A device for testing the bond strength of aircraft tire cord and rubber composite

Abstract

This utility model discloses a device for testing the bonding strength of aviation tire cord and rubber composite, belonging to the field of materials testing technology. The device includes a base plate, slide rail, connecting plate, side frame, connecting rod, and tensioning mechanism. The tensioning mechanism consists of a side plate, slide groove, slider, upper plate, clamping plate, protrusion, and rubber composite test piece. Automatic tensioning and resetting are achieved through a cylinder, sleeve rod, and second spring; angle adjustment and locking are achieved through a ratchet and handle. The side end of the connecting plate is equipped with a fixing plate, telescopic rod, first spring, and clamping block for positioning in conjunction with the clamping jaws on the base plate. Limiting plates are provided at both ends of the base plate for limiting movement. This utility model has a reasonable structure, is easy to operate, and has good sample adaptability, testing stability, and data repeatability. It is suitable for testing the bonding strength of aviation tire cord and rubber composite materials of different specifications.

Description

Technical Field

[0001] This utility model belongs to the field of materials testing technology, specifically relating to a device for testing the bonding strength of aviation tire cord and rubber composite. Background Technology

[0002] Currently, aircraft tires, as critical load-bearing components during aircraft takeoff, landing, and taxiing, directly impact flight safety and ground operational reliability through their structural performance. Within the structure of aircraft tires, the bond strength between the cord material and the rubber is a crucial factor affecting their overall durability and mechanical properties. To ensure stable performance of aircraft tires under complex operating conditions, the industry commonly employs specialized testing equipment to evaluate the bond performance of the cord-rubber composite interface.

[0003] Existing bond strength testing devices have achieved certain results in practical applications and can meet basic tensile testing needs. For example, some testing devices achieve tensile separation of samples through mechanical clamping and pneumatic or hydraulic loading, and obtain bond strength data in conjunction with a force measurement system. These devices have played a positive role in material research and development, quality control, and process optimization.

[0004] However, in actual operation, further improving the stability of the testing process, the convenience of sample clamping, and the repeatability and accuracy of test results remains one of the important directions in the optimization design of current testing equipment. Especially when dealing with samples of different specifications or multi-angle force simulations, higher requirements are placed on the structural layout, clamping method, and positioning accuracy of the testing device. Utility Model Content

[0005] The purpose of this invention is to provide a device for testing the bonding strength of aviation tire cord and rubber composite, aiming to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A device for testing the bond strength of aircraft tire cord and rubber composite, comprising:

[0008] Base plate;

[0009] A slide rail, which is connected to the upper end of the base plate;

[0010] A slider is slidably connected to a slide rail, and a connecting plate is fixedly connected to the upper end of the slider;

[0011] Side frame, which is fixedly connected to the upper end of the connecting plate;

[0012] A connecting rod, which is rotatably connected to the side end of the side frame;

[0013] A tensile mechanism includes a side plate, a slide groove, a slider, an upper plate, a clamping plate, a protrusion, and a rubber composite test piece. The side plate is fixedly connected to the side end of a connecting rod. The slide groove is formed at the side end of the side plate. The slider is slidably connected within the slide groove. The upper plate is fixedly connected to the upper end of the slider. The clamping plate is slidably clamped onto the upper plate. The protrusion is fixedly connected to the upper end of the clamping plate. The rubber composite test piece is clamped onto the protrusion.

[0014] In a preferred embodiment of this utility model, a fixing bolt is threadedly connected between the upper plate and the card plate, and a cylinder is fixedly connected to the side end of the slider.

[0015] In a preferred embodiment of this utility model, a connecting plate is fixedly connected to the side end of the cylinder, a sleeve rod is connected between the connecting plate and the side plate, and a second spring is sleeved and connected to the circumferential surface of the sleeve rod.

[0016] In a preferred embodiment of this utility model, a ratchet wheel is connected between the connecting rod and the side frame, and a handle is fixedly connected to the side end of the side plate.

