Tire test main loading device and method thereof

Abstract

The invention relates to the technical field of aerospace tire testing, in particular to a tire testing main loading device and method, and the device comprises a mounting rack, a loading head, a main loading mechanism and a yaw mechanism which are mounted on the mounting rack, and a side tilting mechanism which is used for driving the mounting rack to drive the loading head, the main loading mechanism and the yaw mechanism to swing. The loading head is used for installing a tire to be tested, the loading head is in driving connection 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; according to the invention, the technical problem of large-load and high-acceleration aircraft tire test is solved, accurate evaluation of aircraft tire mechanics, dynamic operation, brake response, friction coefficient and other characteristics can be realized, multi-channel large-load cooperative loading and coupling control are realized, and simulation tests can be carried out on different attitudes of aircraft tires.

Description

Technical Field

[0001] The invention relates to the technical field of aerospace tire testing, and in particular to a tire testing main loading device and method thereof. Background Art

[0002] In order to ensure the safety of aircraft tires during use, aircraft tires need to simulate complex mechanical environments under extreme operating conditions such as aircraft catapult takeoff, ski-jump takeoff, landing, roll, yaw, and aborted takeoff. Therefore, during the research and development and production process, aircraft tires need to undergo large-load, high-acceleration tire dynamic characteristics tests, tire wear performance tests, tire braking, and other tire characteristics tests.

[0003] Since it is difficult to solve the problem of high-load and high-acceleration tire testing technology for aviation tires, it is impossible to accurately evaluate the mechanical, dynamic operation, braking response, friction coefficient and other characteristics of aviation tires, which makes it inconvenient to provide testing means for the research on the characteristics of new synthetic rubber materials and other natural rubber tires. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a main loading device and method for tire testing, which solves the technical difficulties in large-load and high-acceleration tire testing of aircraft tires, can accurately evaluate the mechanics, dynamic operation, friction coefficient and other characteristics of aircraft tires, realize multi-channel large-load collaborative loading and coupling control, and can perform simulation tests on different postures of aircraft tires.

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

[0006] The present invention provides a main loading device for tire testing, comprising a mounting frame, a loading head mounted on the mounting frame, a main loading mechanism and a yaw mechanism, and a roll mechanism used for driving the mounting frame to drive the loading head, the main loading mechanism and the yaw mechanism to swing, wherein the loading head is used for mounting a tire to be tested, the loading head is drivingly connected to 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.

[0007] The roll mechanism comprises a roll frame and a roll drive mechanism, wherein the roll drive mechanism is connected to the roll frame, the roll drive mechanism is drive-connected to the mounting frame, and the roll drive mechanism is used to drive the mounting frame to swing so as to make the loading head swing.

[0008] Wherein, the roll mechanism further includes a roll locking assembly, which includes a roll separation plate, a connecting plate mounted on the mounting frame, a locking member for locking the roll separation plate to the connecting plate, and a fixing member for locking the roll separation plate to the roll 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 makes the roll separation plate fit with the roll frame;

[0010] When roll adjustment is required from a locked state, the fixing member releases the lock between the roll frame and the roll separation plate, and the locking member locks the roll separation plate and the connecting plate, so that a gap exists between the roll separation plate and the roll frame, and the roll separation plate and the connecting plate are fitted together.

[0011] Among them, the roll locking assembly also includes a roll guide column, the roll separation plate is provided with a roll matching hole, the roll guide column extends into the roll matching hole and matches with the roll matching hole, the roll frame is provided with a roll guide hole, the locking piece and the roll guide column can both pass through the roll guide hole, and when the mounting frame tilts and swings, the roll guide column moves along the roll guide hole.

[0012] Wherein, the roll frame is provided with a plurality of roll locking holes, the roll separation plate is provided with a plurality of separation locking holes, and the fixing member locks the roll frame and the roll separation plate after passing through the roll locking holes and the separation locking holes;

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

[0014] Wherein, the tire test main loading device further comprises a loading adjustment mechanism, and the loading adjustment mechanism is 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 decrease the installation of the adjustment pad.

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

[0017] Wherein, the tire test main loading device also includes a force measuring platform, the input end of the force measuring platform is drivingly connected to the main loading mechanism; the output end of the force measuring platform is drivingly connected to the loading adjustment frame.

[0018] Among them, the loading and adjustment driving mechanism includes 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 installed on the loading adjustment frame. The screw rotation driving unit drives the loading screw to rotate so that the loading head moves up and down.

