Casing tensile test device and system

Abstract

The present invention belongs to the technical field of mechanical testing equipment, and in particular, relates to a casing tensile testing device and system, the casing tensile testing device comprises a frame, a supporting mechanism and a load measuring device, the supporting mechanism comprises two cross beams and two longitudinal beams, the two cross beams are both arranged on the frame, the two longitudinal beams are both arranged on the two cross beams and can move along the length direction of the two cross beams, the longitudinal beams are provided with a fixing seat for connecting with the rotor arm of an unmanned aerial vehicle, the fixing seat can move along the length direction of the longitudinal beam, the load measuring device is arranged in the frame and connected with the casing of the unmanned aerial vehicle to test the ultimate tensile load and deformation of the casing. In this way, the fixed position of the supporting mechanism relative to the rotor arm of the unmanned aerial vehicle can be flexibly adjusted and changed in the horizontal and / or longitudinal directions, so that no matter what the specifications, size and wheelbase of the unmanned aerial vehicle are, it can always find a suitable assembly position between the two longitudinal beams.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical testing equipment, and in particular relates to a casing tensile testing device and system. Background Art

[0002] With the development and progress of technology, drones have been widely used in many fields such as aerial photography, agriculture, plant protection, selfies, express delivery, disaster relief, monitoring infectious diseases, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting, etc. When drones are used in some of the above fields, they need to carry out load-bearing operations. Therefore, during the design process of drones, it is necessary to perform tensile tests on the drone casing to verify the load-bearing performance of the drone and ensure the normal use of the drone. However, the current drone tensile tests cannot meet the tensile tests of drone casings of different specifications, wheelbases and sizes. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a casing tensile testing device and system, aiming to solve the technical problem of tensile testing of UAV casings of different types, different wheelbases and different sizes that cannot be met by existing UAV tensile testing equipment.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in an embodiment of the present invention is: a casing tensile testing device, comprising a frame, a supporting mechanism and a load measuring device, the supporting mechanism comprising two cross beams and two longitudinal beams, the two cross beams are both arranged on the frame, the two longitudinal beams are both arranged on the two cross beams and can move along the length direction of the two cross beams, the longitudinal beams are provided with at least one fixing seat for connecting to the rotor arm of the drone, the fixing seat can move along the length direction of the longitudinal beam, the load measuring device is arranged in the frame, and is used to connect to the casing of the drone to test the ultimate tensile load and deformation of the casing.

[0005] Optionally, the support mechanism further includes a plurality of connection components, at least one of which is disposed on the crossbeam, and the connection component can move along the length direction of the corresponding crossbeam and is connected to the corresponding longitudinal beam.

[0006] Optionally, the connecting assembly includes a locking nut, a locking bolt and a connecting plate, the crossbeam is provided with a sliding groove along its length direction, the locking bolt is slidably arranged in the sliding groove and passes through the connecting plate, the locking nut and the locking bolt pass through one end of the connecting plate and are threaded together, and the connecting plate is connected to the corresponding longitudinal beam.

[0007] Optionally, the support mechanism further includes at least one first lifting rod and at least one second lifting rod, the first lifting rod and the second lifting rod are respectively arranged on opposite sides of the frame and can move along the height direction of the frame, and the first lifting rod and the second lifting rod are respectively connected to the two longitudinal beams.

[0008] Optionally, the load measuring device includes a device body and a mounting mechanism, the device body is arranged in the frame, the lower end of the mounting mechanism is connected to the device body, and the upper end of the mounting mechanism is used to be connected to the casing.

[0009] Optionally, the mounting mechanism includes a mounting bracket, two fixed beams and two load-bearing beams for connecting to the casing, the mounting bracket and the device body are hingedly connected, the two fixed beams are arranged on the mounting bracket at intervals, the two load-bearing beams are connected between the two fixed beams, and can move along the length direction of the two fixed beams.

