Tire test master loading device and method

Abstract

The present application relates to the technical fields of aerospace tire testing, in particular to a tire testing main loading device and method thereof, comprising a mounting frame, a loading head mounted on the mounting frame, a main loading mechanism and a yaw mechanism, and a roll mechanism for driving the mounting frame to drive the loading head, the main loading mechanism and the yaw mechanism to swing, the loading head is used for mounting the tire to be tested, the loading head is drivingly connected with the main loading mechanism, the main loading mechanism is used for driving the loading head to move up and down, and the yaw mechanism is used for driving the loading head to rotate horizontally; the present application solves the technical problems of large load and high acceleration tire testing of the aerospace tire, can realize accurate evaluation of the mechanical properties, dynamic operation, brake response, friction coefficient and other characteristics of the aerospace tire, realizes multi-channel large load cooperative loading and coupling control, and can simulate the test of different postures of the aircraft tire.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerospace tire test, in particular to a tire test main loading device and method thereof. BACKGROUND

[0002] In order to ensure the safety of the aircraft tire in use, the aircraft tire needs to simulate the complex mechanical environment under the extreme working conditions such as aircraft catapult take-off, ski-jump take-off, landing, side tilt, deviation, aborted take-off, etc., so that the large load, high acceleration tire test, tire wear test, tire braking and other tire characteristic tests need to be carried out during the research and production process of the aircraft tire.

[0003] Due to the difficulty in solving the large load, high acceleration tire test technology of the aircraft tire, the accurate evaluation of the mechanical properties, dynamic operation, braking response, friction coefficient and other characteristics of the aircraft tire cannot be realized, and it is not convenient to provide test means for the research of new synthetic rubber materials and other natural rubber tire characteristics. SUMMARY

[0004] The present application provides a tire test main loading device and method thereof, which solves the problem of large load, high acceleration tire test technology of the aircraft tire, realizes the accurate evaluation of the mechanical properties, dynamic operation, friction coefficient and other characteristics of the aircraft tire, realizes the multi-channel large load cooperative loading and coupling control, and can simulate the test of different attitudes of the aircraft tire.

[0005] In order to solve the above technical problems, the present application adopts the following technical scheme:

[0006] The present application provides a tire test main loading device, which comprises a mounting frame, a loading head mounted on the mounting frame, a main loading mechanism and a deviation mechanism, and a side tilt mechanism for driving the mounting frame to swing the loading head, the main loading mechanism and the deviation mechanism, the loading head is used for mounting the tire to be tested, the loading head is drivingly connected with the main loading mechanism, the main loading mechanism is used for driving the loading head to move up and down, and the deviation mechanism is used for driving the loading head to rotate horizontally.

[0007] The side tilt mechanism comprises a side tilt frame and a side tilt driving mechanism, the side tilt driving mechanism is connected to the side tilt frame, the side tilt driving mechanism is drivingly connected with the mounting frame, and the side tilt driving mechanism is used for driving the mounting frame to swing so as to swing the loading head.

[0008] The side tilt mechanism further comprises a side tilt locking assembly, the side tilt locking assembly comprises a side tilt separation plate, a connecting plate mounted on the mounting frame, a locking piece for locking the side tilt separation plate to the connecting plate, and a fixing piece for locking the side tilt separation plate to the side tilt frame.

[0009] When in the locked state, the locking member releases the locking of the roll separation plate and the connecting plate, and the fixing member locks the roll frame and the roll separation plate; and the roll separation plate is attached to the roll frame.

[0010] When the roll needs to be adjusted from the locked state, the fixing member releases the locking of the roll frame and the roll separation plate, and the locking member locks the roll separation plate and the connecting plate; a gap is formed between the roll separation plate and the roll frame, and the roll separation plate is attached to the connecting plate.

[0011] The roll locking assembly further comprises a roll guide column, the roll separation plate is provided with a roll fitting hole, the roll guide column extends into the roll fitting hole and fits with the roll fitting hole, the roll frame is provided with a roll guide hole, the locking member and the roll guide column can pass through the roll guide hole, and the roll guide column moves along the roll guide hole when the mounting frame swings.

[0012] The roll frame is provided with a plurality of roll locking holes, and the roll separation plate is provided with a plurality of separation locking holes; the fixing member passes through the roll locking holes and the separation locking holes to lock the roll frame and the roll separation plate.

[0013] The roll locking assembly further comprises a detection switch connected to the connecting plate, and the detection switch is used to detect the gap between the roll separation plate and the connecting plate before the mounting frame swings.

[0014] The tire test main loading device further comprises a loading adjustment mechanism connected to the loading head.

[0015] The loading adjustment mechanism comprises a loading adjustment frame, a loading adjustment driving mechanism, a loading locking assembly, and an adjustment pad, the loading adjustment frame is drivingly connected to the main loading mechanism, the loading adjustment driving mechanism is used to adjust the space between the loading adjustment frame and the loading head, so as to increase or reduce the mounting adjustment pad;

[0016] The loading locking assembly is used to lock the loading adjustment frame, the adjustment pad, and the loading head, so as to eliminate the gap between the loading adjustment frame, the adjustment pad, and the loading head.

[0017] The tire test main loading device further comprises a force measuring platform, the input end of the force measuring platform is drivingly connected to the main loading mechanism, and the output end of the force measuring platform is drivingly connected to the loading adjustment frame.

[0018] The loading adjustment driving mechanism comprises a loading screw threadedly connected to the loading head and a screw rotation driving unit drivingly connected to the loading screw, the screw rotation driving unit is mounted on the loading adjustment frame, and the screw rotation driving unit drives the loading screw to rotate, so that the loading head moves up and down.

