mounting component 41.

[0053] Mechanical sensors include the following states:

[0054] Lateral detection includes a first mode and a second mode:

[0055] In the first mode, the constraint detection component 42 locks the tension sensor 22 so that the tension sensor 22 only performs horizontal tension tests;

[0056] In the second mode, the constraint detection component 42 unlocks the tension sensor 22 so that the tension sensor 22 can perform a lateral multi-angle tension test;

[0057] In the vertical detection state, the snap-fit ​​component 33 rotates and engages with the pull ring 24 to form a hoisting structure for the tension sensor 22, and the constraint detection component 42 is converted to the vertical force measurement mode;

[0058] The pull ring 24 is connected to the drone body 8 via the traction component 7.

[0059] The combination structure of fixed block 1, tensile testing mechanism 2, support mechanism 3, constraint testing mechanism 4 and traction component 7 enables flexible switching between three testing states. In the horizontal testing state, the locking or unlocking structure of constraint testing component 42 satisfies horizontal tensile force and multi-angle tensile force testing respectively. In the vertical testing state, the snap-fit ​​component 33 connects with the pull ring 24 to form a hoisting structure, and constraint testing component 42 switches to vertical force measurement mode, adapting to the tensile force testing needs of UAVs in different directions and improving the versatility of the equipment.

[0060] Combination Figures 1-11As shown, the connecting component 31 includes a hinge block 311, a connecting block 312, a U-shaped frame 313, and a base plate 314. The bottom of the fixing block 1 is hinged to the hinge block 311 via a hinge shaft 315. The bottom of the hinge block 311 is fixed to the connecting block 312. The U-shaped frame 313 is fixedly installed on the connecting block 312 on the side of the fixing block 1 away from the connecting frame 21. The bottom of the connecting block 312 is fixed to the base plate 314. The positioning component 32 is used to fix the hinge shaft 315 and the fixing block 1. The snap-fit ​​component 33 is installed on the base plate 314. When the snap-fit ​​component 33 passes through and snaps into the pull ring 24, the U-shaped frame 313 is located at the bottom center of the connecting block 312. During use, the base plate 314 can be fixed to the ground to ensure lateral test stability. The hinge block 311 is connected to the fixed block 1 through the hinge shaft 315, providing a basis for the rotation switching state of the support mechanism 3. When the snap-fit ​​component 33 snaps into the pull ring 24, the U-shaped frame 313 is in a specific position, which is convenient for hand operation during vertical testing and can also form a stable hoisting structure to improve the structural reliability under different test conditions.

[0061] Combination Figures 1-11 As shown, the positioning component 32 includes a connecting rod 321, a positioning plate 322, a block 323, a sliding plate 325, and a driving spring 324. Mounting holes are provided on both sides of the fixing block 1. A sliding plate 325 is horizontally slidably connected to the fixing block 1 within the mounting holes. A connecting rod 321 is fixedly mounted on the sliding plate 325, passing through the mounting holes. The positioning plate 322 is fixedly mounted at one end of the connecting rod 321 extending through the mounting holes to the outside of the fixing block 1. A block 323 is fixedly mounted on the side of the positioning plate 322 near the fixing block 1. A square hole 3151 is provided at the end of the hinge shaft 315. A driving spring 324 is sleeved on the outside of the connecting rod 321. The two ends of the driving spring 324 abut against the inner wall of the sliding plate 325 and the mounting hole, respectively. When the driving spring 324 is in its natural state, the block 323 is inserted into the square hole 3151 and engaged with the hinge shaft 315. In use, the elastic force of the driving spring 324 makes the block 323 stably inserted into the square hole 3151 of the hinge shaft 315, realizing the reliable positioning of the hinge block 311 and the fixed block 1. Pulling the positioning plate 322 can unlock it, and it will automatically reset and lock after being released. No complicated operation is required, which ensures the stability of the support mechanism 3 during horizontal testing and the positioning after rotation during vertical testing, ensuring that the structural position remains unchanged during the test and improving the accuracy of the data.