[0019] Among them, a pad installation groove and a pad positioning portion are respectively arranged on two opposite sides of the adjusting pad, the loading head is provided with a loading installation groove, the pad positioning portion is installed in cooperation with the loading installation groove, two adjacent adjusting pads are installed by using the pad installation groove and the pad positioning portion to cooperate with each other, the loading adjustment frame is provided with an adjustment frame installation groove, an adjustment frame installation block is detachably installed in the adjustment frame installation groove, and the adjustment frame installation block is installed in cooperation with the pad installation groove.

[0020] The yaw mechanism comprises a yaw mounting frame slidably connected to the mounting frame, a yaw drive mechanism installed on the yaw mounting frame, and a yaw rotating body drivingly connected to the yaw drive mechanism, the yaw rotating body is drivingly connected to the loading head, the yaw rotating body is drivingly connected to the main loading mechanism, the main loading mechanism is installed on the mounting frame, and the main loading mechanism 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 driving mechanism is used for driving the yaw rotating body to rotate horizontally.

[0022] The yaw mounting frame is provided with a first mounting groove and a second mounting groove, the first mounting groove and the second mounting groove are both provided with bearings, and the yaw rotating body is installed in the first mounting groove and the second mounting groove through the bearings.

[0023] Wherein, the yaw drive mechanism comprises a rotating body driving unit, and a yaw limiter drivingly connected to the rotating body driving unit, and the yaw limiter is connected to the yaw rotating body;

[0024] The yaw drive mechanism also includes a yaw connecting plate connected to the yaw mounting frame, the yaw connecting plate is installed with a first yaw limit block and a second yaw limit block, the yaw limit body is located and moves within a travel range between the first yaw limit block and the second yaw limit block, and the first yaw limit block and the second yaw limit block are used to limit the yaw limit body.

[0025] Wherein, the tire test main loading device also includes a main loading locking mechanism for locking the mounting frame and the yaw mounting frame;

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

[0027] The mounting frame is connected to a mounting guard, the yaw mounting frame is connected to a main loading limiter, and the main loading mechanism drives the yaw rotating body to move so that the main loading limiter abuts against the mounting guard when the yaw mounting frame moves to the end of the stroke.

[0028] The present invention also provides a tire test main loading method, comprising the following steps:

[0029] S01, the tire to be tested is installed on the loading head;

[0030] S02. When applying a load to the tire to be tested, 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, and 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 to perform a loading experiment;

[0031] S03. When performing a yaw test on the tire to be tested, the yaw driving mechanism disposed on the yaw mounting frame drives the yaw rotating body to rotate, and the yaw rotating body drives the force measuring platform, the loading adjustment mechanism and the loading head to rotate, so that the tire to be tested of the loading head rotates to perform the yaw test;

[0032] S04. When the roll test is performed on the tire to be tested, the roll drive mechanism installed on the roll frame drives the mounting frame to swing, and the mounting frame drives the main loading mechanism, the yaw rotating body, the force measuring platform, the yaw mounting frame, the loading adjustment mechanism and the loading head to swing, so that the tire to be tested on the loading head swings to perform the roll test;

[0033] In the step S02, step S03 and step S04, the force measuring platform measures the applied force in the loading test, the yaw test and the roll test, so as to measure and control the applied force in the test and the force on the tire to be tested;

[0034] In step S01, when it is necessary to replace the tire to be tested with a different model, the loading adjustment driving 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 tires to be tested.

[0035] Beneficial effects of the present invention:

[0036] Through the main loading mechanism, yaw mechanism and roll mechanism, multi-channel large load coordinated loading and coupling control are realized, and simulation tests can be performed on aircraft tires in different postures. Through this tire test main loading device, which is used to simulate the complex mechanical environment of aircraft tires under extreme working conditions such as aircraft catapult takeoff, ski jump takeoff, landing, roll, yaw, and aborted takeoff, it can achieve accurate evaluation of the mechanical and dynamic operation characteristics of aircraft tires, solve the technical difficulties of large load and high acceleration tire testing of domestic aircraft tires, fill the gap in domestic high acceleration test technology of aircraft tires, provide accurate test methods for the study of the characteristics of new synthetic rubber materials and other natural rubber tires, and provide technical support for the establishment of domestic aircraft tire design, verification and test inspection standards, and make important contributions to solving national aviation tire engineering. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0038] Figure 2 Schematic diagram of the exploded structure of the roll mechanism.

[0039] Figure 3 Schematic diagram of the exploded structure of the roll lock assembly.