[0019] The adjusting pad has a pad mounting groove and a pad positioning part on each of its two opposite sides. The loading head has a loading mounting groove. The pad positioning part is installed in conjunction with the loading mounting groove. Two adjacent adjusting pads are installed by the pad mounting groove and the pad positioning part cooperating. The loading adjusting frame has an adjusting frame mounting groove. An adjusting frame mounting block is detachably installed in the adjusting frame mounting groove. The adjusting frame mounting block is installed in conjunction with the pad mounting groove.

[0020] The yaw mechanism includes a yaw mounting frame slidably connected to the mounting frame, a yaw drive mechanism mounted on the yaw mounting frame, and a yaw rotating body drivenly connected to the yaw drive mechanism. The yaw rotating body is drivenly connected to the loading head and to the main loading mechanism. The main loading mechanism is mounted on the mounting frame and is used to drive the yaw rotating body to move up and down.

[0021] The yaw rotating body is rotatably connected to the yaw mounting frame, and the yaw drive mechanism is used to drive the yaw rotating body to rotate horizontally.

[0022] The yaw mounting bracket is provided with a first mounting slot and a second mounting slot, and both the first mounting slot and the second mounting slot are provided with bearings. The yaw rotating body is mounted in the first mounting slot and the second mounting slot through the bearings.

[0023] The yaw drive mechanism includes a rotating body drive unit and a yaw limiting body that is driven and connected to the rotating body drive unit. The yaw limiting body is connected to the yaw rotating body.

[0024] The yaw drive mechanism further includes a yaw connecting plate connected to the yaw mounting bracket. The yaw connecting plate is equipped with a first yaw limit block and a second yaw limit block. The yaw limit body moves within the stroke range between the first yaw limit block and the second yaw limit block. The first yaw limit block and the second yaw limit block are used to limit the yaw limit body.

[0025] The tire testing main loading device also includes a main loading locking mechanism for locking the mounting bracket and the yaw mounting bracket;

[0026] The main loading locking mechanism includes a locking drive component mounted on the yaw mounting bracket and a locking support component driven and connected to the locking drive component. The mounting bracket is provided with a main loading locking groove, which cooperates with the locking support component. When the main loading mechanism is not working, the locking drive component drives the locking support component to extend into the main loading locking groove, so that the main loading locking mechanism supports and locks the yaw mounting bracket.

[0027] The mounting bracket is connected to a protective mounting component, and the yaw mounting bracket is connected to a main loading limit component. The main loading mechanism drives the yaw rotating body to move so that when the yaw mounting bracket moves to the end of its stroke, the main loading limit component abuts against the protective mounting component.

[0028] The present invention also provides a method for primary loading in tire testing, comprising the following steps:

[0029] S01. The tire to be tested is mounted on the loading head;

[0030] S02. When the tire to be tested is loaded, the main loading mechanism drives the yaw rotating body, the force measuring platform, the yaw mounting frame, the loading adjustment mechanism and the loading head to move downward relative to the mounting frame. The main loading mechanism transmits the pressure to the force measuring platform, the loading adjustment mechanism and the loading head in sequence through the yaw rotating body, thereby applying a load to the tire to be tested on the loading head for loading experiment.

[0031] S03. When performing a yaw test on the tire to be tested, the yaw drive mechanism set on the yaw mounting frame drives the yaw rotating body to rotate. The yaw rotating body drives the force measuring platform, the loading adjustment mechanism and the loading head to rotate, thereby causing the tire to be tested on the loading head to rotate, so as to perform the yaw test.

[0032] S04. When performing a roll test on the tire under test, the roll drive mechanism installed on the roll frame drives the mounting frame to swing. The mounting frame drives the main loading mechanism, yaw rotating body, force measuring platform, yaw mounting frame, loading adjustment mechanism and loading head to swing, thereby causing the tire under test to swing in order to perform the roll test.

[0033] In steps S02, S03 and S04, the force measuring platform measures the applied forces in the loading test, yaw test and roll test, so as to measure and control the applied forces and the forces on the tire under test.

[0034] In step S01, when it is necessary to replace the test tire with a different model, the loading adjustment drive mechanism of the loading adjustment mechanism adjusts the installation space between the loading adjustment frame and the loading head, and increases or decreases the number of adjustment pads in the installation space to change the overall height of the loading adjustment mechanism, so that the loading head can adapt to the installation of different models of test tires.

[0035] The beneficial effects of this invention are:

[0036] Through the main loading mechanism, yaw mechanism, and roll mechanism, multi-channel large load collaborative loading and coupled control are achieved, enabling simulation tests of aircraft tires in different attitudes. This tire testing main loading device is used to simulate the complex mechanical environment of aircraft tires under extreme conditions such as catapult takeoff, ski-jump takeoff, carrier landing, roll, yaw, and aborted takeoff. It allows for accurate evaluation of the mechanical and dynamic characteristics of aircraft tires, solving the technical challenges of high-load, high-acceleration tire testing in China, filling the gap in domestic high-acceleration tire testing technology, providing accurate testing methods for the research of new synthetic rubber materials and other natural rubber tire properties, providing technical support for the establishment of domestic aircraft tire design, verification, and testing standards, and making a significant contribution to the national aircraft tire engineering project. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the main loading device for this tire test.

[0038] Figure 2 This is a schematic diagram of the exploded structure of the tilting mechanism.

