An automobile part service life testing device

Abstract

The application belongs to the technical field of automobile parts life test, in particular to a kind of automobile parts service life test device, including test body;The test body is built-in ozone generator and temperature and humidity regulator;Through servo motor drive fixed frame and tire idling, detect the conventional data under the setting environment, idling reaches the setting duration, No. 1 electric slide frame drives storage tank and tire to move down, tire is covered in sandstone pile through through slot and rubs, simulate the impact and wear of sandstone pavement, intermittent up and down movement of tire is required in test, backfill medium when sliding down, test when sliding down, can be operated with mechanical hand, ensure the authenticity of sandstone road condition simulation, sandstone groove can place big and small particle sand, also can add gravel, glass fragments and other medium, simulate the wear and tear and puncture of different road conditions on tire, satisfy various test scenes, ensure the accuracy and reference value of tire service life test.

Description

Technical Field

[0001] This invention belongs to the field of automotive component life testing technology, specifically an automotive component life testing device. Background Technology

[0002] New energy vehicles refer to automobiles that use electricity as a power source and integrate advanced technologies in vehicle power control and drive. They mainly include pure electric vehicles, plug-in hybrid electric vehicles, and fuel cell vehicles. They are characterized by energy saving and emission reduction, quiet operation, and low operating costs, and are an important direction for the green transformation of the global automotive industry.

[0003] The automotive components of new energy vehicles cover a wide range of categories, from batteries, motors and electronic controls to body, chassis, thermal management systems and intelligent connected components. Among them, tires, as the only safety component in contact with the ground, have special requirements. In order to support heavier battery packs, provide lower rolling resistance to extend driving range, and at the same time cope with the stronger wear caused by instantaneous high torque output, tires for new energy vehicles often adopt reinforced structures, low heat generation rubber compounds and deeper tread patterns.

[0004] The ozone and humid heat accelerated aging test device for traditional new energy vehicle tires is an environmental simulation test equipment, which usually consists of a sealed test chamber, an ozone generation and concentration control system, a heating and humidification system, and a sample rack. The device can conduct accelerated aging tests on tire rubber materials under set temperature, relative humidity, and constant ozone concentration conditions to simulate the aging effect of tires in a high-temperature, humid environment with industrial ozone, thereby evaluating their durability against cracking, hardening, and performance degradation.

[0005] Traditional life tests for new energy vehicle tires are typically conducted in a controlled environment where ozone and humidity levels can be adjusted to simulate tire performance under different environmental conditions. During this process, the tires are placed in a specific device for static testing to simulate prolonged parking. Dynamic testing is also required to simulate the actual conditions of the vehicle during operation. However, current testing equipment is primarily used for static testing, while dynamic testing only allows the tires to idle within the device. Although this test can simulate actual driving conditions, it is difficult to simulate the impact of actual road conditions on the tires within the set environment, thus easily affecting the tire life test results.

[0006] Therefore, the present invention provides a device for testing the service life of automotive parts. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: An automotive parts lifespan testing device according to this invention includes a testing body; the testing body has an ozone generator and a temperature and humidity regulator built into it; two connecting pipes are fixedly connected inside the testing body, and the two connecting pipes are respectively connected to the ozone generator and the temperature and humidity regulator; a first electric slide is slidably connected inside the testing body; a storage box is fixedly connected to the first electric slide; a servo motor is fixedly connected inside the storage box; a fixed frame is fixedly connected to the output end of the servo motor; a through groove is opened inside the testing body and below the fixed frame; a second electric slide is slidably connected inside the testing body and below the through groove; a sliding plate is fixedly connected to the second electric slide; a sand and gravel groove is opened on the sliding plate, and the shape of the sand and gravel groove corresponds to the shape of the through groove.

[0009] Preferably, a soil groove is formed on the upper surface of the sliding plate at the end away from the sand and gravel trough, and the shape of the soil groove corresponds to the shape of the through groove; an arc-shaped groove is formed at the center of both the soil groove and the sand and gravel trough.

[0010] Preferably, an electric cylinder is fixedly connected to the side of the test body near the fixed frame; an arc-shaped plate is fixedly connected to the output end of the electric cylinder; a spray head is fixedly connected to the inner side of the arc-shaped plate; a water pump is fixedly connected to the inside of the test body near the top of the arc-shaped plate; a No. 1 water pipe is fixedly connected between the output end of the water pump and the spray head; and a No. 2 water pipe is fixedly connected to the input end of the water pump.

[0011] Preferably, both the sand and gravel trough and the soil trough have two drainage channels; both the sand and gravel trough and the soil trough have filter screens fixedly connected to their drainage channels; and the interior of the testing machine body has a storage tank located below the through channel.