[0040] Figure 4 It is a structural cross-sectional view when the roll frame and the mounting frame are locked.

[0041] Figure 5 It is a schematic diagram of the three-dimensional structure of the loading adjustment mechanism and the tire to be tested.

[0042] Figure 6 It is a schematic diagram of the explosion structure with a loading adjustment frame, a force measuring platform and a main loading mechanism.

[0043] Figure 7 It is a schematic diagram of the exploded structure with a loading adjustment drive mechanism, a loading head and a loading adjustment frame.

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

[0045] Fig. 9 This is the exploded structure front view with loading adjustment frame, adjustment spacer, loading head and adjustment frame mounting block.

[0046] Fig.10 It is a structural cross-sectional view of the mounting frame and yaw mechanism.

[0047] Fig.11 It is a schematic diagram of the three-dimensional structure of the yaw mechanism.

[0048] Fig.12It is a schematic diagram of the three-dimensional structure in which the yaw mounting frame and the yaw connector are separated.

[0049] Fig.13 It is a schematic diagram of the explosion structure of the yaw drive mechanism and the yaw rotor.

[0050] Fig.14 It is a schematic diagram of the installation structure of the yaw drive mechanism and the yaw connecting plate.

[0051] Fig.15 It is a schematic diagram of the three-dimensional structure with the mounting frame and the yaw mounting frame separated.

[0052] 01. Tire to be tested;

[0053] 100. Mounting frame; 1001. Main loading locking groove; 1002. Mounting protective element;

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

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

[0056] 212, locking support portion; 231, locking carrier drive member; 232, locking support portion;

[0057] 3. Yaw mechanism;

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

[0059] 313, bearing; 314, main loading limiter;

[0060] 32. Yaw driving mechanism; 321. Rotating body driving unit; 322. Yaw limiting body;

[0061] 323, yaw connection plate; 324, yaw first limit block; 325, yaw second limit block; 33, yaw rotating body;

[0062] 4. Tilt mechanism;

[0063] 41, roll frame; 411, roll guide hole; 412, roll locking hole;

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

[0065] 431, roll separation plate; 4311, roll matching hole; 4312, separation locking hole;

[0066] 432, connecting plate; 433, locking member; 434, fixing member; 435, roll guide column; 436, detection switch;

[0067] 5. Loading adjustment mechanism;

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

[0069] 52. Loading and adjusting driving mechanism;

[0070] 521, loading screw; 522, screw rotation driving unit;

[0071] 53. Loading and locking assembly; 54. Adjusting pad;

[0072] 541, pad installation groove; 542, pad positioning portion;

[0073] 6. Force measuring platform. DETAILED DESCRIPTION

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

[0075] refer to Figures 1 to 15 As shown, the present invention provides a main loading device for tire testing, 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 roll mechanism 4 used to drive the mounting frame 100 to drive the loading head 1, the main loading mechanism 2 and the yaw mechanism 3 to swing, the loading head 1 is used to mount a tire 01 to be tested, the loading head 1 is drivingly 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, and the yaw mechanism 3 is used to drive the loading head 1 to rotate horizontally.

[0076] refer to Figure 1 to Figure 2As shown, in actual application, the tire 01 to be tested is an aircraft tire. The tire 01 to be tested is installed on the loading head 1. The corresponding pressure sensor and temperature sensor are installed on the tire 01 to detect the pressure and temperature of the tire 01 to be tested in real time. The main loading mechanism 2 is used to drive the loading head 1 to move up and down, so that the longitudinal load on the tire 01 to be tested is reduced or increased, and the vertical pressure of the tire 01 to be tested is controlled to simulate the pressure of the tire 01 to be tested when the aircraft lands, so as to make it close to the working condition of the aircraft tire on the aircraft during actual operation, so as to realize the loading test of the tire 01 to be tested; the yaw mechanism 3 is used The loading head 1 is driven to rotate horizontally, so that the yaw control angle is -45°~45°, and the control rate is 5°~20° / s. The yaw mechanism 3 and the main loading mechanism 2 can be used separately to test the working conditions of the aircraft tire 01 under pressure or yaw respectively; the yaw mechanism 3 and the main loading mechanism 2 can also be used at the same time to simulate the working conditions of the aircraft landing and the aircraft tire in the yaw state, meet the simulation test of different postures of the aircraft tire, and improve the test accuracy of the tire 01 to be tested; the roll mechanism 4 is used to drive the mounting frame 100 to drive the loading head 1, the main loading mechanism 2 and the yaw mechanism 3 Swing, drive the tire 01 to be tested to swing back and forth, the roll control angle is -20°~20°, the control rate is 5° / s, and the roll test of the tire 01 to be tested is realized. Through the main loading mechanism 2, the yaw mechanism 3 and the roll mechanism 4, multi-channel large load coordinated loading and coupling control are realized to simulate the different roll angles of the aircraft tire taking off, simulate the different roll angles of the fuselage when the aircraft tire lands, and simulate the different roll angles and yaws when the aircraft lands and turns. Through this tire test main loading device, the device is used to simulate the aircraft catapult takeoff, ski jump takeoff, landing, roll, yaw, and abort The complex mechanical environment of aviation tires under extreme working conditions such as takeoff can realize accurate evaluation of aviation tire mechanics, dynamic operation, braking response, friction coefficient and other characteristics, which solves the technical problems of large-load and high-acceleration tire testing of domestic aviation tires, fills the gap in high-acceleration testing technology of domestic aviation tires, and provides accurate testing means for the study of new synthetic rubber materials and other natural rubber tire characteristics. It provides technical support for the establishment of domestic aviation tire design, verification and test inspection standards. The test bench has currently carried out thousands of tire tests, which will make an important contribution to solving the national aviation tire engineering.