[0010] Optionally, the device body includes an assembly frame, a sensor for detecting tensile load and deformation, a driving mechanism and a monitoring module. The assembly frame is arranged in the frame and can move in the frame laterally and / or longitudinally. The driving mechanism is arranged on the assembly frame. The sensor is connected to the driving mechanism and is hingedly connected to the bracket. The monitoring module is arranged on the frame and electrically connected to the sensor to obtain the load and deformation data measured by the sensor.

[0011] Optionally, the driving mechanism includes a gantry, a driving motor and a transmission assembly, the driving motor is arranged in the assembly frame, and the driving end of the driving motor is connected to the gantry through the transmission assembly.

[0012] The embodiment of the present invention has at least the following technical effects: the casing tensile test device provided by the embodiment of the present invention, when testing the tensile force and deformation of the unmanned aerial vehicle casing, the casing of the unmanned aerial vehicle is fixed on the two longitudinal beams of the support mechanism, the load measuring device arranged in the frame is connected to the casing, and a tensile force is applied to the casing. In this process, the load measuring device can realize the acquisition of the ultimate tensile load of the casing and the deformation amount of the casing when the casing is subjected to the tensile force, and because in the support mechanism, the two longitudinal beams are arranged on the two cross beams, and the two longitudinal beams can move along the length direction of the two cross beams, and the fixing seats arranged on the two longitudinal beams can move along the length direction of the longitudinal beams, so that the fixed position of the support mechanism relative to the rotor arm of the unmanned aerial vehicle can be flexibly adjusted and changed in the horizontal and / or longitudinal directions, so that no matter what the specifications, size and wheelbase of the unmanned aerial vehicle are, it can always find a suitable assembly position between the two longitudinal beams. In this way, the casing tensile test device provided by the embodiment of the present invention can effectively support the acquisition of the ultimate tensile load and deformation amount of casings of different specifications, wheelbases and sizes.

[0013] Another technical solution adopted by the embodiment of the present invention is: a casing tensile testing system, comprising:

[0014] The host computer is used to establish a test item task of the casing of the drone according to the user's input information, wherein the test item task includes a deformation test item and a tension test item;

[0015] The host computer determines the execution mode of the deformation test item and the tension test item according to the user's input information, and the execution mode includes immediate execution and timed execution;

[0016] A casing tensile testing device, which is mounted under the casing of the drone and is used to perform the tensile test item and the deformation test item on the casing of the drone after determining the execution mode;

[0017] After the casing tensile test device completes testing of the deformation test item and / or the tensile test item, the host computer acquires and displays test data measured by the casing tensile test device.

[0018] Optionally, the host computer determines the number of tests, test duration, data recording time point for each test and monitoring interval duration for each test of the deformation test item and the tension test item based on the user's input information, and the casing tension testing device performs deformation test and tension test on the casing of the drone based on the number of tests, test duration, data recording time point for each test and monitoring interval duration for each test.

[0019] The casing tensile testing system provided by the embodiment of the present invention can, when in operation, first establish a test task for a deformation test item and a tensile test item of the casing of the drone, and determine an immediate execution mode or a timed execution mode for the deformation test item and the tensile test item. Afterwards, the casing tensile testing device can test the deformation and tensile value of the drone casing under the applied load according to the above-mentioned test task and execution mode information, and feed the test data back to the host computer. The host computer obtains and displays the test data measured by the casing tensile testing device, thereby realizing an effective test of the deformation and tensile value of the drone casing after the load is applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the structure of a casing tensile testing device provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the exploded structure of a casing tensile testing device provided by an embodiment of the present invention;

[0023] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0024] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 5 for Figure 2 A partial enlarged view of point C in the middle;.

