CN219948306U - Maintenance-free front axle assembly - Google Patents
Maintenance-free front axle assembly Download PDFInfo
- Publication number
- CN219948306U CN219948306U CN202320770839.8U CN202320770839U CN219948306U CN 219948306 U CN219948306 U CN 219948306U CN 202320770839 U CN202320770839 U CN 202320770839U CN 219948306 U CN219948306 U CN 219948306U
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- Prior art keywords
- steering knuckle
- steering
- front axle
- maintenance
- knuckle
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- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 7
- 239000004917 carbon fiber Substances 0.000 claims abstract description 7
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 6
- 239000004519 grease Substances 0.000 claims description 13
- 239000003921 oil Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910000746 Structural steel Inorganic materials 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 230000035939 shock Effects 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 210000002445 nipple Anatomy 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 4
- 238000005562 fading Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 208000035874 Excoriation Diseases 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Vehicle Body Suspensions (AREA)
Abstract
The utility model relates to the technical field of micro-passenger car steering systems, and discloses a maintenance-free front axle assembly, which is of a symmetrical structure and comprises a bridge pipe welding piece, a steering knuckle vertical shaft pin, a left steering knuckle, a right steering knuckle, a brake assembly, a long steering pull rod, a short steering pull rod and a joint assembly, wherein two ends of the bridge pipe welding piece are respectively connected with the left steering knuckle and the right steering knuckle through the steering knuckle vertical shaft pin, and the outer sides of the left steering knuckle and the right steering knuckle are respectively connected with the brake assembly. The maintenance-free front axle assembly has the advantages that the steering knuckle vertical shaft pin internal inclination angle of the axle pipe weldment is adjusted to be 7 degrees and is about equal, the front wheel automatic centering function is realized, the force applied to the steering wheel during steering is reduced, the steering operation is lighter, the brake disc is made of reinforced composite ceramic materials synthesized by carbon fibers and silicon carbide, the weight of the brake disc can be obviously reduced, meanwhile, the heat fading can be effectively and stably resisted, the durability of a product is greatly improved, and the maintenance-free front axle assembly can be free from maintenance for a long time.
Description
Technical Field
The utility model relates to the technical field of micro-passenger car steering systems, in particular to a maintenance-free front axle assembly.
Background
At present, the steering knuckle vertical shaft pin of the micro-passenger car type front axle in the existing market has a large inclination angle, and when the front wheel deflects around the steering knuckle vertical shaft pin during steering, larger sliding is generated between the tire and the road surface, so that the friction resistance between the tire and the road surface is increased, the steering is heavy, and the abrasion of the tire is accelerated; the brake disc is made of HT250 material, has large dead weight and poor heat fading resistance, and brings great hidden trouble to safe running; the front axle has poor overall waterproof performance, poor trafficability to deeper wading road surfaces, and easy failure of various forms of heavy parts such as bearings, brake calipers and the like caused by long-time immersion in water.
The joint assembly is connected with the left steering knuckle and the right steering knuckle by adopting a cylindrical matching structure, the centering is relatively poor, the assembly and the disassembly cannot be quickly carried out, the matching gap or interference cannot be adjusted, and the sealing performance is relatively poor; the joint assembly has no grease nipple structure, and the working surfaces of the ball pin and the ball seat cannot be effectively lubricated, so that the problems of local severe abrasion or early abrasion occur; the parts of the left steering knuckle, the right steering knuckle and the like adopt a casting process, the dead weight is large, and the manufacturing cost is high.
Disclosure of Invention
The present utility model is directed to a maintenance-free front axle assembly, which solves the problems set forth in the above-mentioned background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the front axle is of symmetrical structure and comprises axle tube weldment, steering knuckle vertical shaft pin, left steering knuckle, right steering knuckle, brake component, long steering pull rod, short steering pull rod and joint assembly.