[0017] In a preferred embodiment of this utility model, a fixing plate is fixedly connected to the side end of the connecting plate, a telescopic rod is fixedly connected to the lower end of the fixing plate, a first spring is sleeved and connected to the circumferential surface of the telescopic rod, a locking block is connected to the output end of the telescopic rod, and multiple locking slots are opened at the upper end of the base plate, with the locking block engaging with the locking slots.

[0018] As a preferred embodiment of this utility model, limiting plates are fixedly connected to both the left and right ends of the base plate.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. In this solution, a combination of slide rails and sliders, along with a limiting plate on the base plate, telescopic rods, and locking blocks, achieves overall positioning and locking of the equipment. This ensures the stability of the entire device during tensile testing, avoiding test errors caused by equipment displacement. This design not only improves the repeatability and accuracy of test results but also enhances the applicability of the equipment under complex working conditions.

[0021] 2. In this solution, the tensile mechanism includes side plates, slides, sliders, an upper plate, a clamping plate, protrusions, and a rubber composite test piece, which are adjusted and locked using fixing bolts. This structure can flexibly adjust the clamping position according to different sample sizes and shapes, ensuring that the sample is firmly fixed and subjected to uniform force. Furthermore, the cylinder-driven automatic tensile function further simplifies the operation process, improving testing efficiency and convenience. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 This is an exploded view of the present invention;

[0025] Figure 3 This utility model Figure 2 Enlarged view of the midsole plate;

[0026] Figure 4 This utility model Figure 2 Exploded view of the middle side panel.

[0027] In the diagram: 1. Base plate; 2. Slide rail; 3. Slider; 4. Connecting plate; 5. Side frame; 6. Fixing plate; 7. Telescopic rod; 8. First spring; 9. Locking block; 10. Side plate; 11. Handle; 12. Connecting rod; 13. Ratchet; 14. Slide groove; 15. Slider; 16. Top plate; 17. Locking plate; 18. Fixing bolt; 19. Protrusion; 20. Rubber composite test piece; 21. Cylinder; 22. Connecting plate; 23. Sleeve rod; 24. Limiting plate; 25. Bayonet; 26. Second spring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figure 1-4 The present invention provides the following technical solution:

[0031] A device for testing the bond strength of aircraft tire cord and rubber composite, comprising:

[0032] Base plate 1;

[0033] Slide rail 2 is connected to the upper end of base plate 1;

[0034] Slider 3 is slidably connected to slide rail 2, and a connecting plate 4 is fixedly connected to the upper end of slider 3;

[0035] Side frame 5 is fixedly connected to the upper end of connecting plate 4;

[0036] Connecting rod 12 is rotatably connected to the side end of side frame 5;

[0037] The tensioning mechanism includes a side plate 10, a slide groove 14, a slider 15, an upper plate 16, a clamping plate 17, a protrusion 19, and a rubber composite test piece 20. The side plate 10 is fixedly connected to the side end of the connecting rod 12. The slide groove 14 is opened at the side end of the side plate 10. The slider 15 is slidably connected in the slide groove 14. The upper plate 16 is fixedly connected to the upper end of the slider 15. The clamping plate 17 is slidably clamped onto the upper plate 16. The protrusion 19 is fixedly connected to the upper end of the clamping plate 17. The rubber composite test piece 20 is clamped onto the protrusion 19.

[0038] In a specific embodiment of this utility model, when it is necessary to test the bonding strength between aviation tire cord and rubber composite material, the sample to be tested is first cut to a standard size and installed on the rubber composite test piece 20. Then the test piece is snapped onto the protrusion 19. This can ensure that the sample remains stable during the stretching process and avoid slippage or displacement.