[0026] Figure 6 A schematic diagram of the structure of a mounting mechanism and a driving mechanism of a casing tensile testing device provided in an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the exploded structure of the mounting mechanism and the driving mechanism of the casing tensile testing device provided by an embodiment of the present invention;

[0028] Figure 8 A logical structure diagram of a casing tensile testing system provided by an embodiment of the present invention;

[0029] Fig. 9 A logical structure diagram of the host computer of the casing tensile test system provided by an embodiment of the present invention;

[0030] Among them, the reference numerals in the figure are:

[0031] 10—frame 11—fixed slot 20—support mechanism

[0032] 21 - cross beam 22 - longitudinal beam 23 - fixed seat

[0033] 24—Connection assembly 25—Connection plate 26—Sliding groove

[0034] 27 - first lifting rod 28 - second lifting rod 30 - load measuring device

[0035] 31 - device body 32 - mounting mechanism 33 - rack

[0036] 34 - fixed beam 35 - load-bearing beam 36 - assembly frame

[0037] 37 - sensor 38 - drive mechanism 39 - monitoring module

[0038] 40—UAV 50—Casing tensile test system

[0039] 51—host computer 52—casing tension test device 221—movable bolt

[0040] 222—spring washer 223—fixing sheet 224—assembly groove

[0041] 271 - fixing plate 272 - handle bolt 281 - universal joint

[0042] 282 - guide bar 331 - first vertical rod 332 - second vertical rod

[0043] 333 - lateral fixing rod 334 - hinge 381 - gantry

[0044] 382 - drive motor 383 - transmission assembly 384 - screw rod

[0045] 385—driving nut 386—digital displacement scale 387—guide slider

[0046] 388 - guide rod 389 - fixed frame 511 - test item establishment module

[0047] 512 —test control module 513 —data acquisition module. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1 to 9The described embodiments are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0049] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] like Figures 1 to 3 As shown, an embodiment of the present invention provides a tensile testing device for the casing of a drone 40, including a frame 10, a support mechanism 20 and a load measuring device 30, wherein the support mechanism 20 includes two cross beams 21 and two longitudinal beams 22, wherein the two cross beams 21 are both arranged on the frame 10, and the two longitudinal beams 22 are both arranged on the two cross beams 21 and can move along the length direction of the two cross beams 21, and the longitudinal beams 22 are provided with at least one fixing seat 23 for connecting with the rotor arm of the drone 40, and the fixing seat 23 can move along the length direction of the longitudinal beam 22, so that the fixing seat 23 cooperates with the two longitudinal beams 22 to realize the flexible adjustment of the installation position of the rotor arm of the drone 40 by the support mechanism 20 in the lateral and / or longitudinal direction, so that the support mechanism can adapt to drones 40 of different specifications and sizes such as quad-rotors, hexa-rotors or octa-rotors, and the load measuring device 30 is arranged in the frame 10, and is used to connect with the casing of the drone 40 to test the ultimate tensile load and deformation of the casing.

[0053] The following is a further description of the tensile testing device for the casing of the drone 40 provided in the embodiment of the present invention: The tensile testing device for the casing of the drone 40 provided in the embodiment of the present invention, when testing the tensile force and deformation of the casing of the drone 40, the casing of the drone 40 is fixed on the two longitudinal beams 22 of the support mechanism 20, and the load measuring device 30 arranged in the frame 10 is connected to the casing and applies tensile force to the casing. In this process, the load measuring device 30 can obtain the ultimate tensile load of the casing and the deformation amount generated by the casing when subjected to tensile force. Since in the support mechanism 20, the two longitudinal beams 22 are arranged on the two cross beams 21, and the two longitudinal beams 22 can move along the length direction of the two cross beams 21, and the fixing seats 23 arranged on the two longitudinal beams 22 can move along the length direction of the longitudinal beams 22, so that the fixed position of the support mechanism 20 relative to the rotor arm of the drone can be flexibly adjusted and changed in the horizontal and / or longitudinal directions, so that no matter what the specifications, dimensions and wheelbase of the drone 40 are, it can always find a suitable assembly position between the two longitudinal beams 22. The number of the fixing seats 23 can be selected according to the number of rotors of the UAV, so that the support mechanism 20 can fix UAVs of various specifications and sizes such as quad-rotors, hexa-rotors or octa-rotors. In this way, the UAV 40 casing tensile testing device provided by the embodiment of the present invention can effectively support the acquisition of the ultimate tensile load and deformation of casings of different specifications, wheelbases and sizes.