The two ends of the bridge pipe weldment are respectively connected with the left steering knuckle and the right steering knuckle through steering knuckle vertical shaft pins, the outer sides of the left steering knuckle and the right steering knuckle are respectively connected with the brake components, the two ends of the long steering pull rod are respectively connected with the left steering knuckle and the right steering knuckle through joint assemblies, and the two ends of the short steering pull rod are respectively connected with the right steering knuckle, steering pipe shafts or steering gears through joint assemblies.
The inner inclination angle of the steering knuckle vertical shaft pin of the bridge pipe weldment is 7 degrees and is equal to the left steering knuckle and the right steering knuckle, the joint assembly is connected with the left steering knuckle and the right steering knuckle and adopts a static pressure taper fit structure, the joint assembly is provided with a grease nipple structure, all bearings of the front axle are sealed by adopting a bidirectional sealing oil seal, and the manufacturing process of parts of the left steering knuckle and the right steering knuckle is adjusted to stamping by casting.
Preferably, the bridge pipe weldment consists of a front bridge welded pipe, a bracket arm seat, a shock absorber lifting lug and bearing seat components, wherein the coaxiality of bearing holes at two ends of the bearing seat is less than or equal to phi 0.08mm, and a tapered roller bearing is adopted.
Preferably, the steering knuckle vertical shaft pin is made of high-quality carbon structural steel with the grade of 45, the mechanical property grade is not lower than 8.8, the surface roughness is not more than 3.2 mu m, and the steering knuckle vertical shaft pin is in interference fit with the left steering knuckle and the right steering knuckle.
Preferably, the left steering knuckle and the right steering knuckle are made of carbon structural steel with the brand number of Q235A, the perpendicularity of a bearing position is less than or equal to 0.08mm, a deep groove ball bearing is adopted, a spacer bush structure is adopted between the bearings, a brake disc is arranged on the outer ring of the deep groove ball bearing, and the brake disc is made of reinforced composite ceramic material synthesized by carbon fibers and silicon carbide and is waterproof brake calipers.
Preferably, a bridge pipe is arranged between the shock absorber lifting lug and the bracket arm seat, a stabilizer bar lifting lug is arranged at the top of the bridge pipe, a flange plate is fixedly connected to the outer ring of the bidirectional sealing oil seal, and a wheel bolt is fixedly connected to the outer side of the flange plate.
Preferably, the planeness of the friction surface of the brake disc is less than or equal to 0.05mm, the jumping amount of the friction surface is less than or equal to 0.10mm, the roughness of the friction surface is less than or equal to 3.2 mu m, and the planeness of the mounting surface is less than or equal to 0.05mm.
Preferably, the long steering pull rod and the short steering pull rod are made of high-quality carbon structural steel with the mark of 20, left-handed threads and right-handed threads are respectively processed at two ends, and after more than 100 ten thousand fatigue life tests, abnormal conditions such as cracks, fractures and the like are not generated.
Preferably, the connector assembly does not allow the ball pin to break and to disengage from the ball seat under normal use conditions.
Compared with the prior art, the utility model provides a maintenance-free front axle assembly, which has the following beneficial effects:
1. the maintenance-free front axle assembly has the advantages that the internal inclination angle of the steering knuckle vertical shaft pin of the axle tube weldment is adjusted to be 7 degrees and is about equal, the front wheel automatic aligning function is realized, the force applied to the steering wheel during steering is reduced, the steering operation is lighter, the impact force transmitted to the steering wheel from the front wheel is reduced, and the driving comfort is improved; the brake disc is made of the reinforced composite ceramic material synthesized by the carbon fiber and the silicon carbide, so that the weight of the brake disc can be obviously reduced, meanwhile, the heat decay can be effectively and stably resisted, the durability of the product is greatly improved, and the maintenance can be avoided for a long time.