[0039] Figure 3 This is an exploded structural diagram of the tilt locking assembly.

[0040] Figure 4 This is a sectional view of the structure when the tilting frame and mounting bracket are locked.

[0041] Figure 5 This is a three-dimensional structural diagram of the loading adjustment mechanism and the tire under test.

[0042] Figure 6 This is an exploded structural diagram of a load adjustment frame, a force measuring platform, and a main loading mechanism.

[0043] Figure 7 This is an exploded structural diagram of a load adjustment drive mechanism, a load head, and a load adjustment frame.

[0044] Figure 8 This is an exploded structural diagram of the loading adjustment frame, adjustment pad, loading head, and loading locking assembly.

[0045] Figure 9 This is an exploded front view of the structure including the loading adjustment frame, adjustment pad, loading head, and adjustment frame mounting block.

[0046] Figure 10 This is a structural sectional view of the mounting frame and yaw mechanism.

[0047] Figure 11 This is a three-dimensional structural diagram of the yaw mechanism.

[0048] Figure 12A three-dimensional structural diagram showing the separation of the yaw mounting bracket and the yaw connector.

[0049] Figure 13 This is an exploded structural diagram of the yaw drive mechanism and the yaw rotating body.

[0050] Figure 14 This is a schematic diagram of the installation structure of the yaw drive mechanism and the yaw connection plate.

[0051] Figure 15 A three-dimensional structural diagram showing the separation of the mounting bracket and the yaw mounting bracket.

[0052] 01. The tire to be tested;

[0053] 100. Mounting bracket; 1001. Main loading locking groove; 1002. Mounting protective components;

[0054] 1. Loading header; 101. Loading installation slot;

[0055] 2. Main loading mechanism; 21. Main loading locking mechanism; 211. Locking drive component;

[0056] 212. Locking support part; 231. Locking load drive part; 232. Locking support part;

[0057] 3. Yaw mechanism;

[0058] 31. Yaw mounting bracket; 311. First mounting slot; 312. Second mounting slot;

[0059] 313. Bearings; 314. Main loading limit components;

[0060] 32. Yaw drive mechanism; 321. Rotating body drive unit; 322. Yaw limiter;

[0061] 323. Yaw connecting plate; 324. Yaw first limit block; 325. Yaw second limit block; 33. Yaw rotating body;

[0062] 4. Tilting mechanism;

[0063] 41. Tilt bracket; 411. Tilt guide hole; 412. Tilt locking hole;

[0064] 42. Tilting drive mechanism; 43. Tilting locking assembly;

[0065] 431. Side tilt separation plate; 4311. Side tilt mating hole; 4312. Separation locking hole;

[0066] 432. Connecting plate; 433. Locking component; 434. Fixing component; 435. Tilt guide post; 436. Detection switch;

[0067] 5. Load the adjustment mechanism;

[0068] 51. Loading adjustment frame; 511. Adjustment frame mounting slot; 512. Adjustment frame mounting block;

[0069] 52. Load and adjust the drive mechanism;

[0070] 521. Loading screw; 522. Screw rotation drive unit;

[0071] 53. Load the locking assembly; 54. Adjust the pad;

[0072] 541. Pad mounting groove; 542. Pad positioning part;

[0073] 6. Force measuring platform. Detailed Implementation

[0074] To facilitate understanding by those skilled in the art, the present invention will be further described below in conjunction with embodiments and accompanying drawings. Specific embodiments of the present invention will be described below. It should be noted that, in order to provide a concise description of these embodiments, this specification cannot provide a detailed description of all features of the actual embodiments.

[0075] refer to Figures 1 to 15 As shown, the present invention provides a tire testing main loading device, including a mounting frame 100, a loading head 1 mounted on the mounting frame 100, a main loading mechanism 2 and a yaw mechanism 3, and a tilting mechanism 4 for driving the mounting frame 100 to swing the loading head 1, the main loading mechanism 2 and the yaw mechanism 3. The loading head 1 is used to mount the tire 01 to be tested. The loading head 1 is drivenly connected to the main loading mechanism 2. The main loading mechanism 2 is used to drive the loading head 1 to move up and down. The yaw mechanism 3 is used to drive the loading head 1 to rotate horizontally.

[0076] refer to Figures 1 to 2As shown, in practical applications, the tire under test 01 is an aircraft tire. The tire under test 01 is mounted on the loading head 1. Corresponding pressure and temperature sensors are installed on the tire under test 01 to monitor its pressure and temperature in real time. The main loading mechanism 2 drives the loading head 1 to move up and down, thereby reducing or increasing the longitudinal load on the tire under test 01 and controlling the vertical pressure on the tire under test 01. This simulates the pressure on the tire under test 01 during aircraft landing, making it close to the working conditions of aircraft tires in actual operation, thus achieving the loading test on the tire under test 01. A yaw mechanism 3 is used... The loading head 1 is driven to rotate horizontally, resulting in a yaw control angle of -45° to 45° and a control rate of 5° to 20° / s. The yaw mechanism 3 and the main loading mechanism 2 can be used separately to test the aircraft tire 01 under pressure or yaw conditions. Alternatively, the yaw mechanism 3 and the main loading mechanism 2 can be used simultaneously to simulate aircraft landing with the aircraft tire in a yaw state, satisfying the simulation test requirements for different aircraft tire attitudes and improving the testing accuracy of the tire 01. A tilting mechanism 4 drives the mounting bracket 100 to move the loading head 1, the main loading mechanism 2, and the yaw mechanism 3. The oscillation mechanism causes the test tire 01 to oscillate back and forth, with a roll control angle of -20° to 20° and a control rate of 5° / s, thus achieving the roll test of the test tire 01. Through the main loading mechanism 2, yaw mechanism 3, and roll mechanism 4, multi-channel large load collaborative loading and coupling control are achieved to simulate different roll angles of aircraft tires during takeoff, different roll angles of the aircraft fuselage during landing, and different roll angles and yaws of aircraft during land taxiing and turning. This tire test main loading device is used to simulate aircraft catapult takeoff, ski-jump takeoff, carrier landing, roll, yaw, and abort. The test bench can accurately evaluate the mechanical, dynamic, braking response, and friction coefficient characteristics of aircraft tires under extreme conditions such as takeoff and other extreme conditions. It solves the technical problems of high-load and high-acceleration tire testing in China, fills the gap in high-acceleration testing technology for aircraft tires in China, provides accurate testing methods for the research on the characteristics of new synthetic rubber materials and other natural rubber tires, and provides technical support for the establishment of domestic standards for aircraft tire design, verification, and testing. The test bench has already conducted thousands of tire tests and will make an important contribution to solving the national aircraft tire project.