[0012] Preferably, the inner wall of the sliding plate is slidably connected with multiple intercepting blocks, and two intercepting blocks are installed in a group on both sides of the filter plate near the arc-shaped groove; the bottom end of the intercepting block is fixedly connected to an elastic element.

[0013] Preferably, multiple upper scrapers are slidably connected to the sliding plate, and two opposing upper scrapers are set as a group; two lower push plates are fixedly connected to the bottom of the upper scraper; a scraper is fixedly connected to the bottom center of the upper scraper, and the scraper is located between the two lower push plates, and the scraper can scrape against the upper surface of the filter screen; a transmission component is provided inside the sliding plate, which is used to drive the two upper scrapers to slide.

[0014] Preferably, the transmission assembly includes a cylinder, a bidirectional air cylinder, a connecting pipe, a pressing rod, and a third elastic element; two cylinders are fixedly connected to a sliding plate; two bidirectional air cylinders are fixedly connected inside the sliding plate, with two upper scrapers fixedly connected to the two output ends of the bidirectional air cylinders respectively, and two second elastic elements are built into the bidirectional air cylinders; the connecting pipe is fixedly connected between the cylinders and the bidirectional air cylinders; the pressing rod is slidably connected inside the testing machine body, and the pressing rod is located below the storage box, and the pressing rod can press corresponding to the output end position of the cylinder; the third elastic element is fixedly connected between the pressing rod and the testing machine body.

[0015] Preferably, an electromagnetic three-way valve is fixedly connected to the end of the second water pipe away from the water pump; an inlet pipe is fixedly connected to the end of the electromagnetic three-way valve away from the second water pipe; and a return pipe is fixedly connected to the bottom end of the electromagnetic three-way valve.

[0016] Preferably, a filter box is fixedly connected to the end of the return pipe away from the electromagnetic three-way valve. The filter box is located in the storage tank, and water inlet plates are fixedly connected to both sides of the filter box. A top flow pipe is fixedly connected to the top of the filter box.

[0017] Preferably, a rubber scraper is fixedly connected to the top of the arc-shaped plate; multiple friction protrusions are fixedly connected to the rubber scraper, and the friction protrusions are located at the end of the rubber scraper away from the arc-shaped plate; multiple drain strips are fixedly connected to the bottom of the arc-shaped plate, and the drain strips are made of flexible material.

[0018] The beneficial effects of this invention are as follows: 1. The automotive parts lifespan testing device of this invention involves fixing a new energy vehicle tire to a fixed frame with bolts, placing sand and gravel into a sand and gravel trough, and using a second electric slide to drive a sliding plate into the testing body, aligning the sand and gravel trough with the through-channel and sealing the body. The body contains an ozone generator and a temperature and humidity regulator, which delivers ozone and regulates temperature and humidity through a connecting pipe to simulate a complex environment. After the environmental parameters stabilize, a static test is first performed to record the crack depth and rubber hardening and rebound. Subsequently, a dynamic test is performed, in which a servo motor drives the fixed frame and tire to idle, and the set cycle is tested. Under normal conditions, after a set time of idling, the first electric slide moves the storage box and tire downwards. The tire is pressed against the sand and gravel pile through the channel to simulate the impact and wear of the sand and gravel road surface. During the test, the tire needs to be moved up and down intermittently. When sliding up, the medium is backfilled, and when sliding down, the test is performed. It can be operated with a robotic arm to ensure the realism of the sand and gravel road condition simulation. The sand and gravel trough can hold large and small sand and gravel particles, and can also add media such as gravel and glass fragments to simulate the wear and puncture of the tire under different road conditions, meet diverse test scenarios, and ensure the accuracy and reference value of tire life test.

[0019] 2. The automotive parts lifespan testing device of the present invention connects to an external water source via a second water pipe. An electric cylinder drives an arc-shaped plate to fit the tire. A water pump delivers water through the second water pipe to a spray head via the first water pipe, spraying water at an angle onto the tire. This simulates wear conditions on wet gravel or muddy roads during rain, covering more climatic conditions, ensuring comprehensive testing, and avoiding deviations in lifespan data due to a lack of water-related testing conditions. Furthermore, when the test is completed or when mud or other impurities adhere to the tire, affecting the gravel road test, the spray head can be used to rinse the tire surface to reduce impurities and ensure test accuracy. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the connecting pipe in this invention; Figure 3 This is a schematic diagram of the extrusion rod in this invention; Figure 4 This is a schematic diagram of the storage tank in this invention; Figure 5 This is a schematic diagram of the structure of the No. 1 electric slide in this invention; Figure 6 This is a schematic diagram of the sliding plate in this invention; Figure 7 This is a schematic diagram of the interception block in this invention; Figure 8 This is a schematic diagram of the bidirectional air cylinder in this invention; Figure 9 This is a schematic diagram of the structure of the rubber scraper in this invention.