[0054] In other embodiments of the present invention, Figure 4 As shown, two connecting components 24 are arranged on the cross beam 21, and both connecting components 24 can move along the length direction of the cross beam 21, and are respectively connected to the two longitudinal beams 22. The connecting component 24 includes a locking nut, a locking bolt and a connecting plate 25. The cross beam 21 is provided with a sliding groove 26 along its length direction. The locking bolt is slidably arranged in the sliding groove 26 and passes through the connecting plate 25. The locking nut and the locking bolt pass through one end of the connecting plate 25 and are screwed together. The connecting plate 25 is connected to the corresponding longitudinal beam 22.

[0055] Specifically, by providing a locking nut, a locking bolt and a connecting plate 25, when it is necessary to move the connecting component 24 along the length direction of the beam 21, it is only necessary to loosen the threaded locking degree of the locking nut and the locking bolt, so that the locking bolt can slide freely in the sliding groove 26. In this way, the connecting component 24 can drive the longitudinal beam 22 to move along the length direction of the beam 21 conveniently and quickly. When the connecting component 24 moves to a specified position in the length direction of the beam 21, the locking nut is locked to the locking bolt, thereby ensuring the stability of the connecting component 24 on the beam 21, thereby also ensuring the stable installation of the longitudinal beam 22 relative to the beam 21.

[0056] In other embodiments of the present invention, Figures 1 to 3 and Figure 5As shown, the support mechanism 20 further includes at least one first lifting rod 27 and at least one second lifting rod 28, which are respectively arranged on opposite sides of the frame 10 and can move along the height direction of the frame 10, and the first lifting rod 27 and the second lifting rod 28 are respectively connected to the two longitudinal beams 22. A universal joint 281 is arranged at the upper end of each first lifting rod 27 and each second lifting rod 28, and each universal joint 281 is connected to the corresponding cross beam 21.

[0057] Specifically, by setting the first lifting rod 27 and the second lifting rod 28, when it is necessary to simulate the stress state of the casing when the drone 40 is tilted forward and backward in flight, each first lifting rod 27 or each second lifting rod 28 can be moved to a specified position along the height direction of the frame 10, so that each first lifting rod 27 or each second lifting rod 28 can drive the corresponding crossbeam 21 to rise, so that the longitudinal beam 22 connected to the crossbeam 21 can present a tilted posture, thereby driving the casing of the drone 40 to tilt forward and backward, so as to realize the simulation of the forward and backward tilted flight posture of the drone 40.

[0058] When it is necessary to simulate the stress state of the casing of the drone 40 when it is tilted left and right, the first lifting rod 27 and the second lifting rod 28 on the same side can be moved to a specified position along the height direction of the frame 10, so that the first lifting rod 27 and the second lifting rod 28 can drive the corresponding crossbeam 21 to tilt, and then the two longitudinal beams 22 connected to the crossbeam 21 present a height difference, thereby driving the casing of the drone 40 to tilt left and right, so as to realize the simulation of the left and right tilting flight posture of the drone 40.

[0059] Optionally, the rack 10 is provided with guide grooves at positions corresponding to the first lifting rods 27 and the second lifting rods 28, and a guide bar 282 is provided on one side of the first lifting rods 27 and the second lifting rods 28 facing the corresponding guide grooves, and the guide bar 282 is slidably disposed in the corresponding guide grooves. In this way, the sliding accuracy of the first lifting rods 27 and the second lifting rods 28 relative to the rack 10 can be improved.

[0060] Optionally, each first lifting rod 27 and each second lifting rod 28 are provided with a fixing plate 271, and the fixing plate 271 is passed through the handle bolt 272, and the handle bolt 272 abuts against the frame 10 to achieve the position limitation of each first lifting rod 27 and each second lifting rod 28 relative to the frame 10. In this way, through the abutment and cooperation between the handle bolt 272 and the frame 10, the effective position limitation of each first lifting rod 27 and each second lifting rod 28 relative to the frame 10 is simply and reliably achieved.

[0061] Optionally, a fixing groove 11 may be provided at a position of the frame 10 corresponding to the handle bolt 272 along its height direction, and the handle bolt 272 is inserted into the fixing groove 11 , thereby improving the stability of the abutment between the handle bolt 272 and the frame 10 .