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

[0078] In actual application, the mounting frame 100 is driven to swing by the roll drive mechanism 42, so as to drive the loading head 1, the main loading mechanism 2 and the yaw mechanism 3 to swing, so as to make the tire 01 to be tested swing, simulating the roll test of the aviation tire. Specifically, the roll drive mechanism 42 can be a cylinder.

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

[0080] refer to Figure 2 As shown, in actual application, the roll locking assembly 43 can be set to two groups, 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 roll frame 41 and the roll separation plate 431, first release the lock of the roll separation plate 431 and the connecting plate 432 through the locking member 433, and then use the fixing member 434 to lock the roll frame 41 and the roll separation plate 431, and make the roll separation plate 431 fit with the roll frame 41.

[0081] refer to Figure 4 As shown, the gap between the roll separation plate 431 and the roll frame 41 is eliminated smoothly, so that the roll separation plate 431 is tightly connected to the roll frame 41, and the mounting frame 100 is stably locked on the roll frame 41 through the roll separation plate 431, so as to prevent the mounting frame 100 and the roll frame 41 from shaking, thereby improving the locking stability of the mounting frame 100; when it is necessary to start adjustment from the locked state, first release the locking of the roll frame 41 and the roll separation plate 431 through the fixing member 434, and then use the locking member 433 The roll separation plate 431 and the connecting plate 432 are locked so that there is a gap between the roll separation plate 431 and the roll frame 41, and the roll separation plate 431 and the connecting plate 432 are fitted together. By changing the position of the roll separation plate 431, a space for smooth swinging is provided between the mounting frame 100 and the roll frame 41, thereby preventing friction between the roll frame 41 and the mounting frame 100 during the roll process, reducing the influence of friction on the roll process, and ensuring the accuracy of the roll test.

[0082] refer to Figure 2 , 3As shown in Figure 4, in this embodiment, the roll locking assembly 43 also includes a roll guide column 435, the roll separation plate 431 is provided with a roll matching hole 4311, the roll guide column 435 extends into the roll matching hole 4311 and matches with the roll matching hole 4311, the roll frame 41 is provided with a roll guide hole 411, the locking member 433 and the roll guide column 435 can both pass through the roll guide hole 411, when the mounting frame 100 tilts and swings, the roll guide column 435 moves along the roll guide hole 411 to smoothly guide the roll of the mounting frame 100.

[0083] refer to Figure 3 , 4 As shown, in this embodiment, the roll frame 41 is provided with a plurality of roll locking holes 412, and the roll separation plate 431 is provided with a plurality of separation locking holes 4312. The fixing member 434 passes through the roll locking holes 412 and the separation locking holes 4312 to lock the roll frame 41 and the roll separation plate 431. The roll locking assembly 43 also includes a detection switch 436, and the detection switch 436 is connected to the connecting plate 432. The detection switch 436 is used to detect the gap between the roll separation plate 431 and the connecting plate 432 before the mounting frame 100 tilts and swings. When the detection switch 436 detects that there is no gap between the roll separation plate 431 and the connecting plate 432, it means that the fixing member 434 has released the lock of the roll frame 41 and the roll separation plate 431, and the locking member 433 locks the roll separation plate 431 and the connecting plate 432 to prevent the roll frame 41 and the roll separation plate 431 from being in a locked state, and there is no gap between the roll separation plate 431 and the roll frame 41, resulting in friction between the roll separation plate 431 and the roll frame 41, and forceful startup destroys the equipment, or fails to start, making the equipment operation more reliable.

