A sealing structure for a steering bearing of an automobile shock absorber

Abstract

The invention discloses a sealing structure of a steering bearing of an automobile shock absorber, which belongs to the technical field of steering bearings, and comprises an upper ring and a lower ring, wherein the upper ring is arranged above the lower ring; an annular plate, wherein the annular plate is fixedly connected to the upper surface of the lower ring, and the upper end of the annular plate extends to the inside of the upper ring; balls, wherein the balls are rollingly installed between the annular plate and the upper ring, wherein the balls are arranged at the upper end of the annular plate, wherein the balls are arranged in multiple groups, and the multiple groups of balls are distributed in an annular shape; and a sealing component, wherein the sealing component is arranged between the outer wall of the annular plate and the inner wall of the upper ring. The invention realizes the primary sealing of the steering bearing by a rubber ring, realizes the secondary sealing of the steering bearing by a magnetic fluid, realizes the multi-stage sealing of the steering bearing, can effectively prevent muddy water, dust, etc. from entering the inside of the steering bearing, and avoids the problem of external impurities contaminating the lubricating oil inside the steering bearing.

Description

Technical Field

[0001] The invention relates to the technical field of steering bearings, and more particularly to a sealing structure of a steering bearing of an automobile shock absorber. Background Art

[0002] Steering bearings, also known as pressure bearings and plane bearings, are important components in the steering system of automobiles. Steering bearings are mainly responsible for keeping the shock absorber rotating with the wheel when the vehicle is turning, ensuring the flexibility of steering. The outer ring of the steering bearing is usually made of rubber, which can maintain a soft connection between the vehicle body and the shock absorber, reduce vibration on uneven roads, and thus improve riding comfort.

[0003] However, in the actual driving process, vehicles will inevitably encounter various complex road conditions, especially when driving through mud pits, the splash of muddy water can easily splash onto the surface of the steering bearing, and the muddy water penetrates into the interior through the gaps of the bearing. These muddy water contain impurities, such as sand and soil. Once they enter the bearing, they will mix with the lubricant in the bearing during the rolling process of the ball, seriously polluting the originally clean lubricant. The contamination of the lubricant will not only reduce its lubrication effect, causing increased friction between bearing components, but also accelerate the wear of the bearing. This is because the impurities in the muddy water are like micro-abrasives, which constantly cause wear inside the bearing, destroying the original precision and balance of the bearing. As the wear intensifies, the steering bearing begins to make abnormal noises when working, accompanied by a sense of frustration, which seriously affects the driving smoothness and the mood of the driver.

[0004] What is more serious is that long-term erosion and wear from mud and water may cause premature failure of the steering bearing and even cause steering system failure. Once there is a problem with the steering system, the vehicle's handling will be greatly reduced, and the driver may not be able to accurately control the direction of the vehicle, which may have extremely serious consequences in an emergency and threaten the lives of the driver and passengers.

[0005] In view of this, in view of the above-mentioned deficiencies, the present invention improves and optimizes the steering bearing in the prior art and develops a sealing structure for a steering bearing of an automobile shock absorber. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a sealing structure for a steering bearing of an automobile shock absorber, which realizes the primary sealing of the steering bearing through a rubber ring, and realizes the secondary sealing of the steering bearing through a magnetic fluid, thereby realizing multi-stage sealing of the steering bearing, which can effectively prevent external mud, water, dust, etc. from entering the interior of the steering bearing, avoids the problem of external impurities contaminating the internal lubricating oil of the steering bearing, and ensures the service life of the steering bearing.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A sealing structure of a steering bearing of an automobile shock absorber comprises an upper ring and a lower ring, wherein the upper ring is arranged above the lower ring;

[0009] An annular plate, the annular plate is fixedly connected to the upper surface of the lower ring, and the upper end of the annular plate extends to the interior of the upper ring;

[0010] Balls, the balls are rollingly installed between the annular plate and the upper ring, the balls are arranged at the upper end of the annular plate, the balls are arranged in multiple groups, and the multiple groups of balls are distributed in an annular shape;

