Automobile ball head with good sealing effect and installation method thereof

Abstract

The application discloses a car ball head with good sealing effect and a mounting method thereof, and relates to the technical field of car ball head mounting, which comprises an upper ball cover, a lower ball cover, a circular through hole is formed in the middle of the top surface of the upper ball cover, a ball head rod is inserted into the circular through hole, a ball head is fixedly arranged at the bottom end of the ball head rod, and the ball head rod is connected with the upper ball cover through a sealing assembly; the outer ring surface of the upper ball cover and the lower ball cover is clamped with a U-shaped clamp, a rectangular clamping block is clamped in the opening of the U-shaped clamp, a hollow cylinder is fixedly arranged on the outer side surface of the rectangular clamping block, a limiting through hole penetrating through the hollow cylinder is formed in the middle of the rectangular clamping block, a threaded rod is inserted into the outer end of the hollow cylinder, a pull ring is fixedly arranged at the outer end of the threaded rod, and the threaded rod is connected with the hollow cylinder through a threaded assembly. Under the premise of ensuring the mounting stability of the car ball head, the sealing effect of the car ball head is improved, the reliable and long-term use of the car ball head is ensured, dust from the outside is prevented from entering the car ball head, and the service life of the ball head is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile ball head installation, and particularly relates to an automobile ball head with good sealing effect and an installation method thereof. BACKGROUND

[0002] Automobile accessories are various units constituting the whole automobile and a kind of product serving the automobile. There are many types of automobile accessories. With the improvement of people's living standards, people's consumption of automobiles is also increasing, and the market for automobile accessories is also becoming larger. In recent years, automobile accessory manufacturers have also been developing rapidly. The automobile ball head is an important automobile accessory. The automobile ball head is a kind of automobile part. The ball pin assembly is connected with the control arm and the steering knuckle. It is required to transmit force and torque to ensure the normal operation of the vehicle. Therefore, rigid connection is required at each connecting part, and slippage, deformation or damage should not occur.

[0003] A Chinese utility model discloses an automobile ball head with a good sealing effect of a lubricating mechanism (publication number: CN211501302U), which comprises a connecting rod and an automobile ball head body. The connecting rod is fixedly installed on the outer surface of the automobile ball head body. The connecting rod comprises an extension rod, a thread, and a first nut. The thread is arranged on the outer surface of the extension rod, and the first nut is screw-connected on the outer surface of the thread. The automobile ball head body comprises a joint, a dust cover, an outer shell, a lubricating shell, and a ball head piece. The dust cover is fixedly installed at the lower end of the joint. The outer shell is riveted to the lower end of the dust cover. The lubricating shell is fixedly installed at the lower end of the outer shell. The ball head piece is arranged in the automobile ball head body.

[0004] During use of the automobile ball head, the following problems exist: 1. Long-time driving of the automobile causes the ball head to be damaged due to insufficient lubrication, loosening of the connection of the steering tie rod, and increase of the friction noise of the steering mechanism, thereby resulting in poor sealing effect; 2. Long-term disassembly and assembly can easily cause wear of the thread of the extension rod, easily cause shaking of the steering wheel and the vehicle, and affect normal driving. SUMMARY

[0005] The present application aims to solve the problems of poor sealing and easy wear of the automobile ball head in the prior art, and provides an automobile ball head with good sealing effect and an installation method thereof.

[0006] In order to solve the problems of poor sealing and easy wear of the automobile ball head in the prior art, the present application adopts the following technical scheme:

[0007] A car ball joint with good sealing effect comprises an upper ball cover and a lower ball cover, wherein the upper ball cover and the lower ball cover are both semicircular and closed into a hollow sphere, a circular through hole is opened in the middle of the top surface of the upper ball cover, a ball rod is inserted into the circular through hole, a ball head is fixed to the bottom end of the ball rod, and the ball rod is connected to the upper ball cover through a sealing assembly;

[0008] The outer ring surfaces of the upper and lower ball covers are clamped with U-shaped clamps, and a rectangular clamping block is clamped in the opening of the U-shaped clamping block. A hollow cylinder is fixed on the outer side surface of the rectangular clamping block, and a limiting through hole that passes through the hollow cylinder is opened in the middle of the rectangular clamping block. A threaded rod is inserted into the outer port of the hollow cylinder, and a pull ring is fixed on the outer end of the threaded rod. The threaded rod is connected to the hollow cylinder through a threaded assembly.