[0062] Optionally, the support mechanism 20 further includes a spring washer 222, a movable bolt 221 and a fixing plate 223. The longitudinal beam 22 is provided with an assembly groove 224 along its length direction. The movable bolt 221 is movably arranged in the assembly groove 224 and passes through the fixing plate 223. The spring washer 222 is arranged at one end of the movable bolt 221 passing through the fixing plate 223. The fixing seat 23 is connected to one end of the movable bolt 221 passing through the fixing plate 223 and abuts against the spring washer 222. In this way, due to the existence of the spring washer 222, when the first lifting rod 27 or the second lifting rod 28 drives the cross beam 21 to move. When the posture of the UAV 40 changes, the movable bolt 221 can generate circumferential swing around its axis under the action of the spring washer 222. Then the fixing seat 23 connected with the movable bolt 221 also realizes a movable connection with the longitudinal beam 22, so that it has a certain movable space relative to the longitudinal beam 22, and the rotor arm connected with the fixing seat 23 will not generate torque due to the change of the posture of the UAV 40, thereby ensuring the safety of the rotor arm during the tension load test.

[0063] In other embodiments of the present invention, Figure 1 , Figure 2 and Figure 6 As shown, the load measuring device 30 includes a device body 31 and a mounting mechanism 32. The device body 31 is disposed in the frame 10. The lower end of the mounting mechanism 32 is connected to the device body 31, and the upper end of the mounting mechanism 32 is used to be connected to the casing.

[0064] Specifically, by setting up the mounting mechanism 32, the mounting mechanism 32 can simulate the loads such as cameras, camcorders and packages mounted on the casing when it is in use, and by adjusting the weight of the mounting mechanism 32, loads of different weights mounted on the casing can also be simulated. This improves the authenticity and flexibility of the simulation of the load borne by the casing when in use, thereby also improving the authenticity and objectivity of the casing limit load data and deformation amount measured by the load measuring device 30.

[0065] In other embodiments of the present invention, Figure 6 and Figure 7 As shown, the mounting mechanism 32 includes a mounting bracket 33, two fixed beams 34 and two load-bearing beams 35 for connecting to the casing. The mounting bracket 33 and the device body 31 are hingedly connected. The two fixed beams 34 are spaced apart on the mounting bracket 33. The two load-bearing beams 35 are connected between the two fixed beams 34 and can move along the length direction of the two fixed beams 34.

[0066] Specifically, by connecting the two load-bearing beams 35 between the two fixed beams 34 and enabling them to move along the length direction of the two fixed beams 34, flexible adjustment of the distance between the two load-bearing beams 35 is achieved, and thus flexible adjustment of the installation position of the two load-bearing beams 35 relative to the casing is also achieved. In this way, the mounting mechanism 32 can adapt to casings of different specifications and sizes, thereby further improving the adaptability of the UAV 40 casing tensile testing equipment to casings of different specifications, wheelbases and sizes.

[0067] By hingedly connecting the bracket 33 and the device body 31, when the bracket 33 is tilted following the casing, the force direction of the device body 31 can always remain stable. In this way, no matter how the posture of the casing changes, the device body 31 can always accurately simulate the direction of gravity acting on the casing and apply load force, thereby further improving the authenticity and accuracy of the casing limit load data and deformation amount measured by the load measuring device 30.

[0068] Optionally, the hanger 33 includes a first vertical rod 331, a second vertical rod 332 and a transverse fixing rod 333, the transverse fixing rod 333 is connected between the first vertical rod 331 and the second vertical rod 332, and can move along the height direction of the first vertical rod 331 and the second vertical rod 332, and the lower end surface of the transverse fixing rod 333 is provided with a hinge 334 for being hinged to the device body 31. In this way, by making the transverse fixing rod 333 move along the height direction of the first vertical rod 331 and the second vertical rod 332, the vertical distance of the device body 31 relative to the center of gravity of the housing is effectively adjusted, thereby simulating the situation of the housing lifting goods.