[0022] In the diagram: 1. Test body; 11. Connecting pipe; 12. Electric slide No. 1; 13. Storage box; 14. Servo motor; 15. Fixing frame; 16. Electric slide No. 2; 17. Sliding plate; 18. Sand and gravel trough; 2. Soil trough; 3. Electric cylinder; 31. Arc plate; 32. Spray head; 33. Water pump; 34. Water pipe No. 1; 35. Water pipe No. 2; 4. Filter screen; 41. Storage tank; 5. Interception block; 51. Elastic component No. 1; 6. Upper scraper; 61. Lower push plate; 62. Scraper; 7. Cylinder; 71. Two-way air cylinder; 72. Connecting pipe; 73. Extrusion rod; 74. Elastic component No. 3; 8. Electromagnetic three-way valve; 81. Water inlet pipe; 82. Return pipe; 9. Filter box; 91. Top flow pipe; 92. Rubber scraper; 93. Friction protrusion; 94. Drain strip. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 7 As shown in the embodiment of the present invention, an automotive parts lifespan testing device includes a testing body 1; the testing body 1 has an ozone generator and a temperature and humidity regulator built in; two connecting pipes 11 are fixedly connected inside the testing body 1, and the two connecting pipes 11 are respectively connected to the ozone generator and the temperature and humidity regulator; a first electric slide 12 is slidably connected inside the testing body 1; a storage box 13 is fixedly connected to the first electric slide 12; a servo motor 14 is fixedly connected inside the storage box 13; a fixing frame 15 is fixedly connected to the output end of the servo motor 14; a through groove is opened inside the testing body 1 and below the fixing frame 15; the inside of the testing body 1 is located in... A second electric slide 16 is slidably connected below the through groove; a sliding plate 17 is fixedly connected to the second electric slide 16; a sand and gravel trough 18 is opened on the sliding plate 17, and the shape of the sand and gravel trough 18 corresponds to the shape of the through groove; when testing the service life of tires of new energy vehicle components, the new energy vehicle tires are fixed to the fixing frame 15 with bolts, and then sand and gravel are placed in the sand and gravel trough 18. The second electric slide 16 drives the sliding plate 17 to slide into the interior of the test body 1, aligning the sand and gravel trough 18 with the through groove of the test body 1. After the test body 1 is closed, the ozone generator and temperature and humidity regulator built into the test body 1 start working, and the ozone generator and temperature and humidity regulator are connected to the test body through two connecting pipes 11. The machine 1 internally supplies ozone and regulates internal temperature and humidity to simulate the complex environmental conditions of tire use. After the environmental parameters reach the set parameters and stabilize, a static test is performed on the new energy vehicle tire. The machine stops for inspection after a set time, checking crack depth and rubber hardening and rebound, and also performing static balance testing. Subsequently, a dynamic test is performed on the tire. The servo motor 14 is started to drive the fixed frame 15 to rotate, thereby driving the tire fixed on the fixed frame 15 to spin freely. Tire spinning allows for the detection of routine data under the set environment and also performs dynamic balance testing. After the tire spins freely for the set time, the first electric slide 12 drives the storage box 13 and the tire to slide down, allowing the tire to... The tire can reach the top of the gravel trough 18 through the channel. The tire is pressed into the gravel pile in the gravel trough 18 and rubs against it, thereby simulating the friction and impact of the gravel road surface on the tire during actual driving. It should be noted that the gravel needs to be backfilled. The storage box 13 intermittently moves the tire up and down. When the tire slides up, the medium is backfilled. When the tire slides down, the test is performed. A robotic arm can be added to the test body 1 to ensure that the complete gravel road condition test is simulated. This makes the test environment closer to the actual use scenario of the tire, solves the problem that traditional tests cannot reproduce the impact of real road conditions, and replaces the traditional conventional tire spinning test method. It can simulate the wear of the tire under real road conditions and ensure the accuracy of the tire life test. When using the gravel filling trough 18 to simulate gravel road conditions, the gravel trough 18 can hold not only large particles of gravel, but also small particles of gravel for simulation. Furthermore, other media can be added to the gravel trough 18 for simulation, such as adding angular gravel or glass fragments, to simulate the wear and puncture damage to the tire under different road conditions. This meets the needs of different testing scenarios, allowing tire life testing to cover more complex road conditions that may be encountered in actual use, improving the reference value of the test results, and making the measured tire life data more consistent with the performance under real-world use conditions.