[0009] Preferably, the sealing assembly includes a first sealing ring and a second sealing ring, a first clamping ring is concentrically fixedly provided at the top of the circular through hole, and a second clamping ring is concentrically fixedly provided at the bottom of the circular through hole, and the inner diameter of the first clamping ring is smaller than the inner diameter of the second clamping ring;

[0010] The inner ring surface of the first clamping ring is provided with a concentrically fixed first sealing ring, the inner ring surface of the second clamping ring is provided with a concentrically fixed second sealing ring, and the lower middle portion of the ball head rod passes through the first sealing ring and the second sealing ring in sequence.

[0011] Preferably, a concentrically fixed concave snap ring is provided in the middle of the circular through hole, and the concave snap ring is located between the first snap ring and the second snap ring. A concentrically fixed rubber ring is sleeved on the middle and lower part of the ball head rod, and the outer ring surface of the rubber ring slides and is clamped on the inner ring surface of the concave snap ring.

[0012] Preferably, the middle and upper part of the ball head rod is in the shape of a threaded rod, and the middle and upper part of the ball head rod is provided with a threaded fixing nut, and the middle and upper part of the ball head rod is sequentially provided with a concentrically fixed retaining ring and a second channel steel ring, and the top surface of the upper ball cover is provided with a concentrically fixed first channel steel ring, and the opposite surfaces of the first channel steel ring and the second channel steel ring are provided with a dust-proof telescopic cover that is snap-connected.

[0013] Preferably, double-annular grooves are provided on the outer edges of the opposite surfaces of the upper and lower ball covers, and H-shaped sealing rings are provided on the outer edges of the opposite surfaces of the upper and lower ball covers. The upper and lower sides of the H-shaped sealing ring are both engaged in the double-annular grooves, and the inner interlayer of the H-shaped sealing ring is provided with a concentrically fixed lining interlayer ring.

[0014] Preferably, a first bolt hole is provided on the outer edge of the top surface of the upper ball cover, which passes through the upper ball cover, the H-shaped sealing ring, the liner sandwich ring and the lower ball cover. A first bolt and a first nut are inserted into each of the first bolt holes for matching use. An oil filling hole is provided in the middle of the bottom surface of the lower ball cover, and a threaded sealing oil plug is inserted into the oil filling hole.

[0015] Preferably, the outer annular surfaces of the upper and lower spherical covers are provided with a plurality of circularly arranged threaded holes, and the outer annular surface of the U-shaped clamp is provided with a plurality of double-layered circularly arranged second bolt holes, each of the second bolt holes is inserted with a second bolt, and the inner end of each second bolt is screwed into the corresponding threaded hole;

[0016] Third bolt holes that penetrate the rectangular clamping block are provided on both sides of the open end of the U-shaped clamp, and a third bolt and a third nut for matching use are inserted into each of the third bolt holes.

[0017] Preferably, the threaded assembly includes a planetary shaft and a threaded sleeve. A pair of limit clamps placed side by side and concentrically fixed are provided in the outer port of the hollow cylinder. A limit swivel is provided on the inner ring surface of each limit clamp, and a plurality of circularly arranged planetary shafts are inserted into the opposite surfaces of a pair of limit clamps. The two end portions of each planetary shaft are rotatably inserted in the opposite surfaces of a pair of limit swivels. The middle section of each planetary shaft is sleeved with a concentrically fixed threaded sleeve, and several of the threaded sleeves are threadedly connected to the threaded rod.

