An aircraft tire static balancing detection device
By using ultrasonic vibration and water level control components, static balance testing of aircraft tires under dry and wet conditions was achieved, solving the problem that existing equipment could not simulate wet conditions and improving the tire's safety assessment capability under severe weather conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINGDAO SENTURY TIRE CO LTD
- Filing Date
- 2026-03-11
- Publication Date
- 2026-06-09
AI Technical Summary
Existing static balance testing equipment for aircraft tires cannot perform tests under simulated wet conditions, cannot assess the impact of liquid adhesion on tire balance performance, lacks state comparison and quantitative assessment methods, and cannot establish early warning thresholds or maintenance standards for tire safety in severe weather.
An aircraft tire static balance testing device was designed. Through ultrasonic vibration and water level control components, the device can detect the static balance of the tire in dry and wet conditions. The ultrasonic transducer breaks the air gap barrier to ensure uniform liquid adhesion. Combined with the lifting frame and rotating components, the device can switch between the tire's rotation and stationary states, ensuring the consistency and repeatability of the testing conditions.
It enables comparative testing of tire static balance under dry and wet conditions, improves the tire's safety assessment capability under all operating conditions, ensures the reliability and repeatability of test results, and provides a basis for safety assessment under adverse weather conditions.
Smart Images
Figure CN122171098A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of tire testing, and in particular to a static balance testing device for aircraft tires. Background Technology
[0002] With the rapid development of the aviation industry, aircraft tires, as a key component of aircraft takeoff and landing systems, have received extremely high attention for their safety and reliability. During the manufacturing, retreading, and maintenance of aircraft tires, rigorous static balance testing must be conducted to ensure that they do not generate harmful vibrations due to uneven mass distribution during high-speed rotation, thus affecting flight safety.
[0003] Currently, static balance testing of aircraft tires is primarily conducted in a dry, unloaded, ideal laboratory environment. For example, Chinese patent CN219369025U discloses a "tire static balance test frame," which supports the tire's main shaft using adjustable-gap brackets and bearings. The tire is manually rotated, and its static state is observed to determine its balance. While this type of equipment solves the problem of universal support for tires of different sizes, its testing conditions differ significantly from the actual working conditions of aircraft tires, mainly in the following aspects: Environmental factors are being completely ignored: When aircraft take off and land in rain, snow, on wet runways, or on runways treated with de-icing fluid, water, ice, or chemical liquids adhere to the tire surface, creating a localized wet state. This liquid adhesion can instantly alter the local mass distribution of the tire, potentially disrupting its original equilibrium state. However, all existing static balance testing equipment and technologies fail to consider this critical environmental variable, lacking methods and standardized devices for testing under controlled and repeatable wet conditions. Current technology can only handle ideal "dry and clean" conditions and cannot assess tire performance under actual, complex weather conditions.
[0004] Lack of comparative and quantitative assessment methods: Due to the lack of integrated wet-state simulation and detection functions, existing technologies cannot quickly and continuously compare the static balance performance of tires under "dry baseline conditions" and "standardized wet conditions" using the same equipment and clamping reference. Therefore, the industry cannot quantitatively assess the specific impact of liquid adhesion on the balance performance of a particular tire (i.e., "wet sensitivity"), nor can it establish early warning thresholds or maintenance standards based on test data for tire safety in adverse weather conditions. Summary of the Invention
[0005] To solve the above-mentioned technical problems, the present invention provides an aircraft tire static balance testing device.