[0011] A sealing assembly, the sealing assembly is arranged between the outer wall of the annular plate and the inner wall of the upper ring, a rubber ring is installed on the outer and inner walls of the annular plate, the end of the rubber ring close to the annular plate is thicker than the end away from the annular plate, and the thin end of the rubber ring is bent and pressed against the inner wall of the upper ring;

[0012] A processing component is arranged on the outside of the upper ring, and the processing component is used to detect the state of the lubricating oil inside the bearing. A processing box is arranged on the outside of the upper ring, and a micro pump is installed in the processing box. The micro pump is used to extract the lubricating oil in the gap between the upper ring and the lower ring. A controller and a metal chip particle sensor are installed in the processing box, and the metal chip particle sensor is used to detect the amount of metal chips in the lubricating oil. The controller and the metal chip particle sensor are electrically connected, and the controller is used to process the numerical signal detected by the metal chip particle sensor. When processing the numerical signal, the controller sets a threshold signal. If the numerical signal detected by the metal chip particle sensor is higher than the threshold, the controller determines that the steering bearing is seriously worn and issues an alarm.

[0013] Furthermore, the processing component also includes:

[0014] A liquid inlet pipe, the liquid inlet pipe is connected to the side surface of the upper ring, the liquid inlet pipe is communicated with the interior of the upper ring, and one end of the liquid inlet pipe away from the upper ring is connected to the liquid inlet of the micro pump;

[0015] A first sealing plate, wherein the first sealing plate is arranged on one side of the micro pump;

[0016] A connecting pipe, the connecting pipe is installed on the discharge port of the micro pump, and one end of the connecting pipe away from the micro pump is connected to the first sealing plate;

[0017] a second sealing plate, the second sealing plate being arranged on a side of the first sealing plate away from the micro pump, the first sealing plate and the second sealing plate being fixedly connected to the inner wall of the processing box;

[0018] A filter screen, wherein the filter screen is arranged between the first sealing plate and the second sealing plate;

[0019] A drain pipe, the drain pipe is connected to the side surface of the processing box, one end of the drain pipe away from the processing box is connected to the upper ring, and the drain pipe is communicated with the interior of the upper ring, the drain pipe extends into the processing box and is connected to the second sealing plate, and the detection end of the metal chip particle sensor is close to the outer wall of the drain pipe;

[0020] When processing the numerical signal, the controller calculates the lubricity percentage of the lubricating oil according to the difference between the current numerical signal detected by the metal chip particle sensor and the threshold value.

[0021] Furthermore, the processing component also includes:

[0022] The controller records the numerical signal detected by the metal chip particle sensor in real time, and compares the numerical signal at the previous moment with the numerical signal at the current moment. If the numerical signal at the current moment is smaller than the numerical signal at the previous moment, it is determined that the steering bearing is leaking oil; if the numerical signal at the current moment is larger than the numerical signal at the previous moment, it is determined that the steering bearing is not leaking oil.

[0023] Furthermore, an elastic plate is closely arranged on a side of the filter screen away from the first sealing plate, and one end of the elastic plate is fixedly connected to the inner wall of the processing box;

[0024] A flexible membrane is connected to the peripheral edge of the filter screen and is fixedly connected to the inner wall of the processing box.

[0025] Furthermore, the inner bottom of the processing box is located between the first sealing plate and the filter screen and is made of permanent magnetic material.

[0026] Furthermore, the sealing assembly also includes:

[0027] A first sealing ring, wherein the first sealing ring is provided in two groups, and the two groups of the first sealing rings are respectively installed on the outer circular wall and the inner circular wall of the annular plate, and the first sealing ring is connected to the side surface of the annular plate near the lower end;

[0028] The second sealing ring is arranged above the first sealing ring, and the number of the second sealing rings corresponds to that of the first sealing rings. The second sealing ring is fixedly connected to the side surface of the annular plate, and the rubber ring is installed between the first sealing ring and the second sealing ring.

[0029] Furthermore, the sealing assembly also includes:

[0030] The annular metal sheet is installed inside the rubber ring and is made of elastic material.