[0069] In other embodiments of the present invention, Figure 6 and Figure 7 As shown, the device body 31 includes an assembly frame 36, a sensor 37 for detecting tensile load and deformation, a driving mechanism 38 and a monitoring module 39. The assembly frame 36 is arranged in the frame 10 and can move in the frame 10 in the horizontal direction and / or in the longitudinal direction. The driving mechanism 38 is arranged on the assembly frame 36. The sensor 37 is connected to the driving mechanism 38 and is hingedly connected to the hanger 33, specifically to the hinge 334. The monitoring module 39 is arranged on the frame 10 and is electrically connected to the sensor 37 to obtain the load and deformation data measured by the sensor 37. Specifically, the sensor 37 can obtain the load data and deformation data borne by the casing in real time when the driving mechanism 38 applies force, and transmit the data back to the monitoring module 39.

[0070] By setting the assembly frame 36 in the frame 10 and enabling it to move in the frame 10 in the horizontal and / or vertical direction, when the casing is tilted and its center of gravity moves, the assembly frame 36 can be adjusted in the horizontal and / or vertical direction in the frame 10, so that the driving mechanism 38 set in the assembly frame 36 and the center of gravity of the casing are on the same vertical line, thereby ensuring that the force application point of the driving mechanism 38 corresponds to the center of gravity of the casing, so that the working conditions of the gravity load on the casing in various flight postures of the unmanned aerial vehicle 40 can be objectively and truly reflected, thereby further improving the accuracy of the casing limit load data and deformation amount measured by the load measuring device 30.

[0071] In other embodiments of the present invention, Figure 7 As shown, the driving mechanism 38 includes a gantry 381, a driving motor 382 and a transmission assembly 383. The driving motor 382 is arranged in the assembly frame 36, and the driving end of the driving motor 382 is connected to the gantry 381 through the transmission assembly 383, and the sensor 37 is connected to the gantry 381. Among them, the transmission assembly 383 can be a screw 384 transmission assembly 383, a gear transmission assembly 383 or a belt transmission assembly 383, etc.

[0072] Specifically, by setting the drive motor 382 in the assembly frame 36, the drive motor 382 can move laterally and / or longitudinally in the frame 10 along with the assembly frame 36 to achieve alignment with the center of gravity of the casing, and the drive motor 382 can drive the gantry 381 to move up and down, and finally load the force on the casing through the sensor 37 and the mounting mechanism 32.

[0073] Optionally, the driving mechanism 38 further includes a fixing frame 389, the fixing frame 389 is fixed on the assembly frame 36, the driving motor 382 is connected to the fixing frame 389, the transmission assembly 383 is arranged in the fixing frame 389, and the arms on opposite sides of the gantry 381 are located on both sides of the fixing frame 389 and connected to the transmission assembly 383. By providing the fixing frame 389, on the one hand, the driving motor 382 is stably installed in the assembly frame 36, and on the other hand, the transmission assembly 383 is effectively protected.

[0074] In other embodiments of the present invention, Figure 7As shown, the transmission assembly 383 includes a screw rod 384 and a drive nut 385, the screw rod 384 is connected to the drive shaft of the drive motor 382, ​​and the drive nut 385 is screwed with the screw rod 384 and connected to the gantry 381. Specifically, by making the transmission assembly 383 include the screw rod 384 and the drive nut 385, when the drive shaft of the drive motor 382 rotates, the screw rod can rotate together, and then the drive nut 385 drives the gantry 381 to move up and down along the axial direction of the screw rod 384, thereby realizing the output of the driving force of the drive motor 382.

[0075] Optionally, the driving mechanism 38 also includes a guide rod 388 and a guide slider 387 sleeved on the guide rod 388. The guide rod 388 is arranged in the fixed frame 389 along the axial direction of the screw rod 384. The guide slider 387 is connected to the driving nut 385 to play a guiding role when the driving nut 385 moves along the screw rod 384.