[0006] This invention discloses a static balance testing device for aircraft tires, comprising a base, a main water tank, disc springs, a controller, a tire, a main shaft, a hub, and gears. A set of disc springs is respectively installed at each of the four corners of the bottom of the main water tank, and the bottom ends of all four sets of disc springs are fixedly connected to the top of the base. An ultrasonic generator is installed on the base, and multiple sets of ultrasonic transducers are installed at the bottom of the main water tank. The ultrasonic generator is wire-connected to the multiple sets of ultrasonic transducers. A controller is installed at the top of the base, a hub is installed on the main shaft, and the tire is fitted onto the outside of the hub. A set of gears is installed on the main shaft. The device also includes: The lifting frame assembly, which is mounted on the base, is used for the lifting and rotation of the tires; A water level control component, mounted on top of the base, is used to adjust the water level inside the main water tank. A rotating component, mounted on top of the base, is used to cause the tire to rotate when the lifting component raises the tire. In use, the tire is fitted onto the hub, and the main shaft is placed on the lifting frame assembly. The main water tank is not initially filled with water. The operator then uses the controller to operate the lifting component, causing the main shaft, hub, and tire to descend and then rise. When the main shaft drives the gear to descend, the rotating component moves away from the gear, keeping the tire stationary. When the main shaft drives the gear to rise, the rotating component drives the gear to rotate, causing the tire to rotate. After a period of time, the operator observes the tire's rotation position, marks the highest point on the tire's outer sidewall, and performs a dry static balance test. When a wet static balance test is required, water is added to the main water tank, and the water level control component adjusts the water level in the main water tank to the same height. Then, the lifting frame assembly is lowered via the controller, and an ultrasonic generator is activated. The device generates ultrasonic transducers, causing the water inside the main water tank to vibrate. The high-frequency vibration and cavitation effect of the ultrasonic waves in the water effectively remove microscopic bubbles at the interface between the tire rubber surface and the water, destroying the air gap barrier and promoting a tight, uniform, and deep wettation of the tire surface by the liquid. This overcomes the problems of random and uneven liquid adhesion and easy formation of air film in traditional natural immersion or spraying methods, ensuring a high degree of consistency and repeatability of the initial condition of "wetting" in each test. This lays a reliable physical basis for subsequent accurate static balance comparison testing, achieving local water immersion of the tire. After the operation is completed, the lifting frame assembly rises, causing the rotating component to drive the gear to rotate, further rotating the tire. After the tire comes to rest, the high point of the tire is marked, enabling static balance comparison testing of the tire in both dry and wet states, improving the tire's all-condition safety assessment capability.
[0007] Preferably, the lifting frame assembly includes vertical plates, lead screws, a dual-axis motor, rotating shafts, a first conical wheel, a second conical wheel, sliders, and guide wheels. The base has an internal chamber, and two sets of vertical plates are located at the top of the base. Each set of vertical plates has a set of strip-shaped openings, and a set of lead screws is rotatably mounted in each of these openings. The bottom ends of both sets of lead screws extend into the chamber and are each equipped with a set of second conical wheels. A dual-axis motor is fixedly mounted in the chamber. A set of rotating shafts is located at each of the two output ends of the dual-axis motor. A first conical wheel is mounted on each rotating shaft, and each first conical wheel meshes with a set of second conical wheels. The dual-axis motor is electrically connected to the controller. A set of sliders is slidably mounted in each set of strip-shaped openings, and each set of sliders is threadedly connected to a set of lead screws. Each set of sliders is equipped with a slot, and two sets of guide wheels are rotatably mounted in each slot. In use, the two ends of the main shaft are placed in the two slots respectively, and the outer wall of the main shaft rolls in contact with the two sets of guide wheels in the slots. Then, the controller operates the dual-axis motor to rotate forward, thereby causing the two sets of first-order conical wheels to drive the two sets of second-order conical wheels to rotate. Since the sliders are threadedly connected to the lead screw, the two sets of sliders descend synchronously, allowing the tire to enter the main water tank and partially contact the water, creating a locally wet state. Then, the dual-axis motor is operated to rotate in the reverse direction, causing the two sets of sliders to lift the tire while the rotating assembly rotates the gears, further allowing the main shaft to drive the tire to rotate freely, and the guide wheels to rotate adaptively, achieving static balance detection of the tire in a wet state.
[0008] Preferably, the water level control component includes a secondary water tank, an overflow pipe, a water delivery hose, a water pump, a tee pipe, a return pipe, a return valve, an external drain pipe, and an external drain valve. The secondary water tank is located at the top of the base, and the overflow pipe is located at the rear end of the main water tank. The outlet of the overflow pipe is connected to the inlet of the water delivery hose, and the outlet of the water delivery hose is connected to the top of the front end of the secondary water tank. The water pump is located at the top of the base, and the outlet of the water pump is connected to a tee pipe. The first outlet of the tee pipe is connected to a return pipe with a return valve, and the second outlet of the tee pipe is connected to an external drain pipe with an external drain valve. Water is injected into the main water tank, and when the main water tank... When the internal water level is higher than the overflow pipe, water from the main water tank is injected into the auxiliary water tank through the overflow pipe and the water delivery hose, ensuring consistent water level detection inside the main water tank. When the tire enters the main water tank, the water level rises, and the water is collected in the auxiliary water tank through the overflow pipe and the water delivery hose. After wetting, the water level inside the main water tank drops significantly. The external drain valve is closed and the return valve is opened, and the water pump is started, allowing the water collected in the auxiliary water tank to return to the main water tank. This also enables automatic adjustment of the water level inside the main water tank, improving operational convenience. The external drain valve is opened and the return valve is closed, and the water pump is started, allowing the water inside the auxiliary water tank to be discharged.