[0084] refer to Figure 5 As shown, in this embodiment, 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 driving mechanism 52, a loading locking assembly 53 and an adjusting pad 54, the loading adjustment frame 51 is drivingly connected to the main loading mechanism 2, the loading adjustment driving mechanism 52 is used to adjust the space between the loading adjustment frame 51 and the loading head 1, so as 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, so as to eliminate the gap between the loading adjustment frame 51, the adjusting pad 54 and the loading head 1.

[0085] refer to Figure 7 and Figure 8As shown, in actual application, the installation space between the loading adjustment frame 51 and the loading head 1 is adjusted by the loading adjustment driving mechanism 52, thereby adjusting the number of adjustment pads 54 installed in the installation space, and then adjusting the installation height of the loading head 1 to adapt to the installation of tires 01 of different models and sizes to be tested; 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 the structure stable and facilitate the transmission of force.

[0086] refer to Figure 6 As shown, in this embodiment, the main loading device for the tire test also includes a force measuring platform 6, the input end of the force measuring platform 6 is drivingly connected to the main loading mechanism 2; the output end of the force measuring platform 6 is drivingly connected to the loading adjustment frame 51. In actual application, the main loading mechanism 2 adopts an oil cylinder, and 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, so as to increase or reduce the load on the tire 01 to be tested, and the load applied by the main loading mechanism 2 is measured by the force measuring platform 6. The force measuring platform 6 can adopt 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 facilitate the isolation of the loading head 1 and the force measuring platform 6, so as to avoid the residue generated in the loading test from splashing onto the force measuring platform 6, so as to ensure the safety of the experiment.

[0087] In this embodiment, the loading locking assembly 53 uses screws and nuts, and uses multiple screws and nuts 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.

[0088] refer to Figure 7 As shown, in this embodiment, the loading adjustment driving mechanism 52 includes a loading screw 521 threadedly connected to the loading head 1 and a screw rotation driving unit 522 drivingly connected to the loading screw 521, and the screw rotation driving unit 522 is installed on the loading adjustment frame 51, and the screw rotation driving unit 522 drives the loading screw 521 to rotate, so that the loading head 1 moves up and down. In this embodiment, the screw rotation driving unit 522 can be a motor, or a worm gear reducer mechanism that is shaken by a hand wheel, and the worm gear reducer mechanism drives the loading screw 521 to rotate.

[0089] refer to Fig. 9As shown, in this embodiment, a pad installation groove 541 and a pad positioning portion 542 are respectively provided on two opposite sides of the adjusting pad 54, the loading head 1 is provided with a loading installation groove 101, and the pad positioning portion 542 is installed in cooperation with the loading installation groove 101, and two adjacent adjusting pads 54 are installed by using the pad installation groove 541 and the pad positioning portion 542 to cooperate with each other, and the loading adjustment frame 51 is provided with an adjustment frame installation groove 511, and an adjustment frame installation block 512 is detachably installed in the adjustment frame installation groove 511, and the adjustment frame installation block 512 is installed in cooperation with the pad installation groove 541, so that one or more adjusting pads 54, the loading head 1 and the loading adjustment frame 51 are easy to install, and adopt an inlaid connection structure of protrusions and grooves, the structure is stable, and the gap between them is eliminated, which is convenient for force transmission.

[0090] refer to Fig.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 installed on the yaw mounting frame 31, and a yaw rotating body 33 drivingly connected to the yaw drive mechanism 32, the yaw rotating body 33 is drivingly connected to the loading head 1, the yaw rotating body 33 is drivingly connected to the main loading mechanism 2, the main loading mechanism 2 is installed on the mounting frame 100, and the main loading mechanism 2 is used to drive the yaw rotating body 33 to move up and down; the yaw rotating body 33 is rotationally 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. Fig.11 As shown, in actual application, the yaw rotor 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 the yaw test is performed, the yaw rotor 33 is driven to rotate by the yaw driving mechanism 32, and the force measuring platform 6 is used to obtain the force condition of the tire 01 to be tested in the yaw test, simulating the working condition of the aircraft tire in the yaw state.