[0031] Furthermore, the sealing assembly also includes:

[0032] An inner annular permanent magnet, wherein the inner annular permanent magnet is fixedly connected to the outer circumferential surface of the annular plate near the upper end, and an annular groove is formed on the outer circumferential surface of the inner annular permanent magnet;

[0033] An outer annular permanent magnet, the outer annular permanent magnet is inserted into the annular groove on the inner annular permanent magnet, and the outer annular permanent magnet is fixedly connected to the inner wall of the upper ring;

[0034] The magnetic fluid is filled in the gap between the outer annular permanent magnet and the inner annular permanent magnet.

[0035] Furthermore, the sealing assembly also includes:

[0036] A connecting block, the connecting block is fixedly connected to the outer circumferential surface of the upper ring near the lower end, and the connecting blocks are evenly distributed in multiple groups;

[0037] A water retaining ring is connected to an end of the connecting block away from the upper ring, and is used to cover the gap between the upper ring and the lower ring.

[0038] Furthermore, the bristle group is arranged below the rubber ring, the bristle group is arranged in multiple groups, and the multiple groups of bristle groups are distributed in a ring shape.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] (1) In this scheme, the rubber ring realizes the primary sealing of the steering bearing, and the magnetic fluid realizes the secondary sealing of the steering bearing, thus realizing the multi-level sealing of the steering bearing. This can effectively prevent external mud, water, dust, etc. from entering the interior of the steering bearing, avoid the problem of external impurities contaminating the internal lubricating oil of the steering bearing, and ensure the service life of the steering bearing.

[0041] (2) By setting up a metal chip particle sensor and combining it with some control methods, we can know in real time the purity of the lubricating oil in the steering bearing and whether the lubricating oil in the steering bearing is leaking, so that the driver can understand the status of the steering bearing in real time and provide the driver with sufficient time to take countermeasures, such as replenishing lubricating oil or performing necessary repairs, thereby avoiding sudden failures during driving and reducing the risk of downtime and accidents caused by failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 This is an appearance view of the overall structure of the present invention;

[0044] Figure 2 is a cross-sectional view of the upper ring and the lower ring of the present invention;

[0045] Figure 3 For the present invention Figure 2 Magnified view at A in the middle;

[0046] Figure 4 It is a schematic diagram of the structure inside the processing box of the present invention;

[0047] Figure 5 It is a schematic structural diagram of the lower ring of the present invention.

[0048] Description of the numbers in the figure:

[0049] 1. Upper ring; 2. Lower ring; 3. Ball; 4. Ring plate; 5. First sealing ring; 6. Second sealing ring; 7. Rubber ring; 8. Ring metal sheet; 9. Inner ring permanent magnet; 10. Outer ring permanent magnet; 11. Magnetic fluid; 12. Brush set; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Processing box; 16. Micro pump; 17. Connecting pipe; 18. First sealing plate; 19. Filter screen; 20. Second sealing plate; 21. Flexible membrane; 22. Elastic plate; 23. Metal chip particle sensor; 24. Controller; 25. Connecting block; 26. Water retaining ring. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0051] See also Figures 1 to 5 , a sealing structure of a steering bearing of a shock absorber of an automobile, comprising an upper ring 1 and a lower ring 2, wherein the upper ring 1 is arranged above the lower ring 2; an annular plate 4, wherein the annular plate 4 is fixedly connected to the upper surface of the lower ring 2, and the upper end of the annular plate 4 extends to the inside of the upper ring 1; balls 3, wherein the balls 3 are rollingly installed between the annular plate 4 and the upper ring 1, and the balls 3 are arranged at the upper end of the annular plate 4, and the balls 3 are arranged in multiple groups, and the multiple groups of balls 3 are distributed in an annular shape;

[0052] A sealing assembly is arranged between the outer wall of the annular plate 4 and the inner wall of the upper ring 1. A rubber ring 7 is installed on the outer and inner walls of the annular plate 4. The end of the rubber ring 7 close to the annular plate 4 is thicker than the end away from the annular plate 4. The thin end of the rubber ring 7 is bent and pressed against the inner wall of the upper ring 1.