[0018] Preferably, the two end portions of the planetary shaft are sleeved with concentrically fixed planetary gears, a pair of internal gear rings are fixed to the opposite surfaces of a pair of the limiting retaining rings, the outer ring surfaces of the pair of internal gear rings are fixed to the inner wall of the hollow cylinder, each of the planetary gears is meshed with the corresponding internal gear ring, an outer hexagonal ring is provided in the outer port of the hollow cylinder, and the outer hexagonal ring is fixed to the adjacent limiting swivel ring.

[0019] The present invention also provides a method for installing a car ball joint with good sealing effect, comprising the following steps:

[0020] Step 1: Place the ball head and ball head rod in the hollow sphere formed by closing the upper and lower ball covers. The top end of the ball head rod passes through the second sealing ring and the first sealing ring in sequence and is threadedly connected to the fixing nut. Then, the dustproof telescopic cover is fixedly installed between the first and second channel steel rings.

[0021] Step 2: The H-shaped sealing ring and the inner lining sandwich ring are pre-placed at the closing portion of the upper and lower ball covers, so that both upper and lower sides of the H-shaped sealing ring are engaged in the double-ring grooves, and then the upper and lower ball covers are locked with the first bolt and the first nut;

[0022] Step 3: The U-shaped clamp is sleeved on the outer annular surface of the upper and lower ball covers, and a rectangular clamp is placed in the opening of the U-shaped clamp. The U-shaped clamp, the upper and lower ball covers are locked by a second bolt, and the U-shaped clamp and the rectangular clamp are locked by a third bolt and a third nut;

[0023] Step 4: When adjusting the threaded rod and the pull ring, rotate the outer hexagonal ring to drive the limit ring and several planetary shafts to revolve, and the planetary gears mesh along the inner gear ring to drive the planetary shafts to rotate, so that the planetary shafts drive the threaded sleeves to rotate in a planetary manner. The spiral action of the threaded sleeve and the threaded rod drives the threaded rod to be telescopically adjusted along the hollow cylinder.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In the present invention, through the coordinated use of the sealing assembly, the inner annular surfaces of the first sealing ring and the second sealing ring form a trumpet-shaped through hole, and the middle portion of the ball head rod abuts against the inner annular surface of the first sealing ring to form a tight fit. When the ball head rod is steered and adjusted, it can move in multiple directions along the first sealing ring. Because sufficient clearance is reserved between the outer diameter of the rubber ring and the inner diameter of the concave retaining ring, the ball head rod drives the rubber ring to rotate and swing synchronously within the concave retaining ring during steered adjustment, which can effectively ensure the sealing between the rubber ring and the concave retaining ring.

[0026] 2. In the present invention, through the coordinated use of the threaded components, several planetary shafts synchronously drive the threaded sleeves to perform planetary rotation. The spiral action of the threaded sleeves and the threaded rods drives the threaded rods to perform telescopic adjustment along the hollow cylinder. It is a high-precision and high-efficiency transmission method. Compared with other transmission methods, it has the advantages of high precision, strong load-bearing capacity, good stability and long service life.

[0027] In summary, the present invention improves the sealing effect of the automobile ball head while ensuring the installation stability of the automobile ball head, ensures the reliable and long-term use of the automobile ball head, prevents external dust from entering the automobile ball head, and extends the service life of the ball head. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0030] Figure 2 It is a schematic cross-sectional view of the main structure of the present invention;

[0031] Figure 3 This is an exploded schematic diagram of the main structure of the present invention;

[0032] Figure 4 Schematic diagram of the upper ball cover and the lower ball cover structure of the present invention;

[0033] Figure 5 For the present invention Figure 4 Schematic cross-section diagram of

[0034] Figure 6 For the present invention Figure 5 Explosion diagram of

[0035] Figure 7 This is a schematic diagram of the rectangular block and threaded rod structure of the present invention;

[0036] Figure 8 For the present invention Figure 7 Schematic cross-section diagram;