[0025] A soil trough 2 is formed on the upper surface of the sliding plate 17 at the end away from the gravel trough 18, and the shape of the soil trough 2 corresponds to the shape of the through trough. An arc-shaped groove is formed at the center of both the soil trough 2 and the gravel trough 18. When testing the service life of new energy vehicle tires, different particulate media can be placed in the gravel trough 18 to simulate dry road conditions, while soft media can be placed in the soil trough 2 to simulate wet road conditions. For example, soft mud can be placed in the soil trough 2. Regardless of the medium, it is placed in the arc-shaped groove. The storage box 13 drives the tire to rotate and test by adhering to the medium in the arc-shaped groove, which reduces the random splashing of the medium. When simulating different road conditions, it is only necessary to slide the second electric slide 16 to switch the position of the gravel trough 18 and the soil trough 2 so that the corresponding medium area is aligned with the through trough. There is no need to repeatedly disassemble and replace the medium, which ensures the switching efficiency of the test. It can quickly switch between two test scenarios, dry gravel road conditions and wet muddy road conditions, in the same device, which enriches the coverage of the test.

[0026] like Figures 1 to 5 , Figure 9As shown, an electric cylinder 3 is fixedly connected to one side of the test body 1 near the fixed frame 15; an arc-shaped plate 31 is fixedly connected to the output end of the electric cylinder 3; a spray head 32 is fixedly connected to the inner side of the arc-shaped plate 31; a water pump 33 is fixedly connected to the inside of the test body 1 near the top of the arc-shaped plate 31; a first water pipe 34 is fixedly connected between the output end of the water pump 33 and the spray head 32; a second water pipe 35 is fixedly connected to the input end of the water pump 33; when the tire is being tested for life inside the test body 1, a water source is connected to the second water pipe 35, the output end of the electric cylinder 3 drives the arc-shaped plate 31 to fit close to the tire, and the water pump 33 draws water from the second water pipe 35 and sends it to the tire via the first water pipe 34. The spray nozzle at 32 angles sprays water onto the tires, simulating tire wear on wet, sandy, or muddy roads in rainy conditions. This closely resembles real-world rainy driving scenarios, allowing the test to cover more climatic conditions and ensuring comprehensive test results. It also reduces the possibility of inaccurate lifespan data due to a lack of testing in wading and rain conditions. Furthermore, it enables dynamic balancing. Additionally, at the end of tire testing or when impurities such as mud affect testing on sandy roads, the spray nozzle at 32 angles can wash away impurities from the tire surface, reducing their adhesion and ensuring the accuracy of the tire test.

[0027] like Figures 1 to 7 , Figure 9 As shown, both the sand and gravel trough 18 and the soil trough 2 have two drainage troughs; both the sand and gravel trough 18 and the soil trough 2 have filter screens 4 fixedly connected to their drainage troughs; the interior of the test body 1 has a storage tank 41 located below the through channel; when water is sprayed onto the tires, the water can flow through the two drainage troughs into the storage tank 41 at the bottom of the test body 1 for temporary storage, and the water passing through the drainage troughs is filtered by the filter screens 4 to remove impurities such as mud and gravel, allowing only the water to flow into the storage tank 41, reducing the accumulation of large particles of impurities in the storage tank 41 and occupying storage space, and also facilitating the subsequent unified treatment of wastewater.

[0028] like Figures 1 to 8 As shown, multiple intercepting blocks 5 are slidably connected to the inner wall of the sliding plate 17. Two intercepting blocks 5 are installed as a group on both sides of the filter plate 4 near the arc-shaped groove. The bottom end of the intercepting block 5 is fixed with a first elastic element 51. When different media are placed in the arc-shaped grooves of the sand and gravel trough 18 and the soil trough 2, the tire rubs against the media. Even with the speed controlled, some media can still splash. By using the four intercepting blocks 5 to be squeezed and pushed up by the four first elastic elements 51, they are intercepted on both sides of the arc-shaped groove, which can make the arc-shaped groove fit the tire simulation better. The splashed media is blocked and intercepted by the intercepting blocks 5, but it can still rub against the side of the tire, ensuring the accuracy of the tire life test.

[0029] Multiple upper scrapers 6 are slidably connected to the sliding plate 17, and two opposing upper scrapers 6 are set as a group; two lower push plates 61 are fixedly connected to the bottom of the upper scraper 6; a scraper 62 is fixedly connected to the center of the bottom of the upper scraper 6, and the scraper 62 is located between the two lower push plates 61, and the scraper 62 can scrape against the upper surface of the filter screen plate 4; a transmission assembly is provided inside the sliding plate 17, which is used to drive the two upper scrapers 6 to slide; when backfilling splashed media, the storage box 13 slides up to drive the transmission assembly to reset, and the transmission assembly synchronously pulls the two upper scrapers 6 closer to each other, and the two lower push plates 6 slide closer to each other. The push plate 61, in conjunction with the central scraper 62, scrapes the surfaces of the sand and gravel trough 18 and the filter screen 4. This not only pushes the splashed medium back into the arc-shaped groove to ensure the medium's friction test on the tire, but also ensures the filtration effect of the filter screen 4. When the storage box 13 slides down, it can drive the transmission component to control the two upper scrapers 6 to move away, and the lower push plate 61 and scraper 62 to move away as well, ensuring the normal operation of the tire test. When the upper scraper 6 drives the lower push plate 61 to slide, it can squeeze the inclined surface of the intercepting block 5, pressing the intercepting block 5 into the interior of the sliding plate 17. The first elastic element 51 contracts and is subjected to force, so as to facilitate the backfilling of the medium.