[0053] A processing component is arranged outside the upper ring 1, and is used to detect the state of the lubricating oil inside the bearing. A processing box 15 is arranged outside the upper ring 1, and a micro pump 16 is installed in the processing box 15. The micro pump 16 is used to extract the lubricating oil in the gap between the upper ring 1 and the lower ring 2. A controller 24 and a metal chip particle sensor 23 are installed in the processing box 15. The metal chip particle sensor 23 is used to detect the amount of metal chips in the lubricating oil. The controller 24 is electrically connected to the metal chip particle sensor 23. The controller 24 is used to process the numerical signal detected by the metal chip particle sensor 23. When processing the numerical signal, the controller 24 sets a threshold signal. If the numerical signal detected by the metal chip particle sensor 23 is higher than the threshold, the controller 24 determines that the steering bearing is seriously worn and issues an alarm.

[0054] The processing assembly also includes a liquid inlet pipe 13, which is connected to the side surface of the upper ring 1, the liquid inlet pipe 13 is communicated with the interior of the upper ring 1, and the end of the liquid inlet pipe 13 away from the upper ring 1 is connected to the liquid inlet of the micro pump 16; a first sealing plate 18, the first sealing plate 18 is arranged on one side of the micro pump 16; a connecting pipe 17, the connecting pipe 17 is installed on the discharge port of the micro pump 16, and the end of the connecting pipe 17 away from the micro pump 16 is connected to the first sealing plate 18; a second sealing plate 20, the second sealing plate 20 is arranged on the first sealing plate 18 away from the micro pump 1 6, the first sealing plate 18 and the second sealing plate 20 are fixedly connected to the inner wall of the processing box 15; the filter screen 19, the filter screen 19 is arranged between the first sealing plate 18 and the second sealing plate 20; the drain pipe 14, the drain pipe 14 is connected to the side surface of the processing box 15, the end of the drain pipe 14 away from the processing box 15 is connected to the upper ring 1, and the drain pipe 14 is connected to the interior of the upper ring 1, the drain pipe 14 extends into the processing box 15 and is connected to the second sealing plate 20, and the detection end of the metal chip particle sensor 23 is close to the outer wall of the drain pipe 14.

[0055] When in use, the lower ring 2 is installed above the shock absorber, and the upper ring 1 is installed on the vehicle. When the wheel of the vehicle is controlled to turn, the lower ring 2 will rotate. During the rotation, the thinner end of the rubber ring 7 is always pressed against the inner wall of the upper ring 1. In this way, even when the lower ring 2 rotates, the gap between the upper ring 1 and the lower ring 2 is also sealed. Even if the vehicle passes through a puddle or a dusty place, the rubber ring 7 can effectively prevent foreign matter from entering the gap between the upper ring 1 and the lower ring 2, thereby avoiding the problem that foreign matter enters the gap to increase the friction of the ball 3 and cause serious wear of the steering bearing. The micro pump 16, the controller 24 and the metal chip particle sensor 23 are powered by the outside world. The power supply can be a power supply battery in the vehicle. When the vehicle is turned on, the micro pump 16 will also be turned on. When the micro pump 16 is turned on, the lubricating oil in the steering bearing will be extracted through the liquid inlet pipe 13, and then the lubricating oil will be discharged through the connecting pipe 17. The discharged lubricating oil will be filtered through the filter screen 19, and the filtered lubricating oil will enter the drain pipe 14, and then input into the interior of the steering bearing through the drain pipe 14, so as to filter the lubricating oil, effectively remove impurities in the lubricating oil, and reduce the wear of the steering bearing during operation. Some extremely fine impurities will pass through the filter screen 19. The mesh of the filter screen 19, when these tiny impurities pass through the drain pipe 14 with the lubricating oil, the metal chip particle sensor 23 detects the content of metal particles in the lubricating oil in the drain pipe 14 in real time, and the numerical signal detected by the metal chip particle sensor 23 is transmitted to the controller 24 in real time. The controller 24 processes these numerical signals and pre-sets the threshold of the numerical signal. The numerical signal detected by the metal chip particle sensor 23 is compared with the threshold signal in real time. If the detected numerical signal is lower than the threshold, it indicates that the internal wear of the steering bearing is not serious. If the detected numerical signal is higher than the threshold, the alarm mode is triggered, indicating that the steering bearing is If the steering bearing is seriously worn, it is necessary to replace the steering bearing in time, otherwise it will affect the steering work of the vehicle. The controller 24 can be connected to the controller inside the vehicle. The controller inside the vehicle transmits the alarm signal of the controller 24 to the electronic screen of the vehicle's central control platform, so that the driver can be reminded in time to replace the steering bearing. When replacing, it is only necessary to remove the bearing body from the liquid inlet pipe 13 and the liquid discharge pipe 14, that is, remove the upper ring 1 and the lower ring 2, and then open the processing box 15 to clean the impurities inside. After cleaning, restore the processing box 15, and connect the liquid inlet pipe 13 and the liquid discharge pipe 14 to the new steering bearing body.