[0009] Preferably, the rotating assembly includes a pin, a support arm, a rack, a fixed shaft, a roller, a guide groove, and a check valve assembly. The bottom end of the support arm is hinged to the top end of the base via the pin. A torsion spring is installed inside the pin, causing the top end of the support arm to tilt forward. A rack is installed at the rear end of the support arm. A fixed shaft is installed at one end of the slider, and a roller is rotatably mounted at the other end of the fixed shaft. A closed guide groove is provided on the side end of the support arm, consisting of an arc-shaped groove and a straight groove. The roller rolls in contact with the inner wall of the guide groove. A check valve assembly is installed at the connection between the bottom of the arc-shaped groove and the bottom of the straight groove. In use, the roller is at the connection between the top of the arc-shaped groove and the top of the straight groove, and the slider drives the tire, main shaft, and... As the wheel hub descends, the torsion spring causes the top of the support arm to tilt forward, allowing the roller to enter the arc-shaped groove. Because the roller moves vertically downwards, the support arm swings along the arc-shaped groove, causing the rack and gear to move away from each other, thus keeping the tire stationary as it enters the main water tank. At this point, the roller remains stationary through the check valve assembly, and the rack is directly above the gear. After the tire is fully wetted, the slider lifts the tire, and the roller rises linearly in the straight groove, keeping the rack vertical and above the gear. As the gear continues to rise, it meshes with the rack, keeping the rack stationary. The gear rises linearly, causing it to rotate, further rotating the tire and achieving static balance detection of the tire in a wet state.
[0010] Preferably, the anti-return assembly includes a spring, a telescopic rod, a locking block, and an inclined end. A positioning groove is provided on the side wall of the guide groove, and the locking block is slidably disposed in the positioning groove. The locking block has an inclined end and a concave groove, in which the spring and the telescopic rod are disposed. When the roller moves downwards in the arc-shaped groove, the roller abuts against the inclined end, causing the locking block to rise within the positioning groove. When the roller passes through the locking block, the spring pressure causes the locking block to seal the guide groove. When the roller rises, the locking block prevents the roller from moving back along the arc-shaped groove, thus enabling the roller to rise linearly along the straight groove, improving rotational efficiency.
[0011] Preferably, it also includes a reinforcing plate, and a reinforcing plate is provided between the base and the vertical plate; the base and the vertical plate are reinforced by the reinforcing plate to improve the connection strength.
[0012] Preferably, the base also includes adjustable feet, with a set of adjustable feet provided at each of the four corners; the four sets of adjustable feet work together to provide stable support for the base and improve stability.
[0013] Preferably, it also includes a connecting pipe and a connecting valve. A connecting pipe is provided between the main water tank and the auxiliary water tank, and a connecting valve is installed on the connecting pipe. When it is necessary to drain and replace the water inside the main water tank, the connecting valve is opened, so that the water inside the main water tank enters the auxiliary water tank through the principle of communicating vessels, and the water pump is started to realize the drainage of water from the auxiliary water tank and the main water tank.
[0014] Preferably, the beveled end is provided with a smooth, wear-resistant coating.
[0015] Preferably, the dual-axis motor is a self-locking motor.