[0030] The transmission assembly includes cylinders 7, bidirectional air cylinders 71, connecting pipes 72, extrusion rods 73, and elastic element 74. Two cylinders 7 are fixedly connected to sliding plate 17. Two bidirectional air cylinders 71 are fixedly connected inside sliding plate 17, with two upper scrapers 6 fixedly connected to their two output ends, and two elastic elements are built into each bidirectional air cylinder 71. The connecting pipe 72 is fixedly connected between cylinders 7 and bidirectional air cylinders 71. The extrusion rod 73 is slidably connected inside the testing machine body 1, and is located below the storage box 13, allowing it to extrude pressure corresponding to the output end of cylinders 7. The elastic element 74 is fixedly connected between the extrusion rod 73 and the testing machine body 1. When backfilling splashed media, the storage box 13 slides upwards to release the pressure on the extrusion rod 73. The elastic element 74 returns to its original position, pushing the upper compression rod 73 back to its original position. At this time, the compressed cylinder 7 also returns to its original position. The two elastic elements in the bidirectional air cylinder 71 pull the two output ends, causing the two connected upper scrapers 6 to move closer to each other. The lower push plate 61 and scraper 62 push the splashed medium into the arc-shaped groove. When the storage box 13 slides down again, the storage box 13 can press down the compression rod 73. The compression rod 73 compresses the elastic element 74, causing it to contract. At the same time, it compresses the cylinder 7, causing the gas inside to be sent to the center of the bidirectional air cylinder 71 through the connecting pipe 72. This pushes the two output ends of the bidirectional air cylinder 71 to extend, overcoming the pulling force of the elastic element 74 and spreading the two upper scrapers 6 away from the arc-shaped groove area. This reduces the obstruction to the tire rotation test and completes the automatic backfilling of the medium in conjunction with the up and down test of the tire.

[0031] like Figures 1 to 7 , Figure 9As shown, an electromagnetic three-way valve 8 is fixedly connected to the end of the second water pipe 35 away from the water pump 33; an inlet pipe 81 is fixedly connected to the end of the electromagnetic three-way valve 8 away from the second water pipe 35; a return pipe 82 is fixedly connected to the bottom end of the electromagnetic three-way valve 8; when the water sprayed from the nozzle 32 falls into the storage tank 41 for temporary storage, the water source originally connected to the second water pipe 35 is connected to the inlet pipe 81, and the electromagnetic three-way valve 8 controls the connection state between the inlet pipe 81 and the return pipe 82 and the second water pipe 35. When a large amount of water is stored in the storage tank 41, the electromagnetic three-way valve 8... The return pipe 82 is connected to the second water pipe 35. The water pump 33 draws water from the storage tank 41 through the return pipe 82 for circulating spraying, realizing the recycling of water resources and reducing water waste during the test. When the water needs to be replaced, the electromagnetic three-way valve 8 is controlled to switch the connection state. The water inlet pipe 81 is connected to the second water pipe 35 to draw fresh water from the outside. At the same time, when the filtered sewage is recycled, the mud and sand impurities have been filtered out, reducing the possibility of clogging the spray nozzle 32 spray holes and ensuring that the spray test can be carried out stably.

[0032] A filter box 9 is fixedly connected to the end of the return pipe 82 away from the electromagnetic three-way valve 8. The filter box 9 is located inside the storage tank 41, and water inlet plates are fixedly connected to both sides of the filter box 9. A top flow pipe 91 is fixedly connected to the top of the filter box 9. When the water in the storage tank 41 is pumped and circulated, the filter box 9 is fixed at the bottom of the storage tank 41 at one end of the return pipe 82. The water inlet plates on both sides of the filter box 9 can filter the sewage again, reducing the blockage caused by impurities being pumped by the water pump 33. The top flow pipe 91 is fixed to the top of the filter box 9. The water in the storage tank 41 is divided into an upper layer and a lower layer. The lower layer is mostly accumulated impurities mixed with sewage. The upper layer of the storage tank 41 has fewer impurities. The top flow pipe 91 is used to pump the water from the upper layer of the storage tank 41 to ensure the amount of circulating water.