[0037] Figure 9 For the present invention Figure 8 Explosion diagram of

[0038] Serial numbers in the figure: 1. Upper ball cover; 11. First retaining ring; 12. Second retaining ring; 13. Inner concave retaining ring; 14. First sealing ring; 15. Second sealing ring; 16. H-type sealing ring; 17. Liner sandwich ring; 18. First channel steel ring; 2. Lower ball cover; 21. Sealing oil plug; 22. Ball head rod; 23. Ball head; 24. Rubber ring; 25. Retaining ring; 26. Second channel steel ring; 27. Dustproof telescopic cover; 28. Fixing nut; 3. U-shaped clamp; 31. Rectangular clamp block; 32. Hollow cylinder; 33. Threaded rod; 34. Pull ring; 4. Limiting retaining ring; 41. Internal gear ring; 42. Limiting swivel; 43. Planetary shaft; 45. Planetary gear; 44. Threaded sleeve; 46. External hexagonal ring. DETAILED DESCRIPTION

[0039] 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. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Example 1: This example provides a car ball joint with good sealing effect, see Figure 1-9 Specifically, it includes an upper ball cover 1 and a lower ball cover 2. Both the upper ball cover 1 and the lower ball cover 2 are semicircular and closed into a hollow sphere. A circular through hole is opened in the middle of the top surface of the upper ball cover 1. A ball head rod 22 is inserted into the circular through hole. A ball head 23 is fixed to the bottom end of the ball head rod 22. The ball head rod 22 is connected to the upper ball cover 1 through a sealing assembly.

[0041] The outer ring surfaces of the upper ball cover 1 and the lower ball cover 2 are clamped with a U-shaped clamp 3, and a rectangular clamping block 31 is clamped in the opening of the U-shaped clamp 3. A hollow cylinder 32 is fixedly provided on the outer side surface of the rectangular clamping block 31, and a limiting through hole that passes through the hollow cylinder 32 is opened in the middle of the rectangular clamping block 31. A threaded rod 33 is inserted into the outer port of the hollow cylinder 32, and a pull ring 34 is fixed on the outer end of the threaded rod 33. The threaded rod 33 is connected to the hollow cylinder 32 through a threaded assembly.

[0042] In the specific implementation process, Figure 5 and Figure 6 As shown, the sealing assembly includes a first sealing ring 14 and a second sealing ring 15. A first snap ring 11 is concentrically fixed to the top of the circular through hole, and a second snap ring 12 is concentrically fixed to the bottom of the circular through hole. The inner diameter of the first snap ring 11 is smaller than the inner diameter of the second snap ring 12.

[0043] The inner ring surface of the first snap ring 11 is provided with a first sealing ring 14 fixed concentrically thereto, and the inner ring surface of the second snap ring 12 is provided with a second sealing ring 15 fixed concentrically thereto. The lower middle portion of the ball head rod 22 passes through the first sealing ring 14 and the second sealing ring 15 in sequence.

[0044] The inner ring surfaces of the first sealing ring 14 and the second sealing ring 15 form a trumpet-shaped through hole, and the middle part of the ball head rod 22 is pressed against the inner ring surface of the first sealing ring 14 to form a tight fit. When the ball head rod 22 is steered and adjusted, it can move in multiple directions along the first sealing ring 14, and the second sealing ring 15 plays a limiting role.

[0045] In the specific implementation process, Figure 5 and Figure 6 As shown, the middle and upper part of the ball head rod 22 is in the shape of a threaded rod, and the middle and upper part of the ball head rod 22 is sleeved with a threaded fixing nut 28, and the middle and upper part of the ball head rod 22 is sleeved with a concentrically fixed retaining ring 25 and a second channel steel ring 26 in sequence. The top surface of the upper ball cover 1 is provided with a concentrically fixed first channel steel ring 18, and the opposite surfaces of the first channel steel ring 18 and the second channel steel ring 26 are provided with a snap-fit ​​dustproof telescopic cover 27; the dustproof telescopic cover 27 plays both a dustproof and a sealing role.