[0016] Compared with the prior art, the beneficial effects of this invention are as follows: In use, the tire is fitted onto the hub, and the main shaft is placed on the lifting frame assembly. The main water tank is not initially filled with water. Then, the operator uses the controller to operate the lifting assembly, which lowers and then raises the main shaft, hub, and tire. When the main shaft drives the gear to descend, the rotating component moves away from the gear, keeping the tire stationary. When the main shaft drives the gear to rise, the rotating component drives the gear to rotate, causing the tire to rotate. After a period of time, the operator observes the tire's rotation position, marks the highest point on the outer sidewall of the tire, and performs a dry static balance test. When a wet static balance test is required, water is injected into the main water tank. The water level control component adjusts the water level in the main water tank to the same height. Then, the lifting frame assembly is lowered via the controller, and the ultrasonic generator is activated, thereby generating ultrasonic waves. The vibrator drives the water inside the main water tank to vibrate. The high-frequency vibration and cavitation effect generated by the ultrasonic waves in the water can effectively remove microscopic bubbles at the interface between the tire rubber surface and the water, destroy the air gap barrier, and promote the liquid to achieve tight, uniform and deep wetting of the tire surface. This overcomes the problems of random and uneven liquid adhesion and easy formation of air film in traditional natural immersion or spraying methods, ensuring the high consistency and repeatability of the initial condition of "wetting" in each test. This lays a reliable physical basis for subsequent accurate static balance comparison test, achieving local water wetting of the tire. After the operation is completed, the lifting frame assembly is raised, which causes the rotating component to drive the gear to rotate, further rotating the tire. After the tire comes to rest, the high point of the tire is marked. Static balance comparison test of the tire under dry and wet conditions can be achieved, improving the tire's full-condition safety assessment capability. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the first isometric structure of the present invention; Figure 2 This is a schematic diagram of the second isometric structure of the present invention; Figure 3 This is an exploded structural diagram of the present invention; Figure 4It is an enlarged structural diagram of the main water tank and water pump, etc. Figure 5 yes Figure 4 A partially enlarged structural diagram of section A in the middle; Figure 6 It is an enlarged structural diagram of the dual-axis motor and hub, etc. Figure 7 Figure 6 A partially enlarged structural diagram of section B in the middle; Figure 8 This is an enlarged structural diagram of the slider and support arm, etc. Figure 9 This is an enlarged structural diagram of components such as pivot pins and locking blocks; Figure 10 It is an enlarged structural diagram of structures such as springs and telescopic rods; Figure 11 It is an enlarged structural diagram of the fixed shaft and rollers, etc. Figure 12 It is an enlarged structural diagram of gears and racks.
[0018] The attached diagram shows the following markings: 101, base; 102, main water tank; 103, disc spring; 104, controller; 105, tire; 106, main shaft; 107, hub; 108, gear; 109, adjustable foot; 201, vertical plate; 202, lead screw; 203, dual-axis motor; 204, rotating shaft; 205, first conical wheel; 206, second conical wheel; 207, slider; 208, guide wheel; 209, reinforcing plate; 301, auxiliary water tank. 302. Overflow pipe; 303. Water delivery hose; 304. Water pump; 305. Tee pipe; 306. Return pipe; 307. Return valve; 308. Outlet pipe; 309. Outlet valve; 310. Connecting pipe; 311. Connecting valve; 401. Shaft pin; 402. Support arm; 403. Rack; 404. Fixed shaft; 405. Roller; 406. Guide groove; 501. Spring; 502. Telescopic rod; 503. Locking block; 504. Inclined end. Detailed Implementation
[0019] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
[0020] Example 1 like Figures 1 to 12As shown, an aviation tire static balance testing device of the present invention includes a base 101, a main water tank 102, disc springs 103, a controller 104, a tire 105, a main shaft 106, a wheel hub 107, and gears 108. A set of disc springs 103 is respectively arranged at the four corners of the bottom of the main water tank 102, and the bottom ends of the four sets of disc springs 103 are fixedly connected to the top of the base 101. An ultrasonic generator is arranged on the base 101, and multiple sets of ultrasonic transducers are arranged at the bottom of the main water tank 102. The ultrasonic generator is wire-connected to the multiple sets of ultrasonic transducers. A controller 104 is arranged at the top of the base 101. A wheel hub 107 is arranged on the main shaft 106, and the tire 105 is fitted onto