[0033] like Figures 1 to 4 , Figure 9 As shown, a rubber scraper 92 is fixedly attached to the top of the arc-shaped plate 31; multiple friction protrusions 93 are fixedly attached to the rubber scraper 92, and the friction protrusions 93 are located at the end of the rubber scraper 92 away from the arc-shaped plate 31; multiple water-draining strips 94 are fixedly attached to the bottom of the arc-shaped plate 31, and the water-draining strips 94 are made of flexible material; when water is sprayed near the tire by the arc-shaped plate 31, the rubber scraper 92 can deform and conform to the surface of the tire, and work with the multiple friction protrusions 93 to rub the surface of the tire, scraping off the impurities attached to the rubber scraper 92, reducing the long-term adhesion of impurities to the tire surface, which affects the subsequent dynamic test and the judgment of the tire's true wear condition by dynamic balancing. At the same time, the flexible water-draining strips 94 can, when the arc-shaped plate 31 is close to the tire, block the gap between the tire side and the through groove with the multiple water-draining strips 94, reducing the splashing of water and medium from the gap during the rotation of the tire during the water spray test, and keeping the test environment clean.

[0034] Working Process: When conducting lifespan tests on tires used in new energy vehicles, the tires are bolted to the mounting bracket 15. Gravel is then placed in the gravel trough 18. The second electric slide 16 drives the sliding plate 17 into the testing machine body 1, aligning the gravel trough 18 with the through-slot of the testing machine body 1. After the testing machine body 1 is sealed, the ozone generator and temperature and humidity regulator built into the testing machine body 1 begin operation. Ozone is supplied to the interior of the testing machine body 1 through two connecting pipes 11, and the internal temperature and humidity are regulated to simulate the complex environmental conditions of tire use. Once the environmental parameters reach the set parameters and stabilize... After setting, static testing is performed on the new energy vehicle tires. The machine is stopped for a set time for inspection, checking crack depth and rubber hardening and rebound, and static balance is also tested. Then, dynamic testing is performed on the tires. The servo motor 14 is started to rotate the mounting frame 15, causing the tire fixed on the mounting frame 15 to spin freely. Tire spinning allows for the detection of standard data under a set environment and dynamic balance testing. After the tire has spun freely for the set time, the first electric slide 12 drives the storage box 13 and the tire to slide down. The tire can then pass through the trough to the top of the sand and gravel trough 18, pressing against the sand. Friction is conducted within the gravel pile in the trough 18 to simulate the friction and impact of gravel roads on the tires during actual driving. It's important to note that the gravel needs to be backfilled. The storage tank 13 intermittently moves the tire up and down; backfilling occurs when the tire slides upwards, and testing is performed when the tire slides downwards. A robotic arm can be added to the testing unit 1 to ensure a complete simulation of gravel road conditions, making the testing environment closer to the actual tire usage scenario. This solves the problem of traditional tests failing to reproduce the effects of real road conditions and replaces the traditional conventional tire spinning test method. It can simulate the wear and tear of tires under real road conditions, ensuring the accuracy of tire lifespan testing. When using the gravel filling trough 18 to simulate gravel road conditions, the gravel trough 18 can not only hold large particles of gravel, but also small particles of gravel for simulation. Furthermore, other media can be added to the gravel trough 18 for simulation, such as adding angular gravel or glass fragments, to simulate the wear and puncture damage to the tire under different road conditions. This meets the needs of different testing scenarios, allowing tire life testing to cover more complex road conditions that may be encountered in actual use, improving the reference value of the test results, and making the measured tire life data more consistent with the performance under real use conditions.When testing the lifespan of new energy vehicle tires, different granular media can be placed in the gravel trough 18 to simulate dry road conditions, while soft media can be placed in the mud trough 2 to simulate wet road conditions. For example, soft mud can be placed in the mud trough 2. Regardless of the medium, it is placed in the arc-shaped groove. The storage box 13 drives the tire to rotate and test by adhering to the medium in the arc-shaped groove, which reduces the random splashing of the medium. When simulating different road conditions, it is only necessary to slide the second electric slide 16 to switch the position of the gravel trough 18 and the mud trough 2, so that the corresponding medium area is aligned with the through groove. There is no need to repeatedly disassemble and replace the medium, which ensures the switching efficiency of the test. It can quickly switch between two test scenarios, dry gravel road conditions and wet muddy road conditions, in the same device, which enriches the coverage of the test. When the tire is being tested for life within the testing unit 1, a water source is connected to the second water pipe 35. The output end of the electric cylinder 3 drives the arc plate 31 to fit close to the tire. The water pump 33 draws water through the second water pipe 35 and sends it to the spray head 32 via the first water pipe 34, spraying the water onto the tire at an angle. This simulates the wear and tear of the tire on wet, sandy, or muddy roads in rainy conditions, closely mimicking real rainy driving scenarios. This allows the test to cover more climatic conditions, ensuring the comprehensiveness of the test results and reducing the possibility of deviations in the final measured lifespan data due to a lack of testing in wading and rain conditions. It also allows for dynamic balancing. At the same time, after the tire test is completed or when impurities such as mud affect the gravel road test, the spray head 32 can be used to spray the tire surface at an angle to wash away the impurities, reducing their adhesion to the tire surface and ensuring the accuracy of the tire test. When water is sprayed onto the tires, the water flows through the two lower water channels into the storage tank 41 at the bottom of the test body 1 for temporary storage. The water passing through the lower water