[0046] In the specific implementation process, Figure 5 and Figure 6 As shown, double-annular grooves are provided on the outer edges of the opposite surfaces of the upper spherical cover 1 and the lower spherical cover 2, and H-shaped sealing rings 16 are provided on the outer edges of the opposite surfaces of the upper spherical cover 1 and the lower spherical cover 2. The upper and lower sides of the H-shaped sealing ring 16 are both engaged in the double-annular grooves, and the inner interlayer of the H-shaped sealing ring 16 is provided with a concentrically fixed inner lining interlayer ring 17; the inner lining interlayer ring 17 enhances the firmness of the H-shaped sealing ring 16, and the engagement of the H-shaped sealing ring 16 with the double-annular grooves enhances the sealing performance of the closure of the upper spherical cover 1 and the lower spherical cover 2.

[0047] It should be noted that in this embodiment, a first bolt hole is formed on the outer edge of the top surface of the upper ball cover 1, which passes through the upper ball cover 1, the H-shaped sealing ring 16, the liner sandwich ring 17, and the lower ball cover 2. A first bolt and a first nut are inserted into each first bolt hole for use with the upper ball cover 1. An oil filling hole is formed in the middle of the bottom surface of the lower ball cover 2, and a sealing oil plug 21 with a threaded connection is inserted into the oil filling hole. The upper ball cover 1 and the lower ball cover 2 are locked by the first bolt and the first nut, and the sealing oil plug 21 is opened, and oil can be injected into the upper ball cover 1 and the lower ball cover 2 through the oil filling hole for lubrication.

[0048] The outer ring surfaces of the upper ball cover 1 and the lower ball cover 2 are provided with a plurality of circularly arranged threaded holes. The outer ring surface of the U-shaped clamp 3 is provided with a plurality of double-layered circularly arranged second bolt holes. A second bolt is inserted into each second bolt hole, and the inner end of each second bolt is screwed into the corresponding threaded hole. The U-shaped clamp 3, the upper ball cover 1, and the lower ball cover 2 are locked by the second bolts.

[0049] Third bolt holes that penetrate the rectangular clamping block 31 are provided on both sides of the open end of the U-shaped clamp 3, and a third bolt and a third nut are inserted into each third bolt hole for matching use; the U-shaped clamp 3 and the rectangular clamping block 31 are locked by the third bolt and the third nut.

[0050] Embodiment 2: In embodiment 1, there is still the problem of poor sealing between the ball head rod 22 and the first sealing ring 14 and the second sealing ring 15. Therefore, based on embodiment 1, this embodiment further includes:

[0051] In the specific implementation process, Figure 5 and Figure 6 As shown, a concentrically fixed inner concave snap ring 13 is provided in the middle of the circular through hole, and the inner concave snap ring 13 is located between the first snap ring 11 and the second snap ring 12. A concentrically fixed rubber ring 24 is sleeved on the middle and lower part of the ball head rod 22, and the outer ring surface of the rubber ring 24 slides and is clamped on the inner ring surface of the inner concave snap ring 13; since there is sufficient gap between the outer diameter of the rubber ring 24 and the inner diameter of the inner concave snap ring 13, when the ball head rod 22 is turned and adjusted, it drives the rubber ring 24 to rotate and swing synchronously in the inner concave snap ring 13, which can effectively ensure the sealing of the rubber ring 24 and the inner concave snap ring 13.