[0039] When the operator manually pulls the handle 11, causing the connecting rod 12 to rotate around the side frame 5, the connecting rod 12 causes the side plate 10 to change angle, thereby changing the position and direction of the tensioning mechanism. This can simulate the stress state under different angles and meet the bonding performance testing requirements under various working conditions.

[0040] Thus, when the slider 15 slides within the groove 14 and moves the upper plate 16 and the clamping plate 17, the relative position between the clamping plate 17 and the upper plate 16 can be adjusted to control the clamping force of the test sample, making it adaptable to the test requirements of samples of different thicknesses or materials.

[0041] When the cylinder 21 starts and pushes the connecting plate 22 to move, the sleeve rod 23 moves synchronously between the side plate 10 and the connecting plate 22, and the second spring 26 plays a buffering and resetting role. This allows the system to automatically return to its initial state after the tensile test is completed, improving testing efficiency and equipment lifespan.

[0042] In this way, during the tensile test, the slider 3 on the slide rail 2 can slide freely on the base plate 1, driving the connecting plate 4 and the side frame 5 to move together; and through the cooperation of the fixing plate 6, the telescopic rod 7 and the first spring 8, the locking block 9 can be accurately inserted into the locking slot 25 on the base plate 1, thereby locking the overall position of the testing device and preventing displacement during the test from affecting the test accuracy.

[0043] When the test is completed and it is necessary to change the sample or adjust the test parameters, the clamping plate 17 can be quickly disassembled and replaced simply by loosening the fixing bolt 18. This not only improves the ease of operation, but also enhances the versatility and ease of maintenance of the equipment.

[0044] Please refer to the details. Figure 1-4 A fixing bolt 18 is threadedly connected between the upper plate 16 and the clamping plate 17, and a cylinder 21 is fixedly connected to the side end of the slider 15.

[0045] In this embodiment: when it is necessary to clamp and fix rubber composite test pieces 20 of different thicknesses or sizes, the operator can loosen the fixing bolts 18 between the upper plate 16 and the clamping plate 17, so as to release the locking state between the two and allow the clamping plate 17 to slide up and down along the upper plate 16, thereby adjusting the clamping space to adapt to the size of the sample.

[0046] After the clamping plate 17 is adjusted to the appropriate position, tighten the fixing bolt 18 again to secure the clamping plate 17 to the upper plate 16 through the threaded connection; this ensures that the sample will not slip or fall off during the test, and improves the accuracy and reliability of the test data.

[0047] After the sample installation is completed, the cylinder 21 connected to the side of the slider 15 is activated, and its output end drives the connecting plate 22 and the sleeve rod 23 to move. In this way, the tensile force can be applied through mechanical linkage, while the second spring 26 provides a buffering effect to avoid the test results or damage to equipment parts due to excessive impact force.

[0048] When the cylinder 21 pushes the system to perform a stretching action, the entire stretching mechanism moves smoothly through the cooperation of the slide groove 14 and the slider 15, ensuring the consistency of direction and uniformity of force during the stretching process, which helps to obtain more accurate bonding strength data.

[0049] In this way, after the test is completed, the cylinder 21 can automatically retract, driving all the linkage components to return to their initial positions; the operator only needs to loosen the fixing bolt 18 again to quickly replace the new test sample, thereby improving the testing efficiency and ease of operation.

[0050] When dealing with various types or materials of aircraft tire cord and rubber composite samples, this method of adjusting the height of the clamping plate 17 by fixing bolt 18 and controlling the tensile force by cylinder 21 not only improves the versatility and automation level of the device, but also enhances the stability and repeatability of the testing process.

[0051] Please refer to the details. Figure 1-4 A connecting plate 22 is fixedly connected to the side end of the cylinder 21. A sleeve rod 23 is connected between the connecting plate 22 and the side plate 10. A second spring 26 is sleeved and connected to the circumferential surface of the sleeve rod 23.