channels is filtered by the filter screen 4, removing impurities such as mud, sand, and gravel, allowing only water to flow into the storage tank 41. This reduces the accumulation of large particles in the storage tank 41, saving storage space and facilitating subsequent unified treatment of wastewater. When different media are placed in the arc-shaped grooves of the sand and gravel tank 18 and the soil tank 2, the tires rub against the media. Even with controlled rotation speed, some media can still splash. The four intercepting blocks 5 are pressed upwards by the four elastic elements 51 to intercept the splashes. On both sides of the arc-shaped groove, the groove can better fit the tire simulation. The splashed medium is blocked by the interception block 5, but it can still rub against the side of the tire, ensuring the accuracy of the tire life test. When the splashed medium is backfilled, the storage box 13 slides up to drive the transmission component to reset. The transmission component pulls the two upper scrapers 6 closer to each other. The two lower push plates 61, together with the central scraper 62, scrape the surface of the sand and gravel trough 18 and the filter screen 4. This not only pushes the splashed medium back into the arc-shaped groove, ensuring the medium rubs against the tire, but also ensures the filtration effect of the filter screen 4. When sliding, the transmission components can control the two upper scrapers 6 to move away, and the lower push plate 61 and scraper 62 to move away as well, ensuring the normal operation of the tire test; when the upper scraper 6 drives the lower push plate 61 to slide, it can squeeze the inclined surface of the intercepting block 5, pressing the intercepting block 5 into the interior of the sliding plate 17, and the first elastic element 51 contracts and is subjected to force, so as to facilitate the backfilling of the medium; when backfilling the splashed medium, the storage box 13 slides up to release the pressure on the extrusion rod 73, and the third elastic element 74 elastically resets and pushes the extrusion rod 73. At this time, the compressed cylinder 7 also resets, and the two second elastic elements in the bidirectional air cylinder 71 pull on the two output ends, so that the continuous The two upper scrapers 6 approach each other, and the lower pusher 61 and scraper 62 push the splashed medium into the arc-shaped groove. When the storage box 13 slides down again, the storage box 13 can press down the extrusion rod 73. The extrusion rod 73 compresses the third elastic element 74 and compresses it. At the same time, it compresses the cylinder 7 so that the gas inside it is sent to the internal center of the bidirectional air cylinder 71 through the connecting pipe 72. This pushes the two output ends of the bidirectional air cylinder 71 to extend, overcome the tension of the second elastic element, and push the two upper scrapers 6 apart, away from the arc-shaped groove area, reducing the obstruction to the tire rotation test. This completes the automatic backfilling of the medium in conjunction with the up and down test of the tire. When the water sprayed from nozzle 32 falls into storage tank 41 for temporary storage, the water source originally connected to water pipe 35 is connected to inlet pipe 81. The solenoid three-way valve 8 controls the connection between inlet pipe 81 and return pipe 82 and water pipe 35. When a large amount of water accumulates in storage tank 41, the solenoid three-way valve 8 connects return pipe 82 to water pipe 35. Water pump 33 then draws water from storage tank 41 through return pipe 82 for cyclic spraying, achieving water resource recycling and reducing water waste during testing. When water needs to be replaced, the solenoid three-way valve 8 switches the connection state, connecting inlet pipe 81 to water pipe 35 to draw fresh external water. When the filtered wastewater is recycled, the mud and sand impurities have been filtered out, reducing the possibility of clogging the spray nozzles 32 and ensuring that the spray test can be carried out stably. When the water in the storage tank 41 is pumped out for circulation, the filter box 9 is fixed at one end of the return pipe 82 at the bottom of the storage tank 41. The water inlet plates on both sides of the filter box 9 can filter the wastewater again, reducing the possibility of impurities being pumped out by the water pump 33 and causing blockage. The top flow pipe 91 is fixed at the top of the filter box 9. The water in the storage tank 41 is divided into upper and lower layers. The lower layer is mostly accumulated impurities mixed with wastewater, while the upper layer of the storage tank 41 has fewer impurities. The top flow pipe 91 is used to pump out the water from the upper layer of the storage tank 41 to ensure the amount of circulating water. When the curved plate 31 sprays water near the tire, the rubber scraper 92 can deform and conform to the surface of the tire. In conjunction with multiple friction bumps 93, it rubs against the surface of the tire, scraping off the impurities attached to the rubber scraper 92. This reduces the long-term adhesion of impurities to the tire surface, which could affect subsequent dynamic testing and dynamic balancing to determine the true wear of the tire. At the same time, the flexible water-draining strips 94, when the curved plate 31 is close to the tire, can work together with the curved plate 31 to block the gap between the tire side and the through groove, reducing the splashing of water and media from the gap during the rotation of the tire during the water spray test, and keeping the test environment clean.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the service life of automotive parts, characterized in that: The device includes a testing body; the testing body has an ozone generator and a temperature and humidity regulator built in; two connecting pipes are fixedly connected inside the testing body, and the two connecting pipes are respectively connected to the ozone generator and the temperature and humidity regulator; a first electric slide is slidably connected inside the testing body; a storage box is fixedly connected to the first electric slide; a servo motor is fixedly connected inside the storage box; a fixed frame is fixedly connected to the output end of the servo motor; a through groove is opened inside the testing body and below the fixed frame; a second electric slide is slidably connected inside the testing body and below the through groove; a sliding plate is fixedly connected to the second electric slide; a sand and gravel groove is opened on the sliding plate, and the shape of the sand and gravel groove corresponds to the shape of the through groove.