[0091] refer to Fig.12 As shown, in this embodiment, the yaw mounting frame 31 is provided with a first mounting groove 311 and a second mounting groove 312, and the first mounting groove 311 and the second mounting groove 312 are both provided with bearings 313. The yaw rotating body 33 is installed in 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 Fig.13 and Fig.14As shown, in this embodiment, the yaw drive mechanism 32 includes a rotating body drive unit 321, and a yaw limit body 322 drivingly connected to the rotating body drive unit 321, and the yaw limit 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 frame 31, and the yaw connecting plate 323 is installed with a first yaw limit block 324 and a second yaw limit block 325, and the yaw limit body 322 is located and moves within a travel range between the first yaw limit block 324 and the second yaw limit block 325, and the first yaw limit block 324 and the second yaw limit block 325 are used to limit the yaw limit body 322.

[0093] The yaw mechanism 3 described herein is cleverly provided with a yaw rotating body 33 rotatably mounted on a yaw mounting frame 31, a yaw driving mechanism 32 is mounted on the yaw mounting frame 31, and a yaw limiting body 322 is adopted to be connected with the yaw rotating body 33, and the yaw angle is limited, so as to realize the loading effect of the main loading mechanism 2 driving the entire loading mechanism 2 to slide relative to the mounting frame 100, and at the same time realize the yaw driving mechanism 32 driving the yaw rotating body 33 to rotate, thereby driving the yaw experiment of rotating the tire 01 to be tested on the loading head 1.

[0094] refer to Fig.15 As shown, in this embodiment, the tire test main loading device also includes a main loading locking mechanism 21 for locking the mounting frame 100 and the yaw mounting frame 31; the main loading locking mechanism 21 includes a locking driving member 211 installed on the yaw mounting frame 31 and a locking support portion 212 driven and connected to the locking driving member 211, the mounting frame 100 is provided with a main loading locking groove 1001, the main loading locking groove 1001 cooperates with the locking support portion 212, when the main loading mechanism 2 is not working, the locking driving member 211 drives the locking support portion 212 to extend into the main loading locking groove 1001, so that the main loading locking mechanism 21 supports and locks the yaw mounting frame 31, so as to avoid the main loading mechanism 2 being subjected to force all the time.

[0095] refer to Fig.10 and Fig.15 As shown, in actual application, 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 to be tested. The main loading mechanism 2 can be implemented by a cylinder. In this embodiment, the main loading locking groove 1001 is a groove. There are multiple main loading locking grooves 1001 and they are evenly distributed along the stroke direction of the main loading mechanism 2, which can provide several locking positions for the tire 01 to be tested to meet the test requirements of the tire 01 to be tested at different heights. In this embodiment, the locking drive member 211 can be a cylinder, a cylinder, or an electric cylinder.

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

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

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

[0099] S02, when the tire 01 to be tested is loaded, the main loading mechanism 2 drives the yaw rotor 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, and 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 rotor 33, thereby applying a load to the tire 01 to be tested on the loading head 1 to perform a loading experiment;

[0100] S03, when performing a yaw test on the tire 01 to be tested, the yaw driving mechanism 32 arranged on the yaw mounting frame 31 drives the yaw rotating body 33 to rotate, and the yaw rotating body 33 drives the force measuring platform 6, the loading adjustment mechanism 5 and the loading head 1 to rotate, so that the tire 01 to be tested of the loading head 1 rotates to perform the yaw test;

[0101] S04, when the roll test is performed on the tire 01 to be tested, the roll drive mechanism 42 installed on the roll frame 41 drives the mounting frame 100 to swing, and 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, so that the tire 01 to be tested of the loading head 1 swings to perform the roll test;

[0102] In the step S02, step S03 and step S04, the force measuring platform 6 measures the applied force in the loading test, the yaw test and the roll test, so as to measure and control the applied force in the test and the force on the tire 01 to be tested;

[0103] In step S01, when it is necessary to replace the tire 01 to be tested with a different model, the loading adjustment driving 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 tires 01 to be tested.