[0056] In some embodiments, when processing the numerical signal, the controller 24 calculates the lubricity percentage of the lubricating oil according to the difference between the current numerical signal detected by the metal chip particle sensor 23 and a threshold value.

[0057] The lubricity percentage of lubricating oil is calculated by the function, and the specific function is:

[0058] ,in Expressed as a percentage of lubricity of the lubricant; It is represented by the current metal particle content value, that is, the current numerical signal detected by the metal chip particle sensor 23, It is represented by the preset metal particle content threshold, that is, the preset threshold signal; ɑ is represented by the exponential factor for controlling the rate of lubricity decrease. ɑ is a positive number used to adjust the speed of lubricity decrease. When ɑ increases, the lubricity decreases faster when approaching the threshold; It is expressed as a slope factor that affects the steepness of the curve near the threshold; It is expressed as a parameter for adjusting the shape of the curve. By knowing the percentage of lubricating oil inside the steering bearing in real time, the driver can understand the status of the steering bearing in real time, providing the driver with enough time to take countermeasures, such as replenishing lubricating oil or performing necessary repairs, thereby avoiding sudden failures during driving and reducing the risk of downtime and accidents caused by failures.

[0059] In some embodiments, the processing component also includes a controller 24 that records the numerical signal detected by the metal chip particle sensor 23 in real time. The controller 24 compares the numerical signal at the previous moment with the numerical signal at the current moment. If the numerical signal at the current moment is smaller than the numerical signal at the previous moment, it is determined that the steering bearing is leaking oil; if the numerical signal at the current moment is larger than the numerical signal at the previous moment, it is determined that the steering bearing is not leaking oil.

[0060] Theoretically, when the steering bearing is working, wear will continue to occur inside, and the metal debris in the lubricating oil will continue to increase. When the metal chip particle sensor 23 detects the metal particle content in the lubricating oil in real time, the detected value increases with time. When the detected value decreases, it means that the steering bearing is leaking oil, causing the value detected by the metal chip particle sensor 23 to become smaller. Then the controller 24 records the numerical signal detected by the metal chip particle sensor 23 in real time. The controller 24 compares the numerical signal at the previous moment with the numerical signal at the current moment. If the numerical signal at the current moment is less than the numerical signal at the previous moment, it is determined that the steering bearing is leaking oil; if the numerical signal at the current moment is greater than the numerical signal at the previous moment, it is determined that the steering bearing is not leaking oil.

[0061] However, in actual situations, at the initial stage of leakage, only a small amount of lubricating oil may leak, and the content of metal chips has not decreased significantly. However, the content of metal chips caused by wear inside the bearing is greater than the content of metal chips caused by the leakage of lubricating oil, which will still cause the numerical signal detected by the metal chip particle sensor 23 to become larger. As time goes by, the numerical signal at the current moment will eventually be smaller than the numerical signal at the previous moment. Although the bearing oil leakage detection is not so sensitive, it will not cause serious oil shortage in the shaft bearing and cause serious wear problems. An implementation method for detecting steering bearing oil leakage is provided. The present invention can send the signal of steering bearing oil leakage directly to the electronic screen of the vehicle's center console, so that the driver can know the status of the steering bearing in time.