2. The automotive parts service life testing device according to claim 1, characterized in that: A soil groove is formed on the upper surface of the sliding plate at the end away from the sand and gravel trough, and the shape of the soil groove corresponds to the shape of the through groove; an arc-shaped groove is formed at the center of both the soil groove and the sand and gravel trough.

3. The automotive parts service life testing device according to claim 1, characterized in that: An electric cylinder is fixedly connected to one side of the test body near the fixed frame; an arc-shaped plate is fixedly connected to the output end of the electric cylinder; a spray head is fixedly connected to the inner side of the arc-shaped plate; a water pump is fixedly connected to the inside of the test body near the top of the arc-shaped plate; a No. 1 water pipe is fixedly connected between the output end of the water pump and the spray head; a No. 2 water pipe is fixedly connected to the input end of the water pump.

4. The automotive parts service life testing device according to claim 2, characterized in that: Two drainage channels are provided on both the sand and gravel trough and the soil trough; filter screens are fixedly connected to the drainage channels of both the sand and gravel trough and the soil trough; a storage tank is provided inside the test body below the through channel.

5. The automotive parts service life testing device according to claim 4, characterized in that: The inner wall of the sliding plate is slidably connected with multiple intercepting blocks, and two intercepting blocks are installed in a group on both sides of the filter plate near the arc-shaped groove; the bottom end of the intercepting block is fixedly connected to an elastic element.

6. The automotive parts service life testing device according to claim 5, characterized in that: Multiple upper scrapers are slidably connected to the sliding plate, and two opposing upper scrapers are set as a group; two lower push plates are fixedly connected to the bottom of the upper scraper; a scraper is fixedly connected to the bottom center of the upper scraper, and the scraper is located between the two lower push plates, and the scraper can scrape against the upper surface of the filter screen; a transmission component is provided inside the sliding plate, which is used to drive the two upper scrapers to slide.

7. The automotive parts service life testing device according to claim 6, characterized in that: The transmission assembly includes a cylinder, a bidirectional air cylinder, a connecting pipe, a pressing rod, and a third elastic element; two cylinders are fixedly connected to a sliding plate; two bidirectional air cylinders are fixedly connected inside the sliding plate, with two upper scrapers fixedly connected to their two output ends, and two second elastic elements are built into the bidirectional air cylinders; the connecting pipe is fixedly connected between the cylinders and the bidirectional air cylinders; the pressing rod is slidably connected inside the testing machine body, and the pressing rod is located below the storage box, and the pressing rod can press corresponding to the output end of the cylinder; the third elastic element is fixedly connected between the pressing rod and the testing machine body.

8. The automotive parts service life testing device according to claim 3, characterized in that: An electromagnetic three-way valve is fixedly connected to the end of the No. 2 water pipe away from the water pump; an inlet pipe is fixedly connected to the end of the electromagnetic three-way valve away from the No. 2 water pipe; and a return pipe is fixedly connected to the bottom end of the electromagnetic three-way valve.

9. The automotive parts service life testing device according to claim 8, characterized in that: A filter box is fixedly connected to the end of the return pipe away from the electromagnetic three-way valve. The filter box is located in the storage tank, and inlet plates are fixedly connected to both sides of the filter box. A top flow pipe is fixedly connected to the top of the filter box.

10. The automotive parts service life testing device according to claim 3, characterized in that: A rubber scraper is fixed to the top of the arc-shaped plate; multiple friction protrusions are fixed to the rubber scraper, and the friction protrusions are located at the end of the rubber scraper away from the arc-shaped plate; multiple drain strips are fixed to the bottom of the arc-shaped plate, and the drain strips are made of flexible material.

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