[0062] Combination Figures 1-11As shown, the snap-fit ​​component 33 includes a square rod 331, a snap-fit ​​post 332, an adjusting rod 333, and a snap-fit ​​piece 334. An installation cavity is formed on the base plate 314 on the side of the fixing block 1 near the connecting frame 21. The square rod 331 is horizontally slidably installed on the base plate 314 within the installation cavity. A snap-fit ​​post 332 extending to the outside of the installation cavity is fixedly installed at the end of the square rod 331. The snap-fit ​​post 332 movably passes through the pull ring 24 and is engaged with the inner side of the pull ring 24. The cross-sections of the walls fit together. A snap-fit ​​part 334 that can snap into the pull ring 24 is installed on the snap-fit ​​post 332. A horizontal adjusting rod 333 is rotatably installed on the base plate 314. The adjusting rod 333 is threadedly connected to the square rod 331. In use, the threaded connection structure between the adjusting rod 333 and the square rod 331 can precisely control the displacement of the snap-fit ​​post 332, so that it fits into the inner wall of the pull ring 24. After the snap-fit ​​part 334 snaps into the pull ring 24, a stable hoisting structure is formed.

[0063] Combination Figures 1-11 As shown, the snap-fit ​​component 334 includes a spring telescopic rod 3341 and a snap-fit ​​block 3342. The outer wall of the snap-fit ​​post 332, extending to the outside of the mounting cavity, has a receiving cavity. A horizontal spring telescopic rod 3341 is fixedly installed on the snap-fit ​​post 332 within the receiving cavity. A snap-fit ​​block 3342 extending to the outside of the receiving cavity is fixedly installed at the end of the spring telescopic rod 3341. The end of the snap-fit ​​block 3342 is arc-shaped. The elastic structure of the spring telescopic rod 3341 allows the snap-fit ​​block 3342 to automatically extend and retract. When the snap-fit ​​post 332 passes through the pull ring 24, the snap-fit ​​block 3342 automatically retracts and automatically pops out after reaching the position, making operation convenient.

[0064] Combination Figures 1-11As shown, the constraint detection component 42 includes a constraint ring 421, a guide rod 422, a constraint block 423, a threaded post 424, and a pressure sensor 425. The constraint ring 421 is rotatably mounted on the mounting component 41. The guide rod 422 is movably inserted through the constraint ring 421 in a ring array. The constraint block 423 is fixedly mounted at one end of the guide rod 422 extending into the constraint ring 421. The threaded post 424 is threaded through the constraint ring 421 in a ring array. The threaded post 424 is rotatably connected to the constraint block 423. A pressure sensor 425 that can contact the outer periphery of the tension sensor 22 is fixedly mounted on one of the constraint blocks 423. The threaded post 424, away from the pressure sensor 425, extends to the outside of the constraint ring 421. One end of the device is equipped with a retaining ring assembly 6, which includes a fixing plate 61 fixedly installed at the end of the threaded post 424. J-shaped hooks 62 are symmetrically and rotatably installed on the side of the fixing plate 61 away from the threaded post 424. When the two J-shaped hooks 62 are in contact, a retaining ring structure is formed by the two J-shaped hooks 62 and the fixing plate 61. The two J-shaped hooks 62 are fixed together by bolts 63. The constraint blocks 423 of the annular array are adjusted by the threaded post 424 to stably lock the tension sensor 22 and ensure the accuracy of the horizontal test. The pressure sensor 425 realizes the accurate acquisition of force signals and avoids the influence of interdimensional interference on data accuracy. The retaining ring assembly 6 can be switched to a retaining ring structure to adapt to vertical testing, or unfolded into a hook to realize the weighing function, thus expanding the application of the equipment.