[0062] In some embodiments, an elastic plate 22 is tightly arranged on a side of the filter screen 19 away from the first sealing plate 18, and one end of the elastic plate 22 is fixedly connected to the inner wall of the processing box 15; a flexible membrane 21 is connected to the circumferential edge of the filter screen 19, and the flexible membrane 21 is fixedly connected to the inner wall of the processing box 15, and the inner bottom of the processing box 15 is located between the first sealing plate 18 and the filter screen 19 and is made of permanent magnetic material.

[0063] When the lubricating oil passes through the filter 19, impurities remain on the filter 19, and the flowing lubricating oil will impact the elastic plate 22, causing the elastic plate 22 to bend and deform. When the lubricating oil stops flowing, the bent elastic plate 22 will restore its deformation and hit the filter 19, achieving a knocking action on the filter 19, and the filter 19 vibrates, which facilitates the impurities on the filter 19 to fall off. The installed flexible membrane 21 can increase the vibration effect of the filter 19, thereby increasing the effect of impurity removal. The fallen impurities fall to the bottom of the processing box 15, and the magnetic material at the bottom of the processing box 15 will magnetically attract iron filings and impurities, thereby collecting and fixing the impurities and slowing down the clogging of the filter 19.

[0064] In some embodiments, the sealing assembly further comprises:

[0065] The first sealing ring 5 is provided in two groups, and the two groups of first sealing rings 5 ​​are respectively installed on the outer circular wall and the inner circular wall of the annular plate 4, and the first sealing ring 5 is connected to the side surface of the annular plate 4 near the lower end; the second sealing ring 6 is provided above the first sealing ring 5, and the number of the second sealing rings 6 corresponds to the number of the first sealing rings 5, and the second sealing rings 6 are fixedly connected to the side surface of the annular plate 4, and the rubber ring 7 is installed between the first sealing ring 5 and the second sealing ring 6; the annular metal sheet 8 is installed inside the rubber ring 7, and the annular metal sheet 8 is made of elastic material.

[0066] By adopting the above technical solution, the installed first sealing ring 5 and the second sealing ring 6 provide an installation position for the rubber ring 7, and the annular metal sheet 8 is installed in the rubber ring 7 to form a composite supporting structure, which can provide better rigidity and stability when bearing loads. The combined structure of the rubber ring 7 and the annular metal sheet 8 can adapt to different working environments, including temperature, humidity, corrosion, etc., thereby improving the durability and reliability of the bearing.

[0067] In some embodiments, the sealing assembly also includes an inner annular permanent magnet 9, which is fixedly connected to the outer circumferential surface of the annular plate 4 near the upper end, and an annular groove is opened on the outer circumferential surface of the inner annular permanent magnet 9; an outer annular permanent magnet 10, which is inserted into the annular groove on the inner annular permanent magnet 9, and the outer annular permanent magnet 10 is fixedly connected to the inner wall of the upper ring 1; and a magnetic fluid 11, which fills the gap between the outer annular permanent magnet 10 and the inner annular permanent magnet 9.

[0068] The inner annular permanent magnet 9 and the outer annular permanent magnet 10 of the present invention can realize magnetic fixation of the magnetic fluid 11 in the gap, avoiding the problem of the magnetic fluid 11 flowing everywhere. By setting the magnetic fluid 11, the steering work of the steering bearing can be guaranteed, and foreign matter can be prevented from entering the interior of the steering bearing. The secondary sealing of the steering bearing is realized by the magnetic fluid 11. The present invention realizes the primary sealing of the steering bearing through the rubber ring 7. When the rubber ring 7 is damaged, that is, when the primary sealing fails, the present invention also has a secondary sealing, which greatly improves the sealing effect of the steering bearing, and the magnetic fluid 11 seal will not have the problem of wear like the rubber ring 7.

[0069] In some embodiments, the sealing assembly also includes a connecting block 25, which is fixedly connected to the outer cylindrical surface of the upper ring 1 near the lower end, and the connecting block 25 is evenly distributed in multiple groups; a water retaining ring 26, which is connected to one end of the connecting block 25 away from the upper ring 1, and the water retaining ring 26 is used to cover the gap between the upper ring 1 and the lower ring 2.