[0077] refer to Figure 2 As shown, in this embodiment, the tilting mechanism 4 includes a tilting frame 41 and a tilting drive mechanism 42. The tilting drive mechanism 42 is connected to the tilting frame 41 and is drivenly connected to the mounting frame 100. The tilting drive mechanism 42 is used to drive the mounting frame 100 to swing, so that the loading head 1 swings.

[0078] In practical applications, the mounting bracket 100 is driven to swing by the tilt drive mechanism 42, which in turn drives the loading head 1, the main loading mechanism 2 and the yaw mechanism 3 to swing, so that the tire under test 01 swings, simulating the tilt test of an aircraft tire. Specifically, the tilt drive mechanism 42 can be a hydraulic cylinder.

[0079] refer to Figure 2 , 3 As shown in Figure 4, in this embodiment, the tilt mechanism 4 further includes a tilt locking assembly 43, which includes a tilt separation plate 431, a connecting plate 432 mounted on the mounting bracket 100, a locking member 433 for locking the tilt separation plate 431 to the connecting plate 432, and a fixing member 434 for locking the tilt separation plate 431 to the tilt frame 41.

[0080] refer to Figure 2 As shown, in practical applications, the tilt locking assembly 43 can be set into two sets, which are respectively connected to the two ends of the swing center of the mounting frame 100 to improve the connection stability of the mounting frame 100. When it is necessary to lock the tilt frame 41 and the tilt separation plate 431, the locking of the tilt separation plate 431 and the connecting plate 432 is first released by the locking member 433, and then the fixing member 434 is used to lock the tilt frame 41 and the tilt separation plate 431, so that the tilt separation plate 431 is in contact with the tilt frame 41.

[0081] refer to Figure 4 As shown, the gap between the roll separation plate 431 and the roll frame 41 is successfully eliminated, making the roll separation plate 431 and the roll frame 41 tightly connected. The mounting bracket 100 is stably locked to the roll frame 41 by the roll separation plate 431, preventing the mounting bracket 100 and the roll frame 41 from shaking and improving the locking stability of the mounting bracket 100. When it is necessary to start the adjustment from the locked state, first release the lock between the roll frame 41 and the roll separation plate 431 by the fastener 434, and then use the locking element 433. Locking the tilt separation plate 431 and the connecting plate 432 together creates a gap between the tilt separation plate 431 and the tilt frame 41, and makes the tilt separation plate 431 fit against the connecting plate 432. By changing the position of the tilt separation plate 431, a space is provided between the mounting frame 100 and the tilt frame 41 to allow for smooth swinging, preventing friction between the tilt frame 41 and the mounting frame 100 during the tilting process, reducing the impact of friction on the tilting process, and ensuring the accuracy of the tilting test.

[0082] refer to Figure 2 , 3As shown in Figure 4, in this embodiment, the tilt locking assembly 43 further includes a tilt guide post 435. The tilt separation plate 431 is provided with a tilt mating hole 4311. The tilt guide post 435 extends into the tilt mating hole 4311 and mates with the tilt mating hole 4311. The tilt frame 41 is provided with a tilt guide hole 411. Both the locking member 433 and the tilt guide post 435 can pass through the tilt guide hole 411. When the mounting frame 100 tilts and swings, the tilt guide post 435 moves along the tilt guide hole 411, smoothly guiding the tilt of the mounting frame 100.

[0083] refer to Figure 3 , 4 As shown, in this embodiment, the tilt frame 41 is provided with a plurality of tilt locking holes 412, and the tilt separation plate 431 is provided with a plurality of separation locking holes 4312. The fixing member 434 passes through the tilt locking holes 412 and the separation locking holes 4312 to lock the tilt frame 41 and the tilt separation plate 431. The tilt locking assembly 43 also includes a detection switch 436, which is connected to the connecting plate 432. The detection switch 436 is used to detect the gap between the tilt separation plate 431 and the connecting plate 432 before the mounting frame 100 tilts. When the detection switch 436 detects that there is no gap between the tilt separation plate 431 and the connecting plate 432, it indicates that the fixing member 434 has released the locking of the tilt frame 41 and the tilt separation plate 431, and the locking member 433 has locked the tilt separation plate 431 and the connecting plate 432 to prevent the tilt frame 41 and the tilt separation plate 431 from being locked in a locked state. If there is no gap between the tilt separation plate 431 and the tilt frame 41, friction will occur between the tilt separation plate 431 and the tilt frame 41, which could cause the equipment to be damaged by force or fail to start, making the operation of the equipment more reliable.