[0052] Embodiment 3: In embodiment 1, there is still the problem of inconvenience in adjusting the length of the threaded rod 33 and the pull ring 34. Therefore, based on embodiment 1, this embodiment further includes:

[0053] In the specific implementation process, Figure 8 and Figure 9As shown, the threaded assembly includes a planetary shaft 43 and a threaded sleeve 44. A pair of limiting clamps 4 placed side by side and concentrically fixed are provided in the outer port of the hollow cylinder 32. A limiting swivel 42 is provided in the inner ring surface of each limiting clamp 4 for rotational engagement. A plurality of circularly arranged planetary shafts 43 are inserted into the opposite surfaces of a pair of limiting clamps 4. The two end portions of each planetary shaft 43 are rotatably inserted into the opposite surfaces of a pair of limiting swivels 42. The middle section of each planetary shaft 43 is sleeved with a concentrically fixed threaded sleeve 44. Several threaded sleeves 44 are threadedly connected to the threaded rod 33. When the planetary shafts 43 rotate planetarily, the threaded sleeves 44 are synchronously driven to rotate planetarily. The spiral action of the threaded sleeves 44 and the threaded rod 33 drives the threaded rod 33 to be telescopically adjusted along the hollow cylinder 32. It is a high-precision and high-efficiency transmission method. Compared with other transmission methods, it has the advantages of high precision, strong bearing capacity, good stability and long service life.

[0054] Embodiment 4: In embodiment 3, there is still the problem that the planetary shaft 43 cannot perform planetary rotation. Therefore, based on embodiment 3, this embodiment further includes:

[0055] In the specific implementation process, Figure 8 and Figure 9 As shown, the two ends of the planetary shaft 43 are sleeved with concentrically fixed planetary gears 45, and the opposite surfaces of a pair of limit snap rings 4 are fixed with a pair of internal gear rings 41. The outer ring surfaces of the pair of internal gear rings 41 are fixedly connected to the inner wall of the hollow cylinder 32. Each planetary gear 45 is meshed with the corresponding internal gear ring 41. An outer hexagonal ring 46 is provided in the outer port of the hollow cylinder 32, and the outer hexagonal ring 46 is fixedly connected to the adjacent limit rotating ring 42; rotating the outer hexagonal ring 46 drives the limit rotating ring 42 and several planetary shafts 43 to revolve, and the planetary gears 45 mesh with the inner gear ring 41, driving the planetary shaft 43 to rotate, so that the planetary shaft 43 performs planetary rotation.

[0056] Embodiment 5: Specifically, the working principle and operation method of the present invention are as follows:

[0057] Step 1: Place the ball head 23 and ball head rod 22 in the hollow sphere formed by closing the upper ball cover 1 and the lower ball cover 2. The top end of the ball head rod 22 passes through the second sealing ring 15 and the first sealing ring 14 in sequence and is threadedly connected to the fixing nut 28. Then, the dustproof telescopic cover 27 is fixedly installed between the first channel steel ring 18 and the second channel steel ring 26.

[0058] Step 2: The H-shaped sealing ring 16 and the inner lining sandwich ring 17 are pre-placed at the closed position of the upper ball cover 1 and the lower ball cover 2, so that the upper and lower sides of the H-shaped sealing ring 16 are both engaged in the double-ring groove, and then the upper ball cover 1 and the lower ball cover 2 are locked by the first bolt and the first nut;

[0059] Step three, the U-shaped clamp 3 is sleeved on the outer ring surface of the upper ball cover 1 and the lower ball cover 2, and the rectangular clamping block 31 is placed in the opening of the U-shaped clamp 3, the U-shaped clamp 3, the upper ball cover 1 and the lower ball cover 2 are locked through the second bolt, and the U-shaped clamp 3 and the rectangular clamping block 31 are locked through the third bolt and the third nut;

[0060] Step four, when the threaded rod 33 and the pull ring 34 are adjusted, the outer hex ring 46 drives the limiting rotating ring 42 and the plurality of planetary shafts 43 to revolve, the planetary gear 45 meshes with the inner gear ring 41 to drive the planetary shaft 43 to rotate, so that the planetary shaft 43 drives the threaded sleeve 44 to rotate, and the threaded sleeve 44 and the threaded rod 33 are screwed to drive the threaded rod 33 to extend and retract along the hollow cylinder 32.

[0061] The application improves the sealing effect of the automobile ball head under the premise of the installation stability of the automobile ball head, ensures the reliable and long-term use of the automobile ball head, avoids the dust from the outside into the automobile ball head, and prolongs the service life of the ball head.