[0070] The water retaining ring 26 is used to cover the gap between the upper ring 1 and the lower ring 2, which can reduce the entry of foreign matter, such as muddy water and dust, into the gap between the upper ring 1 and the lower ring 2 to a certain extent, thereby alleviating the dust collection effect of the steering bearing.

[0071] In some embodiments, the bristle group 12 is disposed below the rubber ring 7 , the bristle group 12 is disposed in multiple groups, and the multiple groups of bristle groups 12 are distributed in a ring shape.

[0072] When the muddy water and dust reach the rubber ring 7, part of them stick to the surface of the rubber ring 7, and part of them remain at the connection between the rubber ring 7 and the upper ring 1. When the lower ring 2 rotates, the muddy water and dust will increase the wear of the rubber ring 7. In the present invention, when the lower ring 2 rotates, the brush group 12 will clean the lower surface of the rubber ring 7, remove the muddy water and dust in time, avoid the problem of accelerated wear of the rubber ring 7, and ensure the service life of the steering bearing.

[0073] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealing structure for a steering bearing of an automobile shock absorber, characterized in that: include: An upper ring (1) and a lower ring (2), wherein the upper ring (1) is arranged above the lower ring (2); an annular plate (4), the annular plate (4) being fixedly connected to the upper surface of the lower ring (2), and the upper end of the annular plate (4) extending to the interior of the upper ring (1); Balls (3), the balls (3) are rollingly mounted between the annular plate (4) and the upper ring (1), the balls (3) are arranged at the upper end of the annular plate (4), the balls (3) are arranged in a plurality of groups, and the plurality of groups of balls (3) are distributed in an annular shape; A sealing component, the sealing component being arranged between the outer wall of the annular plate (4) and the inner wall of the upper ring (1), a rubber ring (7) being installed on both the outer wall and the inner wall of the annular plate (4), the end of the rubber ring (7) close to the annular plate (4) being thicker than the end away from the annular plate (4), the thin end of the rubber ring (7) being bent and pressed against the inner wall of the upper ring (1); a processing component, the processing component being arranged outside the upper ring (1), the processing component being used to detect the state of lubricating oil inside the bearing, the upper ring (1) being provided with a processing box (15), the processing box (15) being provided with a micro pump (16), the micro pump (16) being used to extract lubricating oil from a gap between the upper ring (1) and the lower ring (2), the processing box (15) being provided with a controller (24) and a metal chip particle sensor (23), the metal chip particle sensor (23) being used to detect the amount of metal chips in the lubricating oil, the controller (24) being electrically connected to the metal chip particle sensor (23), the controller (24) being used to process a numerical signal detected by the metal chip particle sensor (23), the controller (24) setting a threshold signal when processing the numerical signal, and if the numerical signal detected by the metal chip particle sensor (23) is higher than the threshold, the controller (24) determines that the steering bearing is seriously worn and issues an alarm; The processing components also include: a liquid inlet pipe (13), the liquid inlet pipe (13) being connected to the side surface of the upper ring (1), the liquid inlet pipe (13) being in communication with the interior of the upper ring (1), and the end of the liquid inlet pipe (13) away from the upper ring (1) being connected to the liquid inlet of the micro pump (16); a first sealing plate (18), the first sealing plate (18) being arranged on one side of the micro pump (16); A connecting pipe (17), the connecting pipe (17) being mounted on the discharge port of the micro pump (16), and one end of the connecting pipe (17) away from the micro pump (16) being connected to the first sealing plate (18); a second sealing plate (20), the second sealing plate (20) being arranged on a side of the first sealing plate (18) away from the micro pump (16), the first sealing plate (18) and the second sealing plate (20) both being fixedly connected to an inner wall of the processing box (15); A filter screen (19), wherein the filter screen (19) is arranged between the first sealing plate (18) and the second sealing plate (20); a liquid discharge pipe (14), the liquid discharge pipe (14) being connected to a side surface of the processing box (15), one end of the liquid discharge pipe (14) away from the processing box (15) being connected to the inside of the upper ring (1), and the liquid discharge pipe (14) being in communication with the interior of the upper ring (1), the liquid discharge pipe (14) extending into the processing box (15) and being connected to the second sealing plate (20), and the detection end of the metal chip particle sensor (23) being close to the outer wall of the liquid discharge pipe (14); When processing the numerical signal, the controller (24) calculates the lubricity percentage of the lubricating oil according to the difference between the current numerical signal detected by the metal chip particle sensor (23) and a threshold value.