[0052] In this embodiment: when the cylinder 21 is started and pushes its output end forward, the connecting plate 22 connected to its side moves accordingly. In this way, the connecting plate 22 drives the entire linkage mechanism into the tensile test state, providing power support for the subsequent bonding strength test.

[0053] When the connecting plate 22 is connected to the side plate 10 through the sleeve rod 23, the sleeve rod 23 acts as a guide and support component to ensure that the connecting plate 22 maintains a stable trajectory during movement, which can effectively avoid affecting the test accuracy due to deviation or shaking.

[0054] In this way, after the tensile test is completed, the cylinder 21 retracts and the connecting plate 22 returns to its initial position. At this time, the second spring 26 sleeved on the sleeve rod 23 is compressed and releases its elastic potential energy, which helps the connecting plate 22 to quickly and smoothly return to its original position, thereby improving the reset efficiency and operation continuity of the equipment.

[0055] When conducting continuous multi-sample tests, the buffering effect of the second spring 26 can reduce mechanical impact and protect key components of the equipment from damage. This not only improves the stability of the device operation but also helps to extend the service life of the equipment.

[0056] Thus, when different specifications of rubber composite test pieces 20 need to be tested, this structural design achieves effective control of tensile force and automatic reset function through a combination of cylinder drive and elastic reset, making the entire testing process more efficient, safe and easy to operate.

[0057] When the testing personnel finish testing the current sample and are ready to replace it with a new sample, they only need to wait for the system to automatically reset to quickly enter the next round of testing. There is no need for manual intervention in the reset operation, which further improves the testing efficiency and automation level.

[0058] Please refer to the details. Figure 1-4 A ratchet 13 is connected between the connecting rod 12 and the side frame 5, and a handle 11 is fixedly connected to the side end of the side plate 10.

[0059] In this embodiment: when it is necessary to adjust the angle of the tensioning mechanism to adapt to different test angles or sample types, the operator can manually apply force through the handle 11 on the side plate 10 to drive the connecting rod 12 to rotate around the side frame 5, thereby changing the tensioning direction and the force angle.

[0060] When the connecting rod 12 rotates, the ratchet teeth 13 between it and the side frame 5 will gradually engage and lock; this can achieve stable support at any set angle, prevent angle deviation caused by external force during the test, and thus improve the accuracy and repeatability of the test results.

[0061] In this way, after the angle adjustment is completed, the ratchet 13 automatically locks the current state, ensuring that the entire tensioning mechanism maintains a fixed posture during the test; even when the cylinder 21 applies tension force, it can effectively prevent the occurrence of structural loosening or angle slippage.

[0062] After the test is completed, if it is necessary to restore the initial angle or make adjustments before the next test, simply press the release button of the ratchet 13 to unlock the lock and then adjust the angle flexibly again using the handle 11. This can meet various testing needs and improve the ease of operation of the equipment.

[0063] In this way, the coordinated design of the handle 11 and the ratchet 13 not only achieves precise control of the stretching angle, but also enhances the adaptability of the testing device and the human-computer interaction experience, making it suitable for testing the bonding strength of different types of aircraft tire cords and rubber composite materials.

[0064] When faced with complex multi-angle bonding performance evaluation tasks, this structural design provides testers with a more intuitive and stable adjustment method, which helps to improve testing efficiency and data reliability, and further expands the application scope of the testing device.

[0065] Please refer to the details. Figure 1-4 A fixing plate 6 is fixedly connected to the side end of the connecting plate 4, and a telescopic rod 7 is fixedly connected to the lower end of the fixing plate 6. A first spring 8 is sleeved and connected to the circumferential surface of the telescopic rod 7. A locking block 9 is connected to the output end of the telescopic rod 7. Multiple locking slots 25 are opened at the upper end of the base plate 1, and the locking block 9 is engaged with the locking slots 25.

[0066] In this embodiment: when it is necessary to lock the overall position of the detection device to ensure test stability, the operator pushes the telescopic rod 7 on the fixed plate 6 downward, causing the locking block 9 to move downward and applying a compressive force to the first spring 8.