2. The maintenance-free front axle assembly adopts the waterproof brake caliper, so that the problem of braking force water decay of the friction plate after wading is effectively avoided, and the brake is sensitive and reliable even if the whole front axle is fully filled in water; the joint assembly is connected with the left knuckle and the right knuckle by adopting a static pressure taper fit structure, so that the transmission load is large, the disassembly and the assembly are convenient, and the fit contact surface is not easy to damage; the joint assembly is provided with a grease nozzle structure, and the lubricating grease filled by the grease nozzle through the oil gun can effectively lubricate the working surfaces of the ball pin and the ball seat, so that the problems of local severe abrasion or early abrasion are avoided; all bearings of the front axle are sealed by adopting a bidirectional sealing oil seal, so that muddy water is prevented from invading a bearing chamber, and bearing failure is avoided; the manufacturing process of parts such as the left steering knuckle and the right steering knuckle is adjusted to stamping by casting, so that the manufacturing cost is lower, the lightweight design can be realized, and the weight of the whole bridge is reduced.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a bridge tube weldment construction;
FIG. 3 is a schematic illustration of the joint assembly and knuckle assembly;
FIG. 4 is a schematic illustration of a brake assembly;
fig. 5 is a cross-sectional view of a portion of the structure of the present utility model.
In the figure: 1. a brake assembly; 2. knuckle vertical pin; 3. a left knuckle; 4. bridge pipe weldment; 5. a two-way seal oil seal; 6. tapered roller bearings; 7. a joint assembly; 8. a long steering tie rod; 9. a short steering tie rod; 10. a right knuckle; 11. a brake caliper; 12. a bearing seat; 13. a shock absorber lifting lug; 14. a bracket arm seat; 15. a stabilizer bar lifting lug; 16. a bridge pipe; 17. wheel bolts; 18. a flange plate; 19. a spacer bush; 20. deep groove ball bearings; 21. a brake disc.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1-5, the present utility model provides a technical solution: the front axle is of a symmetrical structure and comprises a bridge pipe welding piece 4, a steering knuckle vertical shaft pin 2, a left steering knuckle 3, a right steering knuckle 10, a brake component 1, a long steering pull rod 8, a short steering pull rod 9 and a joint assembly 7, wherein two ends of the bridge pipe welding piece 4 are respectively connected with the left steering knuckle 3 and the right steering knuckle 10 through the steering knuckle vertical shaft pin 2, the outer sides of the left steering knuckle 3 and the right steering knuckle 10 are respectively connected with the brake component 1, two ends of the long steering pull rod 8 are respectively connected with the left steering knuckle 3 and the right steering knuckle 10 through the joint assembly 7, two ends of the short steering pull rod 9 are respectively connected with the right steering knuckle 10, a steering pipe shaft or a steering machine through the joint assembly 7, the inner dip angle of the steering knuckle pin 2 of the bridge pipe welding piece 4 is 7 DEG and is equal to the left steering knuckle and the right steering knuckle 10, the joint assembly 7 is connected with the left steering knuckle 3 and the right steering knuckle 10 through the steering shaft pin 8, the joint assembly 7 is provided with a lubricating grease nozzle structure, all bearings of the front axle are sealed through a bidirectional seal 5, and parts of the left steering knuckle 3 and the right steering knuckle 10 are manufactured by a stamping process.
The bridge pipe weldment 4 consists of front bridge welded pipes, a bracket arm seat 14, a shock absorber lifting lug 13 and bearing seat 12 components, wherein the coaxiality of bearing holes at two ends of the bearing seat 12 is less than or equal to phi 0.08mm, a tapered roller bearing 6 is adopted, a steering knuckle vertical shaft pin 2 is made of high-quality carbon structural steel with the grade of 45, the mechanical property grade is not lower than 8.8, the surface roughness is less than or equal to 3.2 mu m, the assembly of the bridge pipe weldment with a left steering knuckle 3 and a right steering knuckle 10 is in interference fit, the left steering knuckle 3 and the right steering knuckle 10 are made of carbon structural steel with the grade of Q235A, the perpendicularity of a bearing position is less than or equal to 0.08mm, a deep groove ball bearing 20 is adopted, a spacer 19 structure is adopted between the bearings, a brake disc 21 is arranged on the outer ring of the deep groove ball bearing 20, the brake disc 21 is made of reinforced composite ceramic material synthesized by carbon fiber and silicon carbide, a waterproof brake caliper 11 is adopted, A bridge tube 16 is arranged between a shock absorber lifting lug 13 and a bracket seat 14, a stabilizer lifting lug 15 is arranged at the top of the bridge tube 16, a flange 18 is fixedly connected to the outer ring of a bidirectional sealing oil seal 5, a wheel bolt 17 is fixedly connected to the outer side of the flange 18, the planeness of a friction surface of a brake disc 21 is less than or equal to 0.05mm, the jumping amount of the friction surface is less than or equal to 0.10mm, the roughness of the friction surface is less than or equal to 3.2 mu m, the planeness of a mounting surface is less than or equal to 0.05mm, a long steering pull rod 8 and a short steering pull rod 9 are made of high-quality carbon structural steel with the mark of 20, left-handed threads and right-handed threads are respectively machined at two ends, after more than 100 thousands of fatigue life tests are required, abnormal conditions such as cracks, breakage and the like cannot occur, and under normal use conditions, the ball pin cannot be broken, and cannot be separated from a ball seat.