2. The sealing structure of a steering bearing of an automobile shock absorber according to claim 1, characterized in that: The processing components also include: The controller (24) records the numerical signal detected by the metal chip particle sensor (23) in real time. The controller (24) compares the numerical signal at the previous moment with the numerical signal at the current moment. If the numerical signal at the current moment is smaller than the numerical signal at the previous moment, it is determined that the steering bearing is leaking oil; if the numerical signal at the current moment is larger than the numerical signal at the previous moment, it is determined that the steering bearing is not leaking oil.

3. The sealing structure of a steering bearing of an automobile shock absorber according to claim 2, characterized in that: include: an elastic plate (22), the elastic plate (22) being closely arranged on a side of the filter screen (19) away from the first sealing plate (18), and one end of the elastic plate (22) being fixedly connected to an inner wall of the processing box (15); A flexible membrane (21), wherein the flexible membrane (21) is connected to the peripheral edge of the filter screen (19), and the flexible membrane (21) is fixedly connected to the inner wall of the processing box (15).

4. The sealing structure of a steering bearing of an automobile shock absorber according to claim 3 is characterized in that: The inner bottom of the processing box (15) is located between the first sealing plate (18) and the filter screen (19) and is made of permanent magnetic material.

5. The sealing structure of a steering bearing of an automobile shock absorber according to claim 4, characterized in that: The sealing assembly also includes: A first sealing ring (5), wherein the first sealing ring (5) is provided in two groups, the two groups of the first sealing ring (5) are respectively mounted on the outer circular wall and the inner circular wall of the annular plate (4), and the first sealing ring (5) is connected to the side surface of the annular plate (4) near the lower end; The second sealing ring (6) is arranged above the first sealing ring (5), and the number of the second sealing rings (6) corresponds to the number of the first sealing rings (5). The second sealing ring (6) is fixedly connected to the side surface of the annular plate (4), and the rubber ring (7) is installed between the first sealing ring (5) and the second sealing ring (6).

6. The sealing structure of a steering bearing of an automobile shock absorber according to claim 5, characterized in that: The sealing assembly also includes: An annular metal sheet (8), wherein the annular metal sheet (8) is installed inside the rubber ring (7), and the annular metal sheet (8) is made of elastic material.

7. The sealing structure of a steering bearing of an automobile shock absorber according to claim 6, characterized in that: The sealing assembly also includes: An inner annular permanent magnet (9), the inner annular permanent magnet (9) being fixedly connected to the outer circumferential surface of the annular plate (4) near the upper end, and an annular groove being provided on the outer circumferential surface of the inner annular permanent magnet (9); An outer annular permanent magnet (10), the outer annular permanent magnet (10) being inserted into an annular groove on the inner annular permanent magnet (9), the outer annular permanent magnet (10) being fixedly connected to the inner wall of the upper ring (1); A magnetic fluid (11), wherein the magnetic fluid (11) is filled in a gap between the outer annular permanent magnet (10) and the inner annular permanent magnet (9).

8. The sealing structure of a steering bearing of an automobile shock absorber according to claim 7, characterized in that: The sealing assembly also includes: A connecting block (25), the connecting block (25) being fixedly connected to the outer circumferential surface of the upper ring (1) at a position close to the lower end, the connecting blocks (25) being evenly distributed in a plurality of groups; A water retaining ring (26) is connected to an end of the connecting block (25) away from the upper ring (1), and the water retaining ring (26) is used to cover the gap between the upper ring (1) and the lower ring (2).

9. The sealing structure of a steering bearing of an automobile shock absorber according to claim 8, characterized in that: include: A bristle group (12), wherein the bristle group (12) is arranged below the rubber ring (7), and the bristle group (12) is arranged in multiple groups, and the multiple groups of bristle groups (12) are distributed in a ring shape.

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