[0076] In other embodiments of the present invention, as shown in the figure, a digital displacement scale 386 for displaying the displacement of the gantry 381 is provided on the gantry 381. Specifically, by providing the digital displacement scale 386, the operator can intuitively obtain the displacement of the gantry 381, thereby converting the magnitude of the driving force applied by the driving motor 382, ​​which is conducive to the operator's accurate control of the load applied by the driving mechanism 38 to the housing.

[0077] Optionally, the digital displacement scale 386 can be electrically connected to the monitoring module 39, which has a display for displaying the displacement and a display for displaying the tensile load or compressive load and deformation amount of the casing. The operator can intuitively obtain the tensile load or compressive load data of the casing, the deformation amount data, and the displacement data of the gantry by reading the parameters displayed on the above display.

[0078] like Figure 8 As shown, the embodiment of the present invention further provides a casing tensile testing system 50, comprising:

[0079] The host computer 51 is used to establish a test item task of the casing of the drone according to the user's input information, and the test item task includes a deformation test item and a tension test item;

[0080] The host computer 51 determines the execution mode of the deformation test item and the tension test item according to the user's input information, and the execution mode includes immediate execution and timed execution;

[0081] A casing tensile testing device 52, which is mounted under the casing of the UAV and is used to perform tensile testing items and deformation test items on the casing of the UAV after determining the execution mode;

[0082] After the casing tensile testing device 52 completes the testing of the deformation test item and / or the tensile test item, the host computer 51 obtains and displays the test data measured by the casing tensile testing device 52 .

[0083] Specifically, the deformation variable test item includes measurement: when the deformation variable is a fixed value, monitoring and obtaining the tension value as time changes. The tension test item includes measurement: when the tension is a fixed value (unstable), monitoring the deformation variable value as time changes. Because in actual measurement, the tension is not stable and will not remain constant at a fixed value, it is necessary to continuously measure the deformation variable value. The tension test item also includes measurement: when the tension is a fixed value (stable), monitoring the deformation variable value as time changes. At this time, the stability of the tension can be maintained by setting the lower computer (PLC industrial control unit).

[0084] The casing tensile testing system 50 provided by the embodiment of the present invention, when running, the host computer 51 can first establish the test tasks of the deformation test items and the tensile test items of the casing of the drone, and determine the immediate execution mode or the timed execution mode of the deformation test items and the tensile test items. After that, the casing tensile testing device 52 can test the deformation and tensile value of the drone casing under the applied load according to the above-mentioned test tasks and execution mode information, and feed back the test data to the host computer 51. The host computer 51 obtains and displays the test data measured by the casing tensile testing device 52, thereby realizing the effective test of the deformation and tensile value of the drone casing after the load is applied.

[0085] In another embodiment of the present application, the host computer 51 determines the number of tests, test duration, data recording time point for each test and monitoring interval duration for each test of the deformation test items and the tension test items according to the user's input information, and the casing tension testing device 52 performs deformation test and tension test on the casing of the drone according to the number of tests, test duration, data recording time point for each test and monitoring interval duration for each test.

[0086] Specifically, by setting the number of tests and the test duration, multiple sets of data can be measured, thereby ensuring the objectivity of the measurement results. By setting the data recording time point and the monitoring interval duration, the accuracy of the test results is ensured.

[0087] Alternatively, if Fig. 9As shown, the host computer 51 is a computer that directly issues control commands, which may include a test item establishment module 511, a test control module 512 and a data acquisition module 513. Among them, the test item establishment module 511 is used to establish test item tasks such as deformation test items and tension test items according to the user's input information. The test control module 512 is used to determine the execution mode and test times, test duration, data recording time point during each test, and monitoring interval duration during each test of the deformation test items and tension test items. The data acquisition module 513 is used to obtain test data such as deformation and tension values ​​measured by the casing tension test device 52.

[0088] Optionally, the host computer 51 may be provided with a display module for displaying a task list, etc., to display all task items of the system, such as detailed information of each test item, operating status, and total operating status, etc. The display module may also integrate function buttons such as deleting tasks, exporting tasks, querying tasks, and ending tasks in the task list.

[0089] Taking the query task as an example, the user can select the task name, test times (or cycle, which can be set as a sub-task item under the task name) in the task list and click the query task button to query the relevant variable values ​​of the task. Taking the export task as an example, the user can select the task item to be exported in the task list and click the export button to export the relevant task item information to the value table.