[0104] The main loading method of the tire test realizes multi-channel large-load coordinated loading and coupling control through the main loading mechanism 2, the yaw mechanism 3 and the roll mechanism 4, simulates different roll angles of aircraft tire takeoff, simulates different roll angles of the fuselage when the aircraft tire lands, and simulates different roll angles and yaws when the aircraft lands and turns. The roll and yaw simulation control speed and control range reach the international advanced level. Through the main loading device of the tire test independently developed by the present invention, the device is used to simulate the complex mechanical environment of aviation tires under extreme working conditions such as aircraft catapult takeoff, ski jump takeoff, landing, roll, yaw, and aborted takeoff, and can realize accurate evaluation of the characteristics of aviation tire mechanics, dynamic operation, braking response, friction coefficient, etc., solves the technical difficulties of large-load and high-acceleration tire testing of domestic aviation tires, fills the gap in domestic high-acceleration testing technology of aviation tires, provides accurate testing means 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 aviation tire design, verification and test inspection standards. The test bench has currently conducted thousands of tire tests, which will make important contributions to solving the national aviation tire engineering.

[0105] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A main loading device for tire testing, characterized in that: The invention comprises 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 roll mechanism (4) used for driving the mounting frame (100) to drive the loading head (1), the main loading mechanism (2) and the yaw mechanism (3) to swing, wherein the loading head (1) is used for mounting a tire (01) to be tested, the loading head (1) is drivingly connected to the main loading mechanism (2), the main loading mechanism (2) is used for driving the loading head (1) to move up and down, and the yaw mechanism (3) is used for driving the loading head (1) to rotate horizontally.

2. The tire test main loading device according to claim 1, characterized in that: The roll mechanism (4) comprises a roll frame (41) and a roll drive mechanism (42), wherein the roll drive mechanism (42) is connected to the roll frame (41), the roll drive mechanism (42) is drivingly connected to the mounting frame (100), and the roll drive mechanism (42) is used to drive the mounting frame (100) to swing, so as to cause the loading head (1) to swing.

3. The tire test main loading device according to claim 2, characterized in that: The roll mechanism (4) further comprises a roll locking assembly (43), wherein the roll locking assembly (43) comprises a roll separation plate (431), a connecting plate (432) mounted on the mounting frame (100), a locking member (433) for locking the roll separation plate (431) to the connecting plate (432), and a fixing member (434) for locking the roll separation plate (431) to the roll frame (41); When in the locked state, the locking member (433) releases the locking of 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); and the roll separation plate (431) and the roll frame (41) are made to fit together; When it is necessary to adjust the roll from the locked state, the fixing member (434) releases the lock between the roll frame (41) and the roll separation plate (431), and the locking member (433) locks the roll separation plate (431) and the connecting plate (432), so that a gap exists between the roll separation plate (431) and the roll frame (41), and the roll separation plate (431) and the connecting plate (432) are in close contact with each other.

4. The tire test main loading device according to claim 3, characterized in that: The roll locking assembly (43) also includes a roll guide column (435), the roll separation plate (431) is provided with a roll matching hole (4311), the roll guide column (435) extends into the roll matching hole (4311) and matches with the roll matching hole (4311), the roll frame (41) is provided with a roll guide hole (411), both the locking member (433) and the roll guide column (435) can pass through the roll guide hole (411), and when the mounting frame (100) tilts and swings, the roll guide column (435) moves along the roll guide hole (411).

5. The main loading device for tire testing according to claim 4, characterized in that: The roll frame (41) is provided with a plurality of roll locking holes (412), the roll separation plate (431) is provided with a plurality of separation locking holes (4312), and the fixing member (434) passes through the roll locking holes (412) and the separation locking holes (4312) to lock the roll frame (41) and the roll separation plate (431); The roll locking assembly (43) further comprises a detection switch (436), wherein the detection switch (436) is connected to the connecting plate (432), and the detection switch (436) is used to detect the gap between the roll separation plate (431) and the connecting plate (432) before the mounting frame (100) rolls and swings.

6. The tire test main loading device according to claim 1, characterized in that: The tire test main loading device further comprises a loading adjustment mechanism (5), wherein the loading adjustment mechanism (5) is connected to the loading head (1); The loading adjustment mechanism (5) comprises a loading adjustment frame (51), a loading adjustment driving mechanism (52), a loading locking assembly (53) and an adjustment pad (54); the loading adjustment frame (51) is drivingly connected to the main loading mechanism (2); the loading adjustment driving mechanism (52) is used to adjust the space between the loading adjustment frame (51) and the loading head (1) so as to increase or decrease the installation of the 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).

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

8. The tire test main loading device according to claim 6, characterized in that: The loading adjustment driving mechanism (52) comprises a loading screw (521) threadedly connected to the loading head (1) and a screw rotation driving unit (522) drivingly connected to the loading screw (521); the screw rotation driving unit (522) is mounted on the loading adjustment frame (51); the screw rotation driving unit (522) drives the loading screw (521) to rotate, so that the loading head (1) moves up and down.