[0065] Combination Figures 1-11 As shown, the mounting component 41 includes mounting block 1 411, fixing frame 412, mounting block 2 413, and bolt 3 414. Mounting block 1 411 is fixedly mounted on one side of fixing block 1 and below connecting frame 21. Fixing frame 412 is rotatably connected to one end of mounting block 2 413. Fixing frame 412 has an H-shaped cross-section. The two ends of fixing frame 412 are fixed to mounting block 1 411 and mounting block 2 413 respectively by two sets of bolt 3 414. Constraint ring 421 is rotatably mounted on the end of mounting block 2 413. The H-shaped fixing frame 412 achieves detachable fixing of mounting block 1 411 and mounting block 2 413 by bolt 3 414. Constraint ring 421 is rotatably mounted on mounting block 2 413, which facilitates the disassembly, installation, and angle adjustment of constraint detection component 42. Furthermore, the overall connection structure is stable, ensuring that constraint detection component 42 does not shift during testing, while simplifying the operation steps during mode switching and improving testing efficiency.

[0066] Combination Figures 1-11As shown, the connecting block 312 includes a housing 3121, a lifting plate 3122, and a threaded post 3123. The lifting plate 3122 is fixedly installed at the bottom of the hinge block 311. The housing 3121 is movably sleeved on the outside of the lifting plate 3122. The cross-section between the outer side wall of the lifting plate 3122 and the inner side wall of the housing 3121 is in contact. The housing 3121 is fixedly connected to the base plate 314. The threaded post 3123 is rotatably installed on the housing 3121. The threaded post 3123 is threadedly connected to the lifting plate 3122. The threaded connection structure between the threaded post 3123 and the lifting plate 3122 can precisely adjust the overall height of the connecting block 312, thereby adjusting the height of the tension sensor 22. This ensures that the tension sensor 22 is kept consistent with the traction height of the UAV during horizontal testing, avoiding test errors caused by height differences and improving the accuracy of horizontal tension test data.

[0067] Combination Figures 1-11 As shown, the housing 3121 has an installation port, the bottom of the threaded post 3123 extends to the inside of the installation port, and an adjustment component 5 for driving the threaded post 3123 to rotate is installed on the housing 3121 and located inside the installation port.

[0068] The adjustment component 5 includes a horizontally oriented rotating rod 51 rotatably installed in the mounting port. The rotating rod 51 is connected to the threaded column 3123 via a bevel gear assembly 52. ​​One end of the rotating rod 51 extends to the outside of the housing 3121 near the connecting frame 21 and is fixedly mounted with a handle. The handle drives the threaded column 3123 to rotate via the rotating rod 51 and the bevel gear assembly 52, converting horizontal force application into vertical adjustment, making operation more labor-saving. The external design of the handle facilitates manual control of the adjustment speed and amplitude, enabling precise fine-tuning of the height, improving the convenience and accuracy of the height adjustment of the tension sensor 22, and ensuring compatibility with test conditions.

[0069] Combination Figures 1-11As shown, the traction component 7 includes a positioning block 71, a clamping plate 72, a bidirectional threaded rod 73, a central shaft plate 74, a traction frame 75, bolts 76, and a pull rope 77. A support frame 81 is symmetrically fixed to the bottom of the UAV body 8. The positioning block 71 can be placed on the top of the inner bottom wall of the support frame 81. A clamping plate 72, which can abut against the side wall of the support frame 81, is symmetrically slidably installed on the bottom of the positioning block 71. A horizontal bidirectional threaded rod 73 is rotatably installed on the positioning block 71. A central shaft plate 74 is rotatably connected to the opposite sides of the two positioning blocks 71. A pull rope 77 is movably passed through the middle of the central shaft plate 74. The other end of the pull rope 77 is fixedly connected to the traction frame 75. The traction frame 75 can be sleeved on the outside of the pull ring 24 for traction. The frame 75 has symmetrical perforations, and bolts 76 are movably inserted through the two perforations on the traction frame 75. Bolts 76 can also movably pass through the inside of the pull ring 24. In use, the bidirectional threaded rod 73 adjusts the clamping plate 72 to adapt to support frames 81 of different sizes, achieving a stable connection between the positioning block 71 and the UAV. The central axis plate 74 makes the tension transmission of the pull rope 77 more stable. The traction frame 75 and the pull ring 24 are fixed by bolts 76 to ensure that the tension is efficiently transmitted to the tension sensor 22. At the same time, the traction frame 75 can be disassembled and the installation position changed to adapt to the tension transmission requirements of different test scenarios, such as horizontal and vertical, reducing force loss and angle deviation during transmission and improving the reliability of test data.