[0084] refer to Figure 5 As shown, in this embodiment, the main loading device for tire testing further includes a loading adjustment mechanism 5, which is connected to the loading head 1. The loading adjustment mechanism 5 includes a loading adjustment frame 51, a loading adjustment drive mechanism 52, a loading locking assembly 53, and an adjusting pad 54. The loading adjustment frame 51 is drivenly connected to the main loading mechanism 2. The loading adjustment drive mechanism 52 is used to adjust the space between the loading adjustment frame 51 and the loading head 1 to increase or decrease the installation of the adjusting pad 54. The loading locking assembly 53 is used to lock the loading adjustment frame 51, the adjusting pad 54, and the loading head 1 to eliminate the gap between them.

[0085] refer to Figure 7 and Figure 8As shown, in practical applications, the installation space between the loading adjustment frame 51 and the loading head 1 is adjusted by the loading adjustment drive mechanism 52, thereby adjusting the number of adjustment pads 54 installed in the installation space, and thus adjusting the installation height of the loading head 1 to accommodate the installation of tires 01 of different sizes and models. The loading locking assembly 53 is used to lock the loading adjustment frame 51, one or more adjustment pads 54 and the loading head 1 to eliminate the gap between the loading adjustment frame 51, the adjustment pads 54 and the loading head 1, so as to make its structure stable and facilitate the transmission of force.

[0086] refer to Figure 6 As shown, in this embodiment, the main loading device for tire testing also includes a force measuring platform 6. The input end of the force measuring platform 6 is driven and connected to the main loading mechanism 2; the output end of the force measuring platform 6 is driven and connected to the loading adjustment frame 51. In practical applications, the main loading mechanism 2 uses a hydraulic cylinder. The main loading mechanism 2 drives the force measuring platform 6, the loading adjustment frame 51, and the loading head 1 to move up and down, thereby increasing or decreasing the load on the tire under test 01. The force measuring platform 6 measures the load applied by the main loading mechanism 2. The force measuring platform 6 can use a three-component force sensor or a six-component force sensor. Specifically, a protective cover can be installed between the force measuring platform 6 and the loading head 1 to isolate the loading head 1 and the force measuring platform 6, preventing residue generated during the loading test from splashing onto the force measuring platform 6, thus ensuring experimental safety.

[0087] In this embodiment, the loading locking assembly 53 uses screws and nuts, and multiple screws and nuts are used to lock the loading adjustment frame 51, one or more adjustment pads 54 and loading head 1 to eliminate the gap between the loading adjustment frame 51, adjustment pads 54 and loading head 1.

[0088] refer to Figure 7 As shown, in this embodiment, the loading adjustment drive mechanism 52 includes a loading screw 521 threadedly connected to the loading head 1 and a screw rotation drive unit 522 driven by the loading screw 521. The screw rotation drive unit 522 is mounted on the loading adjustment frame 51, and drives the loading screw 521 to rotate, thereby causing the loading head 1 to move up and down. In this embodiment, the screw rotation drive unit 522 can be a motor or a worm gear reducer mechanism driven by a handwheel, which drives the loading screw 521 to rotate.

[0089] refer to Figure 9As shown, in this embodiment, the two opposite sides of the adjusting pad 54 are respectively provided with pad mounting grooves 541 and pad positioning parts 542. The loading head 1 is provided with a loading mounting groove 101. The pad positioning part 542 is installed in conjunction with the loading mounting groove 101. Two adjacent adjusting pads 54 are installed by the pad mounting groove 541 and the pad positioning part 542. The loading adjusting frame 51 is provided with an adjusting frame mounting groove 511. An adjusting frame mounting block 512 is detachably installed in the adjusting frame mounting groove 511. The adjusting frame mounting block 512 is installed in conjunction with the pad mounting groove 541, which makes it convenient to install one or more adjusting pads 54, the loading head 1 and the loading adjusting frame 51. The structure adopts an inlay connection structure of protrusions and grooves, which is stable and eliminates gaps between them, and facilitates the transmission of force.

[0090] refer to Figure 10 , 11 As shown, in this embodiment, the yaw mechanism 3 includes a yaw mounting frame 31 slidably connected to the mounting frame 100, a yaw drive mechanism 32 mounted on the yaw mounting frame 31, and a yaw rotating body 33 drivenly connected to the yaw drive mechanism 32. The yaw rotating body 33 is drivenly connected to the loading head 1 and to the main loading mechanism 2. The main loading mechanism 2 is mounted on the mounting frame 100 and is used to drive the yaw rotating body 33 to move up and down. The yaw rotating body 33 is rotatably connected to the yaw mounting frame 31, and the yaw drive mechanism 32 is used to drive the yaw rotating body 33 to rotate horizontally. (Reference) Figure 11 As shown, in practical applications, the yaw rotating body 33 is connected to the input end of the force measuring platform 6, so that the output end of the force measuring platform 6 is connected to the loading adjustment mechanism 5. When a yaw test is performed, the yaw rotating body 33 is driven to rotate by the yaw drive mechanism 32, and the force measuring platform 6 is used to obtain the force condition of the tire under test 01 in the yaw test, simulating the working condition of the aircraft tire in a yaw state.

[0091] refer to Figure 12 As shown, in this embodiment, the yaw mounting bracket 31 is provided with a first mounting groove 311 and a second mounting groove 312. Both the first mounting groove 311 and the second mounting groove 312 are provided with bearings 313. The yaw rotating body 33 is mounted on the first mounting groove 311 and the second mounting groove 312 through the bearings 313, so that the yaw rotating body 33 rotates smoothly.