the outside of the wheel hub 107. A set of gears 108 is arranged on the main shaft 106. The device also includes: The lifting frame assembly, which is mounted on the base 101, is used for lifting and rotating the tire 105; A water level control component, which is installed on the top of the base 101, is used to adjust the water level inside the main water tank 102; A rotating component, which is installed on the top of the base 101, is used to make the tire 105 rotate when the lifting component drives the tire 105 to rise. The lifting frame assembly includes a vertical plate 201, a lead screw 202, a dual-axis motor 203, a rotating shaft 204, a first conical wheel 205, a second conical wheel 206, a slider 207, and a guide wheel 208. The base 101 has an internal chamber. Two sets of vertical plates 201 are located at the top of the base 101. Each set of vertical plates 201 has a set of strip-shaped openings, and a set of lead screws 202 is rotatably mounted in each strip-shaped opening. The bottom ends of both sets of lead screws 202 extend into the chamber and are each equipped with a set of second conical wheels 206. A dual-axis motor is fixedly mounted within the chamber. The motor 203, a dual-axis motor 203, has two sets of output ends, each with a set of rotating shafts 204. Each set of rotating shafts 204 has a first conical wheel 205, and each first conical wheel 205 meshes with a second conical wheel 206. The dual-axis motor 203 is electrically connected to the controller 104. Each set of strip-shaped openings has a set of sliders 207 slidably arranged in them. Each set of sliders 207 is threadedly connected to a set of lead screws 202. Each set of sliders 207 has a slot, and each set of slots has two sets of guide wheels 208 rotatably arranged in them. The water level control assembly includes a secondary water tank 301, an overflow pipe 302, a water delivery hose 303, a water pump 304, a three-way pipe 305, a return pipe 306, a return valve 307, an external drain pipe 308, and an external drain valve 309. The secondary water tank 301 is located at the top of the base 101. The overflow pipe 302 is located at the rear end of the main water tank 102. The output end of the overflow pipe 302 is connected to the input end of the water delivery hose 303, and the output end of the water delivery hose 303 is connected to the top front end of the secondary water tank 301. The water pump 304 is located at the top of the base 101. The output end of the water pump 304 is connected to the three-way pipe 305. The first output end of the three-way pipe 305 is connected to the return pipe 306, and the return valve 307 is installed on the return pipe 306. The second output end of the three-way pipe 305 is connected to the external drain pipe 308, and the external drain valve 309 is installed on the external drain pipe 308.
[0021] In this embodiment, during use, the two ends of the main shaft 106 are placed in two sets of slots respectively. The outer walls of the main shaft 106 are in rolling contact with the two sets of guide wheels 208 in the slots. Then, the controller 104 operates the dual-axis motor 203 to rotate forward, thereby causing the two sets of first-order conical wheels 205 to drive the two sets of second-order conical wheels 206 to rotate. Since the slider 207 is threadedly connected to the lead screw 202, the two sets of sliders 207 descend synchronously, allowing the tire 105 to enter the main water tank 102 and partially contact the water, forming a locally wet state. Then, the dual-axis motor 203 is operated to rotate in the reverse direction, causing the two sets of sliders 207 to lift the tire 105 while rotating the assembly to rotate the gear 108. This further allows the main shaft 106 to drive the tire 105 to rotate freely, and the guide wheels 208 to rotate adaptively, realizing the static balance detection of the wet state of the tire 105, and injecting water into the main water tank. Inside tank 102, when the water level inside the main water tank 102 is higher than the overflow pipe 302, the water in the main water tank 102 is injected into the auxiliary water tank 301 with the cooperation of the overflow pipe 302 and the water delivery hose 303, so that the detected water level inside the main water tank 102 is consistent. When the tire 105 enters the main water tank 102, the water level rises, and the water is collected in the auxiliary water tank 301 with the cooperation of the overflow pipe 302 and the water delivery hose 303. After wetting, the water level inside the main water tank 102 drops significantly. The external drain valve 309 is closed and the return valve 307 is opened. The water pump 304 is started, so that the water collected in the auxiliary water tank 301 returns to the main water tank 102. The water level in the main water tank 102 is automatically adjusted, improving the convenience of operation. The external drain valve 309 is opened and the return valve 307 is closed. The water pump 304 is started to drain the water in the auxiliary water tank 301.