[0070] Working principle and usage process of this invention:

[0071] When using:

[0072] S1: When conducting a lateral multi-angle tensile test on the main body 8 of the drone:

[0073] Fix the base plate 314 to the outdoor ground, rotate the four threaded columns 424 respectively, and drive the four constraint blocks 423 to move away from each other, so that the pressure sensor 425 and the other three constraint blocks 423 are not in contact with the tension sensor 22. Remove the bolt 414 installed on the fixing frame 412 and the mounting block 411, and remove the fixing between the fixing frame 412 and the mounting block 411. Pull the constraint ring 421 out from the outside of the tension sensor 22 and remove the constraint detection component 42.

[0074] The traction frame 75 is fitted onto the outside of the pull ring 24, and the screw of the bolt 76 passes through the traction frame 75 and the pull ring 24. The bolt 76 is used to fix the traction frame 75 and the pull ring 24. The two positioning blocks 71 are placed on the top of the inner bottom wall of the two support frames 81 respectively. The two bidirectional threaded rods 73 are rotated respectively, so that the two clamping plates 72 on the positioning blocks 71 abut against the two sides of the support frame 81 respectively, and the two positioning blocks 71 are fixed to the two support frames 81 at the bottom of the UAV body 8.

[0075] When the main body of the UAV 8 takes off, the towing frame 75 is pulled by the pull rope 77, which in turn pulls the tension sensor 22 through the connecting frame 23. The tension sensor 22 is subjected to tension, thus achieving the tension test effect. During the take-off operation of the main body of the UAV 8, when the flight direction of the main body of the UAV 8 is adjusted, the connecting frame 21 rotates around its connection with the fixed block 1 along with the flight direction of the main body of the UAV 8, so that the traction tension test effect is achieved at the moment of flight direction adjustment of the main body of the UAV 8.

[0076] S2: When conducting a lateral horizontal tensile test on the main body 8 of the drone:

[0077] Disassemble bolt 76, disassemble the traction frame 75 and pull ring 24, pass the constraint ring 421 through the outside of the connecting frame 23 and put it on the outside of the tension sensor 22, install bolt 414 for fixing mounting block 411 and fixing frame 412, fix mounting block 411 and fixing frame 412, rotate the four threaded pins 424 respectively to bring the four constraint blocks 423 closer to each other, and then by rotating the constraint ring 421, make the pressure sensor 425 and the other three constraint blocks 423 fit against the outer wall of the tension sensor 22, thereby limiting the tension sensor 22;

[0078] The traction frame 75 is fitted onto the outside of the pull ring 24, and the screw of the bolt 76 passes through the traction frame 75 and the pull ring 24. The bolt 76 is used to fix the traction frame 75 and the pull ring 24. Then, the throttle handle is used to rotate the rotating rod 51 on the housing 3121. The bevel gear assembly 52 drives the threaded column 3123 to rotate on the housing 3121, causing the lifting plate 3122 to slide on the housing 3121 outward. The hinge block 311 slides outward, and the height of the fixed block 1 is adjusted, thereby adjusting the height of the tension sensor 22. When the UAV body 8 takes off, the height of the central axis plate 74 and the height of the traction frame 75 are on the same horizontal plane. The UAV body 8 is controlled to fly away from the fixed block 1, thus achieving the effect of lateral horizontal tension test on the UAV body 8.