[0092] refer to Figure 13 and Figure 14As shown, in this embodiment, the yaw drive mechanism 32 includes a rotating body drive unit 321 and a yaw limiting body 322 driven and connected to the rotating body drive unit 321. The yaw limiting body 322 is connected to the yaw rotating body 33. The yaw drive mechanism 32 also includes a yaw connecting plate 323 connected to the yaw mounting bracket 31. The yaw connecting plate 323 is equipped with a first yaw limiting block 324 and a second yaw limiting block 325. The yaw limiting body 322 moves within the stroke range between the first yaw limiting block 324 and the second yaw limiting block 325. The first yaw limiting block 324 and the second yaw limiting block 325 are used to limit the yaw limiting body 322.

[0093] The yaw mechanism 3 described herein is ingeniously designed with a yaw rotating body 33 rotatably mounted on a yaw mounting frame 31. A yaw drive mechanism 32 is mounted on the yaw mounting frame 31, and a yaw limiter 322 is connected to the yaw rotating body 33 to limit the yaw angle. This enables the main loading mechanism 2 to drive the entire structure to slide relative to the mounting frame 100 for loading, while simultaneously enabling the yaw drive mechanism 32 to drive the yaw rotating body 33 to rotate, thereby driving the test tire 01 on the loading head 1 to rotate for the yaw experiment.

[0094] refer to Figure 15 As shown, in this embodiment, the tire testing main loading device further includes a main loading locking mechanism 21 for locking the mounting bracket 100 and the yaw mounting bracket 31. The main loading locking mechanism 21 includes a locking drive member 211 mounted on the yaw mounting bracket 31 and a locking support part 212 drivenly connected to the locking drive member 211. The mounting bracket 100 is provided with a main loading locking groove 1001, which cooperates with the locking support part 212. When the main loading mechanism 2 is not working, the locking drive member 211 drives the locking support part 212 to extend into the main loading locking groove 1001, so that the main loading locking mechanism 21 supports and locks the yaw mounting bracket 31, thereby preventing the main loading mechanism 2 from being under constant force.

[0095] refer to Figure 10 and Figure 15 As shown, in practical applications, the main loading mechanism 2 drives the loading head 1 to move up and down to reduce or increase the longitudinal load on the tire 01 under test. The main loading mechanism 2 can be implemented using a hydraulic cylinder. In this embodiment, the main loading locking groove 1001 is a groove, and multiple main loading locking grooves 1001 are provided and evenly distributed along the stroke direction of the main loading mechanism 2, which can provide several locking positions for the tire 01 under test to meet the testing requirements of tires 01 at different heights. In this embodiment, the locking drive component 211 can be a pneumatic cylinder, hydraulic cylinder, or electric cylinder, etc.

[0096] refer to Figure 15As shown, in this embodiment, the mounting bracket 100 is connected to the mounting protective component 1002, and the yaw mounting bracket 31 is connected to the main loading limit component 314. The main loading mechanism 2 drives the yaw rotating body 33 to move so that when the yaw mounting bracket 31 moves to the end of its stroke, the main loading limit component 314 abuts against the mounting protective component 1002, thereby limiting the stroke of the mounting bracket 100 and allowing it to move up and down within its stroke to ensure the safe operation of the equipment.

[0097] refer to Figures 1-15 As shown, the present invention also provides a tire testing main loading method, comprising the following steps:

[0098] S01, the tire to be tested 01 is installed on the loading head 1;

[0099] S02. When the load is applied to the tire 01 to be tested, the main loading mechanism 2 drives the yaw rotating body 33, the force measuring platform 6, the yaw mounting frame 31, the loading adjustment mechanism 5 and the loading head 1 to move downward relative to the mounting frame 100. The main loading mechanism 2 transmits the pressure to the force measuring platform 6, the loading adjustment mechanism 5 and the loading head 1 in sequence through the yaw rotating body 33, thereby applying a load to the tire 01 to be tested on the loading head 1 to carry out the loading experiment.

[0100] S03. When performing a yaw test on the tire 01 to be tested, the yaw drive mechanism 32 set on the yaw mounting frame 31 drives the yaw rotating body 33 to rotate. The yaw rotating body 33 drives the force measuring platform 6, the loading adjustment mechanism 5 and the loading head 1 to rotate, thereby causing the tire 01 to be tested on the loading head 1 to rotate, so as to perform the yaw test.

[0101] S04. When performing a roll test on the tire 01 to be tested, the roll drive mechanism 42 installed on the roll frame 41 drives the drive mounting frame 100 to swing. The mounting frame 100 drives the main loading mechanism 2, the yaw rotating body 33, the force measuring platform 6, the yaw mounting frame 31, the loading adjustment mechanism 5 and the loading head 1 to swing, thereby causing the tire 01 to be tested on the loading head 1 to swing in order to perform a roll test.

[0102] In steps S02, S03 and S04, the force measuring platform 6 measures the applied forces in the loading test, yaw test and roll test, so as to measure and control the applied forces and the forces on the tire 01 under test in the test.

[0103] In step S01, when it is necessary to replace the test tire 01 with a different model, the loading adjustment drive mechanism 52 of the loading adjustment mechanism 5 adjusts the installation space between the loading adjustment frame 51 and the loading head 1, and increases or decreases the number of adjustment pads 54 in the installation space to change the overall height of the loading adjustment mechanism 5, so that the loading head 1 can adapt to the installation of different models of test tires 01.