[0090] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A casing tensile testing device, characterized in that: The invention comprises a frame, a supporting mechanism and a load measuring device, wherein the supporting mechanism comprises two cross beams and two longitudinal beams, wherein the two cross beams are both arranged on the frame, the two longitudinal beams are both arranged on the two cross beams and can move along the length direction of the two cross beams, the longitudinal beams are provided with at least one fixing seat for connecting with the rotor arm of the UAV, and the fixing seat can move along the length direction of the longitudinal beams, the load measuring device is arranged in the frame and is used to connect with the casing of the UAV to test the ultimate tensile load and deformation of the casing, the load measuring device comprises a device body and a mounting mechanism, and the device body is arranged on the In the frame, the lower end of the mounting mechanism is connected to the device body, and the upper end of the mounting mechanism is used to connect to the casing. The mounting mechanism includes a mounting bracket, two fixed beams and two load-bearing beams used to connect to the casing. The mounting bracket and the device body are hingedly connected, and the two fixed beams are arranged on the mounting bracket at intervals. The two load-bearing beams are connected between the two fixed beams and can move along the length direction of the two fixed beams. The device body includes an assembly frame, a sensor for detecting tensile load and deformation, a driving mechanism and a monitoring module. The monitoring module has a display for displaying the tensile load and deformation of the casing.

2. The casing tensile testing device according to claim 1, characterized in that: Two connecting components are arranged on the cross beam, and both connecting components can move along the length direction of the cross beam and are respectively connected to the two longitudinal beams.

3. The casing tensile testing device according to claim 2, characterized in that: The connecting assembly includes a locking nut, a locking bolt and a connecting plate. The crossbeam is provided with a sliding groove along its length direction. The locking bolt is slidably arranged in the sliding groove and passes through the connecting plate. The locking nut and the locking bolt are threadedly engaged with one end passing through the connecting plate, and the connecting plate is connected to the corresponding longitudinal beam.

4. The casing tensile testing device according to claim 3, characterized in that: The support mechanism also includes at least one first lifting rod and at least one second lifting rod, the first lifting rod and the second lifting rod are respectively arranged on opposite sides of the frame and can move along the height direction of the frame, and the first lifting rod and the second lifting rod are respectively connected to the two beams.

5. The casing tensile testing device according to claim 1, characterized in that: The assembly frame is arranged in the frame and can move in the frame in the horizontal and / or longitudinal direction. The driving mechanism is arranged on the assembly frame. The sensor is connected to the driving mechanism and is hingedly connected to the bracket. The monitoring module is arranged on the frame and is electrically connected to the sensor to obtain the load and deformation data measured by the sensor.

6. The casing tensile testing device according to claim 5, characterized in that: The driving mechanism comprises a gantry, a driving motor and a transmission assembly. The driving motor is arranged in the assembly frame, and the driving end of the driving motor is connected to the gantry through the transmission assembly. The sensor is connected to the gantry.

7. A casing tensile testing system, characterized in that: include: The host computer is used to establish a test item task of the casing of the drone according to the user's input information, wherein the test item task includes a deformation test item and a tension test item; The host computer determines the execution mode of the deformation test item and the tension test item according to the user's input information, and the execution mode includes immediate execution and scheduled execution; The casing tensile testing device according to any one of claims 1 to 6, wherein the casing tensile testing device is mounted under the casing of the drone and is used to perform the tensile test item and the deformation test item on the casing of the drone after determining the execution mode; After the casing tensile test device completes testing of the deformation test item and / or the tensile test item, the host computer acquires and displays test data measured by the casing tensile test device.

8. The casing tensile testing system according to claim 7, characterized in that: The host computer determines the number of tests, test duration, data recording time point for each test and monitoring interval duration for the deformation test item and the tension test item based on the user's input information, and the casing tension test device performs deformation test and tension test on the casing of the drone based on the number of tests, test duration, data recording time point for each test and monitoring interval duration for each test.

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