[0022] Example 2 like Figures 1 to 12As shown, an aviation tire static balance testing device of the present invention includes a base 101, a main water tank 102, disc springs 103, a controller 104, a tire 105, a main shaft 106, a wheel hub 107, and gears 108. A set of disc springs 103 is respectively arranged at the four corners of the bottom of the main water tank 102, and the bottom ends of the four sets of disc springs 103 are fixedly connected to the top of the base 101. An ultrasonic generator is arranged on the base 101, and multiple sets of ultrasonic transducers are arranged at the bottom of the main water tank 102. The ultrasonic generator is wire-connected to the multiple sets of ultrasonic transducers. A controller 104 is arranged at the top of the base 101. A wheel hub 107 is arranged on the main shaft 106, and the tire 105 is fitted onto the outside of the wheel hub 107. A set of gears 108 is arranged on the main shaft 106. The device also includes: The lifting frame assembly, which is mounted on the base 101, is used for lifting and rotating the tire 105; A water level control component, which is installed on the top of the base 101, is used to adjust the water level inside the main water tank 102; A rotating component, which is installed on the top of the base 101, is used to make the tire 105 rotate when the lifting component drives the tire 105 to rise. The lifting frame assembly includes a vertical plate 201, a lead screw 202, a dual-axis motor 203, a rotating shaft 204, a first conical wheel 205, a second conical wheel 206, a slider 207, and a guide wheel 208. The base 101 has an internal chamber. Two sets of vertical plates 201 are located at the top of the base 101. Each set of vertical plates 201 has a set of strip-shaped openings, and a set of lead screws 202 is rotatably mounted in each strip-shaped opening. The bottom ends of both sets of lead screws 202 extend into the chamber and are each equipped with a set of second conical wheels 206. A dual-axis motor is fixedly mounted within the chamber. The motor 203, a dual-axis motor 203, has two sets of output ends, each with a set of rotating shafts 204. Each set of rotating shafts 204 has a first conical wheel 205, and each first conical wheel 205 meshes with a second conical wheel 206. The dual-axis motor 203 is electrically connected to the controller 104. Each set of strip-shaped openings has a set of sliders 207 slidably arranged in them. Each set of sliders 207 is threadedly connected to a set of lead screws 202. Each set of sliders 207 has a slot, and each set of slots has two sets of guide wheels 208 rotatably arranged in them. The water level control assembly includes a secondary water tank 301, an overflow pipe 302, a water delivery hose 303, a water pump 304, a three-way pipe 305, a return pipe 306, a return valve 307, an external drain pipe 308, and an external drain valve 309. The secondary water tank 301 is located at the top of the base 101. The overflow pipe 302 is located at the rear end of the main water tank 102. The output end of the overflow pipe 302 is connected to the input end of the water delivery hose 303, and the output end of the water delivery hose 303 is connected to the top front end of the secondary water tank 301. The water pump 304 is located at the top of the base 101. The output end of the water pump 304 is connected to the three-way pipe 305. The first output end of the three-way pipe 305 is connected to the return pipe 306, and the return valve 307 is installed on the return pipe 306. The second output end of the three-way pipe 305 is connected to the external drain pipe 308, and the external drain valve 309 is installed on the external drain pipe 308. The rotating assembly includes a pin 401, a support arm 402, a rack 403, a fixed shaft 404, a roller 405, a guide groove 406, and a check valve assembly. The bottom end of the support arm 402 is hinged to the top end of the base 101 via the pin 401. A torsion spring is installed inside the pin 401, which tilts the top end of the support arm 402 forward. A rack 403 is installed at the rear end of the support arm 402. A fixed shaft 404 is installed at one end of the slider 207, and a roller 405 is rotatably installed at one end of the fixed shaft 404. A closed guide groove 406 is provided on the side end of the support arm 402. The guide groove 406 consists of an arc-shaped groove and a straight groove. The roller 405 rolls in contact with the inner wall of the guide groove 406. A check valve assembly is installed at the connection between the bottom of the arc-shaped groove and the bottom of the straight groove. The check valve assembly includes a spring 501, a telescopic rod 502, a locking block 503, and an inclined end 504. The guide groove 406 has a positioning groove on its side wall. The locking block 503 is slidably disposed in the positioning groove. The locking block 503 has an inclined end 504 and a concave groove. The spring 501 and the telescopic rod 502 are disposed in the concave groove. It also includes a reinforcing plate 209, which is provided between the base 101 and the vertical plate 201; It also includes adjustable feet 109, and a set of adjustable feet 109 is provided at each of the four corners of the base 101; It also includes a connecting pipe 310 and a connecting valve 311. A connecting pipe 310 is provided between the main water tank 102 and the auxiliary water tank 301, and a connecting valve 311 is installed on the connecting pipe 310. A smooth, wear-resistant coating is provided on the inclined end 504; The dual-axis motor 203 is a self-locking motor.