[0104] This tire testing main loading method, through the main loading mechanism 2, yaw mechanism 3, and roll mechanism 4, achieves multi-channel large load collaborative loading and coupled control. It simulates different roll angles during aircraft tire takeoff, different roll angles during aircraft tire landing, and different roll angles and yaws during aircraft taxiing and turning on land. The roll and yaw simulation control speed and range have reached internationally advanced levels. This independently developed tire testing main loading device is used to simulate the complex mechanical environment of aircraft tires under extreme conditions such as catapult takeoff, ski-jump takeoff, carrier landing, roll, yaw, and aborted takeoff. It can accurately evaluate the mechanical, dynamic operation, braking response, and friction coefficient characteristics of aircraft tires, solving the technical challenges of high-load, high-acceleration tire testing in China and filling the gap in domestic high-acceleration tire testing technology. It provides accurate testing methods for the research of new synthetic rubber materials and other natural rubber tire characteristics, and provides technical support for the establishment of domestic aircraft tire design, verification, and testing standards. The test bench has already conducted thousands of tire tests, making a significant contribution to solving the national aircraft tire engineering problem.

[0105] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A tire testing main loading device, characterized in that, The device includes a mounting frame (100), a loading head (1) mounted on the mounting frame (100), a main loading mechanism (2) and a yaw mechanism (3), and a tilting mechanism (4) for driving the mounting frame (100) to swing the loading head (1), the main loading mechanism (2) and the yaw mechanism (3). The loading head (1) is used to mount the tire (01) to be tested. The loading head (1) is driven to the main loading mechanism (2). The main loading mechanism (2) is used to drive the loading head (1) to move up and down. The yaw mechanism (3) is used to drive the loading head (1) to rotate horizontally. The tilting mechanism (4) includes a tilting frame (41) and a tilting drive mechanism (42). The tilting drive mechanism (42) is connected to the tilting frame (41) and is driven to the mounting frame (100). The tilting drive mechanism (42) is used to drive the mounting frame (100) to swing so that the loading head (1) swings. The tilt mechanism (4) further includes a tilt locking assembly (43), which includes a tilt separation plate (431), a connecting plate (432) mounted on the mounting bracket (100), a locking member (433) for locking the tilt separation plate (431) to the connecting plate (432), and a fixing member (434) for locking the tilt separation plate (431) to the tilt frame (41). The yaw mechanism (3) includes a yaw mounting bracket (31) slidably connected to the mounting bracket (100), a yaw drive mechanism (32) mounted on the yaw mounting bracket (31), and a yaw rotating body (33) drivenly connected to the yaw drive mechanism (32). The yaw rotating body (33) is drivenly connected to the loading head (1) and to the main loading mechanism (2). The main loading mechanism (2) is mounted on the mounting bracket (100). The yaw rotating body (33) is rotatably connected to the yaw mounting frame (31), and the yaw drive mechanism (32) is used to drive the yaw rotating body (33) to rotate horizontally; The yaw drive mechanism (32) includes a rotating body drive unit (321) and a yaw limiter (322) that is driven and connected to the rotating body drive unit (321). The yaw limiter (322) is connected to the yaw rotating body (33). The yaw drive mechanism (32) further includes a yaw connecting plate (323) connected to the yaw mounting bracket (31). The yaw connecting plate (323) is equipped with a first yaw limit block (324) and a second yaw limit block (325). The yaw limit body (322) moves within the travel range between the first yaw limit block (324) and the second yaw limit block (325). The first yaw limit block (324) and the second yaw limit block (325) are used to limit the yaw limit body (322).

2. The tire testing main loading device according to claim 1, characterized in that, When the roll separation plate (431) is locked to the roll frame (41), the locking member (433) releases the lock between the roll separation plate (431) and the connecting plate (432), and the fixing member (434) locks the roll frame (41) and the roll separation plate (431) together; and makes the roll separation plate (431) fit against the roll frame (41); When it is necessary to adjust the tilt from the locked state, the fixing member (434) releases the locking of the tilt frame (41) and the tilt separation plate (431), and the locking member (433) locks the tilt separation plate (431) and the connecting plate (432) together, so that there is a gap between the tilt separation plate (431) and the tilt frame (41), and so that the tilt separation plate (431) and the connecting plate (432) are in contact.

3. The tire testing main loading device according to claim 2, characterized in that, The tilt locking assembly (43) also includes a tilt guide post (435). The tilt separation plate (431) is provided with a tilt mating hole (4311). The tilt guide post (435) extends into the tilt mating hole (4311) and mates with the tilt mating hole (4311). The tilt frame (41) is provided with a tilt guide hole (411). Both the locking member (433) and the tilt guide post (435) can pass through the tilt guide hole (411). When the mounting frame (100) tilts, the tilt guide post (435) moves along the tilt guide hole (411).

4. The tire testing main loading device according to claim 3, characterized in that, The tilt frame (41) is provided with a plurality of tilt locking holes (412), the tilt separation plate (431) is provided with a plurality of separation locking holes (4312), and the fastener (434) passes through the tilt locking holes (412) and the separation locking holes (4312) to lock the tilt frame (41) and the tilt separation plate (431); The tilt locking assembly (43) also includes a detection switch (436) connected to the connecting plate (432). The detection switch (436) is used to detect the gap between the tilt separation plate (431) and the connecting plate (432) before the mounting bracket (100) tilts.