[0079] S3: When performing vertical tensile force testing on the main body 8 of the drone:

[0080] Remove the fixing of the base plate 314, pull the two positioning plates 322 to move the connecting rod 321 to the outside of the mounting hole, and the sliding plate 325 moves synchronously in the mounting hole, so that the block 323 moves to the outside of the square hole 3151. Remove the jamming state between the block 323 and the hinge shaft 315, drive the spring 324 to deform under force, apply rotational force to the housing 3121, drive the hinge block 311 to rotate at the bottom of the fixed block 1, so that the housing 3121 rotates to a horizontal position. Remove the pulling force on the two positioning plates 322, drive the spring 324 to return to its natural state, push the sliding plate 325 to slide and reset in the mounting hole, so that the block 323 is inserted into the square hole 3151 and jammed with the hinge shaft 315, positioning the hinge block 311 and the fixed block 1, and positioning the housing 3121.

[0081] Rotating the threaded column 3123 causes the lifting plate 3122 to slide within the housing 3121, moving the base plate 314 closer to or further away from the fixed block 1, thus adjusting the position of the base plate 314. Rotating the adjusting rod 333 causes the square rod 331 to move upward within the mounting cavity, pushing the locking column 332 upward. With the cooperation of the threaded column 3123, the end of the locking column 332 penetrates the inner side of the pull ring 24. When the locking block 3342 abuts against the pull ring 24, the locking mechanism engages. The arc surface at the end of block 3342 abuts against the pull ring 24, and the locking block 3342 moves into the receiving cavity. The spring telescopic rod 3341 deforms under force. When the locking post 332 passes through the pull ring 24 and the receiving cavity moves above the pull ring 24, the spring telescopic rod 3341 returns to its natural state and pushes the locking block 3342 to slide back to the outside of the receiving cavity, so that the locking post 332 and the pull ring 24 are locked together, thus forming a hoisting structure for the tension sensor 22.

[0082] Disassemble bolt 76 to separate the traction frame 75 from the pull ring 24. Rotate the two J-hooks 62 to make them fit together. Use bolt 63 to fix the two J-hooks 62 together. The two J-hooks 62 and the fixing plate 61 form a buckle structure. Sleeve the traction frame 75 on the outside of the two J-hooks 62, so that the traction frame 75 is sleeved on the outside of the buckle structure. The screw of bolt 76 passes through the traction frame 75 and the inside of the buckle structure. Fix the traction frame 75 and the buckle structure with bolt 76. Disassemble the two bolts 414 so that the fixing frame 412 rotates on the mounting block 413 without contacting the mounting block 411.

[0083] When the person holds the U-shaped frame 313 and the main body of the drone 8 takes off, the main body of the drone 8 flies vertically upward. When the pull rope 77 is straightened, it drives the constraint ring 421 to move upward, thereby driving the pressure sensor 425 to move upward and contact the bottom of the tension sensor 22. The force detection signal of the pressure sensor 425 changes, thus realizing the vertical tension detection effect of the main body of the drone 8.

[0084] When the snap-fit ​​component 33 rotates and engages with the pull ring 24 to form a hoisting structure for the tension sensor 22, the volume of the mechanical sensor is reduced, making it easier to carry and store. Furthermore, during object hoisting and transfer experiments using the UAV body 8, the bolt component 76 is disassembled, thereby disassembling the traction frame 75 and the buckle structure. At this time, the bolt component 63 is disassembled, canceling the positioning of the two J-hooks 62. The two J-hooks 62 are rotated separately, causing them to move away from each other. The bolt component 63 then fixes the two J-hooks 62 together, forming two hooks in the buckle assembly 6. This creates a weighing structure for the mechanical sensor, allowing personnel to use the two hooks to lift objects from the UAV body 8 and weigh them, achieving a pre-detection of the weight of objects hoisted and transferred by the UAV body 8.