9. The tire test main loading device according to claim 6, characterized in that: The two opposite sides of the adjusting pad block (54) are respectively provided with a pad block installation groove (541) and a pad block positioning portion (542); the loading head (1) is provided with a loading installation groove (101); the pad block positioning portion (542) is installed in cooperation with the loading installation groove (101); two adjacent adjusting pad blocks (54) are installed in cooperation with the pad block installation groove (541) and the pad block positioning portion (542); the loading adjusting frame (51) is provided with an adjusting frame installation groove (511); an adjusting frame installation block (512) is detachably installed in the adjusting frame installation groove (511); the adjusting frame installation block (512) is installed in cooperation with the pad block installation groove (541).

10. The main loading device for tire testing according to claim 1, characterized in that: The yaw mechanism (3) comprises a yaw mounting frame (31) slidably connected to the mounting frame (100), a yaw driving mechanism (32) mounted on the yaw mounting frame (31), and a yaw rotating body (33) drivingly connected to the yaw driving mechanism (32), the yaw rotating body (33) drivingly connected to the loading head (1), the yaw rotating body (33) drivingly connected to the main loading mechanism (2), and the main loading mechanism (2) mounted on the mounting frame (100); The yaw rotating body (33) is rotatably connected to the yaw mounting frame (31), and the yaw driving mechanism (32) is used to drive the yaw rotating body (33) to rotate horizontally.

11. The tire test main loading device according to claim 10, characterized in that: The yaw mounting frame (31) is provided with a first mounting groove (311) and a second mounting groove (312), the first mounting groove (311) and the second mounting groove (312) are both provided with bearings (313), and the yaw rotating body (33) is installed in the first mounting groove (311) and the second mounting groove (312) via the bearings (313).

12. The tire test main loading device according to claim 10, characterized in that: The yaw drive mechanism (32) comprises a rotating body driving unit (321), and a yaw limiting body (322) drivingly connected to the rotating body driving unit (321), wherein the yaw limiting body (322) is connected to the yaw rotating body (33); The yaw drive mechanism (32) further comprises a yaw connection plate (323) connected to the yaw mounting frame (31); a first yaw limit block (324) and a second yaw limit block (325) are mounted on the yaw connection plate (323); the yaw limit body (322) is movable within a 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).

13. The tire test main loading device according to claim 10, characterized in that: The tire test main loading device also includes a main loading locking mechanism (21) for locking the mounting frame (100) and the yaw mounting frame (31); The main loading locking mechanism (21) comprises a locking driving member (211) mounted on a yaw mounting frame (31) and a locking support portion (212) drivingly connected to the locking driving member (211); the mounting frame (100) is provided with a main loading locking groove (1001); when the main loading mechanism (2) is not working, the locking driving member (211) drives the locking support portion (212) to extend into the main loading locking groove (1001), so that the main loading locking mechanism (21) supports and locks the yaw mounting frame (31).

14. The main loading device for tire testing according to claim 10, characterized in that: The mounting frame (100) is connected to a mounting protection member (1002), the yaw mounting frame (31) is connected to a main loading limit member (314), and the main loading mechanism (2) drives the yaw rotating body (33) to move so that the main loading limit member (314) abuts against the mounting protection member (1002) when the yaw mounting frame (31) moves to the end of the stroke.

15. A tire test main loading method, characterized in that: The following steps are involved: S01, the tire to be tested (01) is installed on the loading head (1); S02, when a 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), and the main loading mechanism (2) transmits 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 perform a loading experiment; S03, when a yaw test is performed on the tire (01) to be tested, a yaw driving mechanism (32) arranged on the yaw mounting frame (31) drives the yaw rotating body (33) to rotate, and the yaw rotating body (33) drives the force measuring platform (6), the loading adjustment mechanism (5) and the loading head (1) to rotate, thereby rotating the tire (01) to be tested on the loading head (1) to perform the yaw test; S04, when a roll test is performed on the tire (01) to be tested, the roll drive mechanism (42) installed on the roll frame (41) drives the mounting frame (100) to swing, and 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, so as to perform the roll test; In step S02, step S03 and step S04, the force measuring platform (6) measures the applied force in the loading test, the yaw test and the roll test, so as to measure and control the applied force in the test and the force on the tire (01) to be tested; In step S01, when it is necessary to replace the tire to be tested (01) with a different model, The loading adjustment driving 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), thereby making the loading head (1) adaptable to the installation of tires (01) of different models to be tested.

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