5. The tire testing main loading device according to claim 1, characterized in that, The tire test main loading device also includes a loading adjustment mechanism (5), which is connected to the loading head (1); The loading adjustment mechanism (5) includes a loading adjustment frame (51), a loading adjustment drive mechanism (52), a loading locking assembly (53), and an adjustment pad (54). The loading adjustment frame (51) is driven to connect with the main loading mechanism (2). The loading adjustment drive mechanism (52) is used to adjust the space between the loading adjustment frame (51) and the loading head (1) to increase or decrease the installation adjustment pad (54). The loading locking assembly (53) is used to lock the loading adjustment frame (51), the adjustment pad (54) and the loading head (1) to eliminate the gap between the loading adjustment frame (51), the adjustment pad (54) and the loading head (1).

6. The tire testing main loading device according to claim 5, characterized in that, The tire test main loading device also includes a force measuring platform (6), the input end of which is driven to be connected to the main loading mechanism (2); the output end of which is driven to be connected to the loading adjustment frame (51).

7. The tire testing main loading device according to claim 5, characterized in that, The loading adjustment drive mechanism (52) includes a loading screw (521) threadedly connected to the loading head (1) and a screw rotation drive unit (522) driven by the loading screw (521). The screw rotation drive unit (522) is mounted on the loading adjustment frame (51). The screw rotation drive unit (522) drives the loading screw (521) to rotate so that the loading head (1) moves up and down.

8. The tire testing main loading device according to claim 5, characterized in that, The two opposite sides of the adjusting pad (54) are respectively provided with pad mounting groove (541) and pad positioning part (542). The loading head (1) is provided with loading mounting groove (101). The pad positioning part (542) is installed in cooperation with the loading mounting groove (101). Two adjacent adjusting pads (54) are installed in cooperation with the pad mounting groove (541) and the pad positioning part (542). The loading adjusting frame (51) is provided with adjusting frame mounting groove (511). An adjusting frame mounting block (512) is detachably installed in the adjusting frame mounting groove (511). The adjusting frame mounting block (512) is installed in cooperation with the pad mounting groove (541).

9. The tire testing main loading device according to claim 1, characterized in that, The yaw mounting bracket (31) is provided with a first mounting slot (311) and a second mounting slot (312). Both the first mounting slot (311) and the second mounting slot (312) are provided with bearings (313). The yaw rotating body (33) is mounted in the first mounting slot (311) and the second mounting slot (312) through the bearings (313).

10. The tire testing main loading device according to claim 1, characterized in that, The tire testing main loading device also includes a main loading locking mechanism (21) for locking the mounting bracket (100) and the yaw mounting bracket (31). The main loading locking mechanism (21) includes a locking drive (211) mounted on the yaw mounting bracket (31) and a locking support (212) drivenly connected to the locking drive (211). The mounting bracket (100) is provided with a main loading locking groove (1001). When the main loading mechanism (2) is not working, the locking drive (211) drives the locking support (212) to extend into the main loading locking groove (1001) so that the main loading locking mechanism (21) supports and locks the yaw mounting bracket (31).

11. The tire testing main loading device according to claim 1, characterized in that, The mounting bracket (100) is connected to the mounting guard (1002), the yaw mounting bracket (31) is connected to the main loading limiter (314), and the main loading mechanism (2) drives the yaw rotating body (33) to move so that when the yaw mounting bracket (31) moves to the end of its stroke, the main loading limiter (314) abuts against the mounting guard (1002).

12. A tire testing main loading method, comprising the tire testing main loading device according to any one of claims 1 to 11, characterized in that, Includes the following steps: S01, The tire to be tested (01) is installed on the loading head (1); S02. When the load is applied to the tire (01) to be tested, the main loading mechanism (2) drives the yaw rotating body (33), the force measuring platform (6), the yaw mounting frame (31), the loading adjustment mechanism (5) and the loading head (1) to move downward relative to the mounting frame (100). The main loading mechanism (2) transmits the pressure through the yaw rotating body (33) to the force measuring platform (6), the loading adjustment mechanism (5) and the loading head (1) in sequence, thereby applying a load to the tire (01) to be tested on the loading head (1) to carry out the loading experiment. S03. When the tire (01) to be tested is subjected to a yaw test, the yaw drive mechanism (32) set on the yaw mounting frame (31) drives the yaw rotating body (33) to rotate. The yaw rotating body (33) drives the force measuring platform (6), the loading adjustment mechanism (5) and the loading head (1) to rotate, thereby causing the tire (01) to be tested on the loading head (1) to rotate, so as to carry out the yaw test. S04. When the tire (01) to be tested is subjected to a roll test, the roll drive mechanism (42) installed on the roll frame (41) drives the mounting frame (100) to swing. The mounting frame (100) drives the main loading mechanism (2), yaw rotating body (33), force measuring platform (6), yaw mounting frame (31), loading adjustment mechanism (5) and loading head (1) to swing, thereby causing the tire (01) to be tested on the loading head (1) to swing, so as to perform a roll test. In steps S02, S03 and S04, the force measuring platform (6) measures the applied forces in the loading test, yaw test and roll test, so as to measure and control the applied forces and the forces on the tire (01) under test. In step S01, when it is necessary to replace the test tire (01) with a different model, The loading adjustment drive mechanism (52) of the loading adjustment mechanism (5) adjusts the installation space of the loading adjustment frame (51) and the loading head (1), and changes the overall height of the loading adjustment mechanism (5) by increasing or decreasing the number of adjustment pads (54) in the installation space, so that the loading head (1) can be adapted to the installation of different types of tires (01) to be tested.

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