[0067] When the locking block 9 moves to the position aligned with the locking slot 25 on the base plate 1, after the external force is released, the first spring 8 releases its elastic potential energy, pushing the locking block 9 to automatically embed into the corresponding locking slot 25. This can fix the position of the entire tensioning mechanism on the base plate 1 and prevent displacement or shaking during the test.

[0068] In this way, when performing the bond strength tensile test, the connecting plate 4 achieves stable positioning through the cooperation of the clamping block 9 and the clamping slot 25; thereby effectively improving the repeatability and accuracy of the test data and avoiding errors caused by equipment displacement.

[0069] After the test is completed, if it is necessary to adjust the position of the testing device or change the test sample, simply press the locking block 9 again to disengage it from the locking slot 25, and the connecting plate 4 can be slid along the slide rail 2 to the new testing position. This allows for quick adaptation to different testing needs and improves operational efficiency.

[0070] In this way, through the linkage mechanism between the telescopic rod 7, the first spring 8 and the locking block 9, not only is the rapid positioning and release of the testing device achieved, but the flexibility and practicality of the equipment are also enhanced, making it suitable for evaluating the bonding performance of aviation tire cord and rubber composite materials under various testing environments.

[0071] When faced with samples of different specifications or tasks requiring multi-point testing, this structural design provides testing personnel with a convenient and stable positioning method, which helps improve testing efficiency and result consistency, further expanding the functional applicability of the testing device.

[0072] Please refer to the details. Figure 1-4 Limiting plates 24 are fixedly connected to both the left and right ends of the base plate 1.

[0073] In this embodiment: when the testing device is performing a bonding strength test on the bonding strength between aviation tire cord and rubber composite material, the connecting plate 4 drives the slider 3 to slide along the slide rail 2 to achieve position adjustment; the limiting plates 24 set at the left and right ends of the base plate 1 can physically limit the movement range of the slider 3.

[0074] When the slider 3 approaches the end of the slide rail 2, the limiting plate 24 blocks it from continuing to slide. This prevents the connecting plate 4 and its upper structure from detaching from the base plate 1 due to excessive displacement, thereby avoiding equipment damage or test interruption and improving the safety and stability of operation.

[0075] Thus, during actual testing, even if the cylinder 21 applies a large tensile force, causing the entire machine to have a reverse displacement tendency, the limiting plate 24 can effectively limit the movement boundary of the slider 3, ensuring that the entire testing device maintains structural integrity and stable operation under stress.

[0076] When the tester finishes testing the current sample and is ready to replace it with a new sample, the slider 3 can be manually reset to the safe area between the two limit plates 24. This helps to ensure the consistency of the starting position of each test and improves the repeatability and accuracy of the test data.

[0077] In this way, by setting limiting plates 24 at both ends of the base plate 1, not only is the structural safety of the testing device improved, but its stability and practicality in complex testing environments are also enhanced, making it suitable for efficient testing of the bonding performance of aviation tire cords and rubber composite materials under various working conditions.