[0085] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mechanical sensor with multi-directional load function, characterized in that: include: Fixed block; A tensile testing mechanism includes a connecting frame 1, a tensile sensor, a connecting frame 2, and a pull ring. The connecting frame 1 is ball-connected to one side of the fixed block. The tensile sensor is hinged to the end of the connecting frame 1 away from the fixed block by a bolt 1. The other end of the tensile sensor is hinged to the connecting frame 2 by a bolt 2. A pull ring is integrally formed at the end of the connecting frame 2. The support mechanism includes a connecting component, a positioning component, and a snap-fit ​​component. The bottom of the fixed block is hinged to the connecting component, the fixed block is equipped with the positioning component, the end of the positioning component is connected to the connecting component, and the end of the connecting component away from the fixed block is equipped with the snap-fit ​​component. The constraint detection mechanism includes a mounting component and a constraint detection component. The mounting component is mounted on the side of the fixing block near the connecting frame and below the connecting frame. The constraint detection component, which is sleeved on the outside of the tension sensor, is detachably mounted on the mounting component. Mechanical sensors include the following states: Lateral detection includes a first mode and a second mode: In the first mode, the constraint detection component locks the tension sensor so that the tension sensor only performs horizontal tension tests; In the second mode, the constraint detection component unlocks the tension sensor, allowing the tension sensor to perform lateral multi-angle tension tests; In the vertical detection state, the snap-fit ​​component rotates and engages with the pull ring to form a hoisting structure for the tension sensor, thus constraining the detection component to switch to vertical force measurement mode; The pull ring is connected to the main body of the drone via a traction component.

2. The mechanical sensor with multi-directional load function according to claim 1, characterized in that: The connecting component includes a hinge block, a connecting block, a U-shaped frame, and a base plate. The bottom of the fixed block is hinged to the hinge block via a hinge shaft. The bottom of the hinge block is fixed to the connecting block. A U-shaped frame is fixedly installed on the connecting block on the side of the fixed block away from the connecting frame. The bottom of the connecting block is fixed to the base plate. A positioning component is used to fix the hinge shaft and the fixed block. A snap-fit ​​component is installed on the base plate. When the snap-fit ​​component passes through the pull ring and snaps into the pull ring, the U-shaped frame is located in the middle of the bottom of the connecting block.

3. The mechanical sensor with multi-directional load function according to claim 2, characterized in that: The positioning component includes a connecting rod, a positioning plate, a block, a sliding plate, and a driving spring. Mounting holes are provided on both sides of the fixing block. A sliding plate is horizontally slidably connected to the fixing block within the mounting holes. A connecting rod that movably passes through the mounting holes is fixedly mounted on the sliding plate. A positioning plate is fixedly mounted at one end of the connecting rod that extends through the mounting holes to the outside of the fixing block. A block is fixedly mounted on the side of the positioning plate closest to the fixing block. A square hole is provided at the end of the hinge shaft. A driving spring is sleeved on the outside of the connecting rod. Both ends of the driving spring abut against the inner walls of the sliding plate and the mounting holes, respectively. When the driving spring is in its natural state, the block is inserted into the square hole and engaged with the hinge shaft.

4. The mechanical sensor with multi-directional load function according to claim 3, characterized in that: The snap-fit ​​component includes a square rod, a snap-fit ​​post, an adjusting rod, and a snap-fit ​​piece. An installation cavity is formed on the base plate on the side of the fixing block near the connecting frame. The square rod is horizontally slidably installed on the base plate within the installation cavity. A snap-fit ​​post extending to the outside of the installation cavity is fixedly installed at the end of the square rod. The snap-fit ​​post movably passes through the pull ring and fits against the cross section of the inner sidewall of the pull ring. A snap-fit ​​piece that snaps into the pull ring is installed on the snap-fit ​​post. A horizontal adjusting rod is rotatably installed on the base plate and is threadedly connected to the square rod.