[0023] In this embodiment, during use, the two ends of the main shaft 106 are placed in two sets of slots respectively. The outer side wall of the main shaft 106 rolls in contact with the two sets of guide wheels 208 in the slots. Then, the controller 104 operates the dual-axis motor 203 to rotate forward, thereby causing the two sets of first-order conical wheels 205 to drive the two sets of second-order conical wheels 206 to rotate. Since the slider 207 is threadedly connected to the lead screw 202, the two sets of sliders 207 descend synchronously. The roller 405 is at the connection between the top of the arc-shaped slot and the top of the straight slot. When the slider 207 drives the tire 105, the main shaft 106 and the hub 107 to descend, the torsion spring causes the support arm to... The top of 402 tilts forward, causing roller 405 to enter the arc-shaped groove. As roller 405 moves vertically downwards, support arm 402 swings along the arc-shaped groove, causing rack 403 to move away from gear 108. This keeps tire 105 stationary as it enters the main water tank 102. At this point, roller 405 passes through stop block 503 and remains stationary, and rack 403 is directly above gear 108. After tire 105 is fully wetted, slider 207 raises tire 105, and roller 405 rises linearly in the straight groove, keeping rack 403 vertical. Above gear 108, as gear 108 continues to rise, it meshes with rack 403. Rack 403 remains stationary, while gear 108 rises linearly, causing it to rotate. This further enables tire 105 to rotate, achieving static balance detection of tire 105 in a wet state. Water is injected into the main water tank 102. When the water level in the main water tank 102 is higher than the overflow pipe 302, water from the main water tank 102 is injected into the auxiliary water tank 301 through the cooperation of the overflow pipe 302 and the water delivery hose 303, ensuring consistent detection water levels within the main water tank 102. When the tire... Water 105 enters the main water tank 102, raising the water level. The water is collected in the auxiliary water tank 301 through the overflow pipe 302 and the water delivery hose 303. After wetting, the water level in the main water tank 102 drops significantly. The drain valve 309 is closed, the return valve 307 is opened, and the water pump 304 is started, so that the water collected in the auxiliary water tank 301 returns to the main water tank 102. This also achieves automatic adjustment of the water level in the main water tank 102, improving the ease of operation. The drain valve 309 is opened and the return valve 307 is closed. The water pump 304 is started, thus draining the water in the auxiliary water tank 301.
[0024] The main functions achieved by this invention are: 1. To achieve simultaneous comparative testing of static balance in both dry and wet conditions of tire 105; 2. The water inside the main water tank 102 is subjected to ultrasonic vibration by an ultrasonic transducer to remove interface bubbles and achieve uniform, tight, and repeatable adhesion of liquid to the surface of the tire 105, so as to generate a standardized test input condition. 3. The rotating component enables static wetting during descent and automatic rotation during ascent; 4. By cooperating with the auxiliary water tank, overflow pipe 302, and water delivery hose 303, the liquid level height during each immersion is ensured to be absolutely constant, thus controlling the key variable of "immersion depth".
[0025] The static balance testing equipment for aircraft tires of the present invention can be installed, connected, or set up in a manner that is common in mechanical methods. Any method that can achieve the desired beneficial effect can be implemented. The controller 104, dual-axis motor 203, water pump 304, ultrasonic generator, and ultrasonic transducer of the static balance testing equipment for aircraft tires of the present invention are commercially available. Technical personnel in the industry only need to install and operate the equipment according to the accompanying instruction manual, without requiring any creative effort from those skilled in the art.
[0026] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A static balance testing device for aircraft tires, characterized in that, The system includes a base (101), a main water tank (102), disc springs (103), a controller (104), a tire (105), a main shaft (106), a hub (107), and gears (108). A set of disc springs (103) is installed at each of the four corners of the bottom of the main water tank (102), and the bottom ends of all four sets of disc springs (103) are fixedly connected to the top of the base (101). An ultrasonic generator is installed on the base (101), and multiple sets of ultrasonic transducers are installed at the bottom of the main water tank (102). The ultrasonic generator is wire-connected to the multiple sets of ultrasonic transducers. A controller (104) is installed at the top of the base (101). A hub (107) is installed on the main shaft (106), and the tire (105) is fitted onto the outside of the hub (107). A set of gears (108) is installed on the main shaft (106). The system also includes: A lifting frame assembly, which is mounted on a base (101), is used for lifting and rotating the tires (105); A water level control assembly, which is mounted on the top of the base (101), is used to adjust the water level inside the main water tank (102); A rotating component, which is mounted on the top of the base (101), is used to make the tire (105) rotate when the lifting component drives the tire (105) to rise.