[0078] The working principle and usage process of this utility model are as follows: First, place the testing device on a stable operating table or experimental platform. Confirm that the limiting plates 24 fixedly connected to both ends of the base plate 1 are intact and check whether the sliding between the slide rail 2 and the slider 3 is smooth. Ensure that all components are in normal working condition. Cut the aviation tire cord and rubber composite sample to be tested to standard size and clip one end onto the rubber composite test piece 20. Then install the test piece 20 onto the protrusion 19 and ensure that it is firmly fixed. Subsequently, adjust the fixing bolt 18 between the clamping plate 17 and the upper plate 16 to stabilize the sample clamping. Manually adjust the angle of the tensioning mechanism through the handle 11 on the side plate 10 to make it conform to the force direction required for the current test. During the adjustment process, the ratchet 13 between the connecting rod 12 and the side frame 5 can achieve multi-angle locking to prevent angle deviation during the test. Start the cylinder 21 to drive the connecting plate 2 2. The sleeve rod 23 moves, and the second spring 26 acts as a buffer to ensure a smooth stretching process. The slider 15 slides in the groove 14, driving the upper plate 16 and the clamping plate 17 to move, thereby applying a tensile force to the sample. Before starting the formal test, press down on the telescopic rod 7 on the fixed plate 6 to compress the first spring 8, causing the clamping block 9 to disengage from the clamping slot 25 on the bottom plate 1. Then, slide the connecting plate 4 along the slide rail 2 to the appropriate position and release. The first spring 8 rebounds and drives the clamping block 9 to insert into the corresponding clamping slot 25, achieving precise positioning of the equipment. After confirming that all structural components are firmly connected, start the cylinder 21 to perform the tensile test and record the maximum tensile force value when the sample breaks during the stretching process as key data for evaluating the bonding strength. After the test is completed, the cylinder 21 automatically retracts, driving the stretching mechanism to return to its initial state. Remove the test sample and clean the residue. If you need to continue testing other samples, repeat the above steps.

[0079] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An apparatus for detecting the bonding strength of an aviation tire cord and rubber composite, characterized by, include: Base plate (1); Slide rail (2), which is connected to the upper end of the base plate (1); The slider (3) is slidably connected to the slide rail (2), and the upper end of the slider (3) is fixedly connected to the connecting plate (4); Side frame (5), which is fixedly connected to the upper end of the connecting plate (4); Connecting rod (12), which is rotatably connected to the side end of the side frame (5); The tensioning mechanism includes a side plate (10), a groove (14), a slider (15), an upper plate (16), a clamping plate (17), a protrusion (19), and a rubber composite test piece (20). The side plate (10) is fixedly connected to the side end of the connecting rod (12). The groove (14) is opened at the side end of the side plate (10). The slider (15) is slidably connected in the groove (14). The upper plate (16) is fixedly connected to the upper end of the slider (15). The clamping plate (17) is slidably clamped on the upper plate (16). The protrusion (19) is fixedly connected to the upper end of the clamping plate (17). The rubber composite test piece (20) is clamped on the protrusion (19).

2. A device for detecting the bonding strength of a cord and rubber composite of an aircraft tire according to claim 1, characterized in that: A fixing bolt (18) is threaded between the upper plate (16) and the clamping plate (17), and a cylinder (21) is fixedly connected to the side end of the slider (15).

3. A device for detecting the bonding strength of a cord-rubber composite of an aircraft tire according to claim 2, characterized in that: A connecting plate (22) is fixedly connected to the side end of the cylinder (21), and a sleeve rod (23) is connected between the connecting plate (22) and the side plate (10). A second spring (26) is sleeved and connected to the circumferential surface of the sleeve rod (23).

4. A device for detecting the bonding strength of a cord-rubber composite of an aircraft tire according to claim 3, characterized in that: The connecting rod (12) is connected to the side frame (5) by a ratchet (13), and a handle (11) is fixedly connected to the side end of the side plate (10).

5. A device for detecting the bonding strength of a cord-rubber composite of an aircraft tire according to claim 4, characterized in that: A fixing plate (6) is fixedly connected to the side end of the connecting plate (4), and a telescopic rod (7) is fixedly connected to the lower end of the fixing plate (6). A first spring (8) is sleeved and connected to the circumferential surface of the telescopic rod (7). A locking block (9) is connected to the output end of the telescopic rod (7). Multiple locking slots (25) are opened at the upper end of the base plate (1), and the locking block (9) is engaged with the locking slots (25).

6. A device for detecting the bonding strength of a cord-rubber composite of an aircraft tire according to claim 5, characterized in that: Limiting plates (24) are fixedly connected to both the left and right ends of the base plate (1).

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