5. The mechanical sensor with multi-directional load function according to claim 4, characterized in that: The snap-fit ​​component includes a spring telescopic rod and a snap-fit ​​block. A receiving cavity is provided on the outer side wall of the snap-fit ​​post and at one end extending outside the mounting cavity. A horizontal spring telescopic rod is fixedly installed on the snap-fit ​​post and inside the receiving cavity. A snap-fit ​​block extending outside the receiving cavity is fixedly installed at the end of the spring telescopic rod.

6. The mechanical sensor with multi-directional load function according to claim 1, characterized in that: The constraint detection component includes a constraint ring, a guide rod, a constraint block, a threaded post, and a pressure sensor. The constraint ring is rotatably mounted on the mounting component. The guide rod is movably inserted through the constraint ring in a ring array. A constraint block is fixedly mounted at one end of the guide rod extending into the constraint ring. A threaded post is threaded through the constraint ring in a ring array. The threaded post and the constraint block are rotatably connected. A pressure sensor is fixedly mounted on one of the constraint blocks, which is in contact with the outer periphery of the tension sensor. A buckle assembly is mounted at one end of the threaded post extending away from the pressure sensor to the outside of the constraint ring. The buckle assembly includes a fixing plate fixedly mounted at the end of the threaded post. J-shaped hooks are symmetrically rotatably mounted on the side of the fixing plate away from the threaded post. When the two J-shaped hooks are in contact, a buckle structure is formed by the two J-shaped hooks and the fixing plate. The two J-shaped hooks are fixed together by bolts. The mounting components include mounting block one, a fixing frame, mounting block two, and bolts three. Mounting block one is fixedly mounted on one side of the fixing block and below the connecting frame one. One end of mounting block two is rotatably connected to the fixing frame. The fixing frame has an H-shaped cross-section. The two ends of the fixing frame are fixed to mounting block one and mounting block two respectively by two sets of bolts three. A constraint ring is rotatably mounted on the end of mounting block two.

7. The mechanical sensor with multi-directional load function according to claim 2, characterized in that: The connecting block includes a housing, a lifting plate, and a threaded post II. The lifting plate is fixedly installed at the bottom of the hinge block. The housing is movably sleeved on the outside of the lifting plate. The cross-section between the outer wall of the lifting plate and the inner wall of the housing is in contact. The housing is fixedly connected to the bottom plate. The threaded post II is rotatably installed on the housing. The threaded post II is threadedly connected to the lifting plate.

8. The mechanical sensor with multi-directional load function according to claim 7, characterized in that: The housing has an opening for mounting, the bottom of the second threaded post extends to the inside of the mounting opening, and an adjustment component for driving the second threaded post to rotate is installed on the housing and inside the mounting opening. The adjusting component includes a horizontally oriented rotating rod that is rotatably installed in the mounting port. The rotating rod is connected to a threaded column via a bevel gear assembly. One end of the rotating rod extends to the outside of the housing near the connecting frame and is fixedly mounted with a handle.

9. The mechanical sensor with multi-directional load function according to claim 1, characterized in that: The traction component includes a positioning block, a clamping plate, a bidirectional threaded rod, a central axis plate, a traction frame, five bolts, and a pull rope. The bottom of the UAV body is symmetrically fixed with a support frame. The positioning block is placed on the top of the bottom wall of the support frame. The bottom of the positioning block is symmetrically and slidably fitted with a clamping plate that abuts against the side wall of the support frame. A horizontal bidirectional threaded rod is rotatably mounted on the positioning block. The opposite sides of the two positioning blocks are rotatably connected to a central axis plate. A pull rope is movably passed through the middle of the central axis plate. The other end of the pull rope is fixedly connected to a traction frame. The traction frame is sleeved on the outside of the pull ring. The traction frame has symmetrical through holes. Five bolts are movably passed through the traction frame and located in the two through holes. The five bolts also movably pass through the inside of the pull ring.

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