2. The static balance testing equipment for aircraft tires as described in claim 1, characterized in that, The lifting frame assembly includes a vertical plate (201), a lead screw (202), a dual-axis motor (203), a rotating shaft (204), a first conical wheel (205), a second conical wheel (206), a slider (207), and a guide wheel (208). The base (101) has an internal chamber. Two sets of vertical plates (201) are located at the top of the base (101). Each set of vertical plates (201) has a set of strip-shaped openings, and a set of lead screws (202) is rotatably installed in each strip-shaped opening. The bottom ends of both sets of lead screws (202) extend into the chamber and are each equipped with a set of second conical wheels (206). A dual-axis motor (203) is fixedly installed in the chamber. The dual-axis motor (203) has two sets of output ends, each with a set of rotating shafts (204). Each set of rotating shafts (204) has a first cone wheel (205). Each first cone wheel (205) meshes with a second cone wheel (206). The dual-axis motor (203) is electrically connected to the controller (104). Each set of strip openings has a set of sliders (207) that slides. Each set of sliders (207) is threadedly connected to a set of lead screws (202). Each set of sliders (207) has a slot. Each set of slots has two sets of guide wheels (208) that rotate.
3. The static balance testing equipment for aircraft tires as described in claim 1, characterized in that, The water level control assembly includes a secondary water tank (301), an overflow pipe (302), a water delivery hose (303), a water pump (304), a tee pipe (305), a return pipe (306), a return valve (307), an external drain pipe (308), and an external drain valve (309). The secondary water tank (301) is located at the top of the base (101), and the overflow pipe (302) is located at the rear end of the main water tank (102). The outlet of the overflow pipe (302) is connected to the inlet of the water delivery hose (303). The output end of the water supply hose (303) is connected to the top front end of the auxiliary water tank (301). A water pump (304) is installed at the top of the base (101). A three-way pipe (305) is installed at the output end of the water pump (304). A return pipe (306) is installed at the first output end of the three-way pipe (305). A return valve (307) is installed on the return pipe (306). An external drain pipe (308) is installed at the second output end of the three-way pipe (305). An external drain valve (309) is installed on the external drain pipe (308).
4. The static balance testing equipment for aircraft tires as described in claim 2, characterized in that, The rotating assembly includes a pivot pin (401), a support arm (402), a rack (403), a fixed shaft (404), a roller (405), a guide groove (406), and a check valve assembly. The bottom end of the support arm (402) is hinged to the top end of the base (101) via the pivot pin (401). A torsion spring is provided inside the pivot pin (401), which causes the top end of the support arm (402) to tilt forward. A rack (403) is provided at the rear end of the support arm (402). A fixed shaft (404) is provided at one end of the block (207), and a roller (405) is rotatably provided at one end of the fixed shaft (404). A closed guide groove (406) is provided at the side end of the support arm (402). The guide groove (406) is composed of an arc-shaped groove and a straight groove. The roller (405) rolls in contact with the inner wall of the guide groove (406). A check valve assembly is provided at the connection between the bottom of the arc-shaped groove and the bottom of the straight groove.
5. The static balance testing equipment for aircraft tires as described in claim 4, characterized in that, The check valve assembly includes a spring (501), a telescopic rod (502), a locking block (503), and a beveled end (504). The guide groove (406) has a positioning groove on its side wall. The locking block (503) is slidably disposed in the positioning groove. The locking block (503) has a beveled end (504) and a concave groove. The spring (501) and the telescopic rod (502) are disposed in the concave groove.
6. The static balance testing equipment for aircraft tires as described in claim 2, characterized in that, It also includes a reinforcing plate (209), which is provided between the base (101) and the vertical plate (201).
7. The static balance testing equipment for aircraft tires as described in claim 1, characterized in that, It also includes adjustable feet (109), and a set of adjustable feet (109) is provided at each of the four corners of the base (101).
8. The static balance testing equipment for aircraft tires as described in claim 3, characterized in that, It also includes a connecting pipe (310) and a connecting valve (311). A connecting pipe (310) is provided between the main water tank (102) and the auxiliary water tank (301), and a connecting valve (311) is installed on the connecting pipe (310).
9. The static balance testing equipment for aircraft tires as described in claim 5, characterized in that, A smooth, wear-resistant coating is provided on the inclined end (504).
10. The static balance testing equipment for aircraft tires as described in claim 2, characterized in that, The dual-axis motor (203) is a self-locking motor.