[0062] The above is only the preferred specific implementation of the application, but the protection scope of the application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A car ball head with good sealing effect, comprising an upper ball cover (1) and a lower ball cover (2), characterized in that: The upper ball cover (1) and the lower ball cover (2) are both semicircular and closed into a hollow sphere. A circular through hole is provided in the middle of the top surface of the upper ball cover (1). A ball head rod (22) is inserted into the circular through hole. A ball head (23) is fixed to the bottom end of the ball head rod (22). The ball head rod (22) is connected to the upper ball cover (1) through a sealing assembly. The outer annular surfaces of the upper ball cover (1) and the lower ball cover (2) are clamped with a U-shaped clamp (3), and a rectangular clamping block (31) is clamped in the opening of the U-shaped clamp (3). A hollow cylinder (32) is fixedly provided on the outer side surface of the rectangular clamping block (31), and a limiting through hole that penetrates the hollow cylinder (32) is opened in the middle of the rectangular clamping block (31). A threaded rod (33) is inserted into the outer end of the hollow cylinder (32), and a pull ring (34) is fixed on the outer end of the threaded rod (33). The threaded rod (33) is connected to the hollow cylinder (32) through a threaded assembly. The outer ring surfaces of the upper ball cover (1) and the lower ball cover (2) are provided with a plurality of circularly arranged threaded holes, the outer ring surface of the U-shaped clamp (3) is provided with a plurality of double-layered and circularly arranged second bolt holes, each of which is inserted with a second bolt, and the inner end of each second bolt is screwed into the corresponding threaded hole; third bolt holes are provided on both sides of the open end of the U-shaped clamp (3) and are connected to the rectangular clamping block (31), and a third bolt and a third nut for use in conjunction are inserted into each of the third bolt holes; The threaded assembly comprises a planetary shaft (43) and a threaded sleeve (44); a pair of position limiting clamps (4) placed side by side and concentrically fixed are provided in the outer port of the hollow cylinder (32); a position limiting swivel (42) connected in rotation and snap-fit ​​is provided in the inner ring surface of each position limiting clamp (4); a plurality of circularly arranged planetary shafts (43) are inserted into the opposite surfaces of the pair of position limiting clamps (4); both ends of each planetary shaft (43) are rotatably inserted into the opposite surfaces of the pair of position limiting swivels (42); a concentrically fixed threaded sleeve (44) is sleeved on the middle section of each planetary shaft (43); and a plurality of threaded sleeves (44) are threadedly connected to the threaded rod (33); The two ends of the planetary shaft (43) are sleeved with concentrically fixed planetary gears (45), and the opposite surfaces of a pair of the limiting snap rings (4) are fixed with a pair of internal gear rings (41). The outer ring surfaces of the pair of internal gear rings (41) are fixedly connected to the inner wall of the hollow cylinder (32). Each of the planetary gears (45) is meshed and connected with the corresponding internal gear ring (41). An outer hexagonal ring (46) is provided in the outer port of the hollow cylinder (32), and the outer hexagonal ring (46) is fixedly connected to the adjacent limiting rotating ring (42).

2. The automotive ball joint with good sealing effect according to claim 1, characterized in that: The sealing assembly comprises a first sealing ring (14) and a second sealing ring (15); a first snap ring (11) is provided concentrically fixedly at the top of the circular through hole; a second snap ring (12) is provided concentrically fixedly at the bottom of the circular through hole; the inner diameter of the first snap ring (11) is smaller than the inner diameter of the second snap ring (12); The inner ring surface of the first retaining ring (11) is provided with a concentrically fixed first sealing ring (14), the inner ring surface of the second retaining ring (12) is provided with a concentrically fixed second sealing ring (15), and the lower middle portion of the ball head rod (22) passes through the first sealing ring (14) and the second sealing ring (15) in sequence.

3. The automotive ball joint with good sealing effect according to claim 2, characterized in that: A concentrically fixed inner concave snap ring (13) is provided in the middle of the circular through hole, and the concave snap ring (13) is located between the first snap ring (11) and the second snap ring (12). A concentrically fixed rubber ring (24) is sleeved on the middle and lower part of the ball head rod (22), and the outer ring surface of the rubber ring (24) is slidably clamped on the inner ring surface of the concave snap ring (13).

4. The automotive ball joint with good sealing effect according to claim 3, characterized in that: The middle and upper section of the ball head rod (22) is in the shape of a threaded rod. The middle and upper section of the ball head rod (22) is sleeved with a threaded fixing nut (28). The middle and upper section of the ball head rod (22) is sleeved with a concentrically fixed retaining ring (25) and a second channel steel ring (26) in sequence. The top surface of the upper ball cover (1) is provided with a concentrically fixed first channel steel ring (18). The opposing surfaces of the first channel steel ring (18) and the second channel steel ring (26) are provided with a snap-fitted dustproof telescopic cover (27).

5. The automotive ball joint with good sealing effect according to claim 4, characterized in that: Double-ring grooves are provided on the outer edges of the opposing surfaces of the upper ball cover (1) and the lower ball cover (2), and an H-shaped sealing ring (16) is provided on the outer edges of the opposing surfaces of the upper ball cover (1) and the lower ball cover (2). The upper and lower sides of the H-shaped sealing ring (16) are both engaged in the double-ring grooves, and the inner interlayer of the H-shaped sealing ring (16) is provided with a concentrically fixed inner lining interlayer ring (17).

6. The automotive ball joint with good sealing effect according to claim 5, characterized in that: The outer edge of the top surface of the upper ball cover (1) is provided with a first bolt hole that passes through the upper ball cover (1), the H-shaped sealing ring (16), the lining sandwich ring (17), and the lower ball cover (2), and a first bolt and a first nut for use therewith are inserted into each of the first bolt holes. The middle portion of the bottom surface of the lower ball cover (2) is provided with an oil filling hole, and a threaded sealing oil plug (21) is inserted into the oil filling hole.

7. The method for installing a car ball joint with good sealing effect according to claim 6, characterized in that: The following steps are involved: Step 1: The ball head (23) and the ball head rod (22) are placed in the hollow sphere formed by closing the upper ball cover (1) and the lower ball cover (2). The top end of the ball head rod (22) passes through the second sealing ring (15) and the first sealing ring (14) in sequence and is threadedly connected to the fixing nut (28). The dustproof telescopic cover (27) is then fixedly installed between the first channel steel ring (18) and the second channel steel ring (26). Step 2: The H-shaped sealing ring (16) and the inner lining sandwich ring (17) are pre-arranged at the closed position of the upper ball cover (1) and the lower ball cover (2), so that the upper and lower sides of the H-shaped sealing ring (16) are both engaged in the double-ring groove, and then the upper ball cover (1) and the lower ball cover (2) are locked by the first bolt and the first nut; Step 3: The U-shaped clamp (3) is sleeved on the outer annular surfaces of the upper ball cover (1) and the lower ball cover (2), and a rectangular clamping block (31) is placed in the opening of the U-shaped clamp (3). The U-shaped clamp (3), the upper ball cover (1), and the lower ball cover (2) are locked by a second bolt, and the U-shaped clamp (3) and the rectangular clamping block (31) are locked by a third bolt and a third nut; Step 4: When adjusting the threaded rod (33) and the pull ring (34), the outer hexagonal ring (46) is rotated to drive the limit ring (42) and the plurality of planetary shafts (43) to revolve, and the planetary gears (45) mesh along the inner gear ring (41) to drive the planetary shafts (43) to rotate, so that the planetary shafts (43) drive the threaded sleeve (44) to perform planetary rotation, and the spiral action of the threaded sleeve (44) and the threaded rod (33) drives the threaded rod (33) to be telescopically adjusted along the hollow cylinder (32).

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