Further: the steering knuckle vertical shaft pin 2 of the bridge pipe weldment 4 is adjusted to 7 degrees and equal in inner inclination angle, has the function of automatically aligning the front wheels, reduces the force applied to the steering wheel during steering, ensures that steering operation is lighter, reduces the impact force transmitted to the steering wheel from the front wheels, and improves driving comfort; the brake disc 21 is made of reinforced composite ceramic material synthesized by carbon fiber and silicon carbide, so that the weight of the brake disc 21 can be obviously reduced, meanwhile, the heat fading can be effectively and stably resisted, the durability of the product can be greatly improved, the maintenance can be free for a long time, the problem of water fading of the braking force of the friction plate after wading can be effectively avoided by adopting the waterproof brake caliper 11, and the brake is sensitive and reliable even if the whole front axle is fully filled in water; the joint assembly 7 is connected with the left steering knuckle 3 and the right steering knuckle 10 by adopting a static pressure taper fit structure, so that the transmission load is large, the disassembly and the assembly are convenient, and the fit contact surface is not easy to damage; the joint assembly 7 is provided with a grease nozzle structure, and the lubricating grease filled by the grease nozzle through the oil gun can effectively lubricate the working surfaces of the ball pin and the ball seat, so that the problems of local severe abrasion or early abrasion are avoided; all bearings of the front axle are sealed by adopting a bidirectional sealing oil seal 5, so that muddy water is prevented from invading a bearing chamber, and bearing failure is avoided; the manufacturing process of the parts such as the left steering knuckle 3 and the right steering knuckle 10 is adjusted to stamping by casting, so that the manufacturing cost is lower, the lightweight design can be realized, and the weight of the whole bridge is reduced.
In the actual operation process, when the device is used, the inner inclination angle of the steering knuckle vertical shaft pin 2 of the bridge pipe weldment 4 is 7 degrees and is about equal, so that the automatic front wheel aligning function is realized, the force applied to the steering wheel during steering and the impact force transmitted to the steering wheel from the front wheel are reduced, and the brake disc 21 is made of reinforced composite ceramic materials synthesized by carbon fibers and silicon carbide, so that the weight of the brake disc 21 is reduced, and the heat fading can be effectively and stably resisted; the waterproof brake caliper 11 is adopted, so that the problem of braking force water decay of a friction plate after wading is effectively avoided, the joint assembly 7 is connected with the left knuckle 3 and the right knuckle 10 to adopt a static pressure taper fit structure, the transmission load is large, the disassembly and the assembly are convenient, and the fit contact surface is not easy to damage; the joint assembly 7 is provided with a grease nipple structure, grease filled through the grease nipple by using an oil gun can effectively lubricate the working surfaces of the ball pin and the ball seat, so that the problem of local severe abrasion or early abrasion is avoided, the tapered roller bearing 6 and the deep groove ball bearing 20 of the front axle are sealed by adopting the bidirectional sealing oil seal 5, muddy water is prevented from invading a bearing chamber, bearing failure is avoided, the manufacturing process of parts such as the left knuckle 3, the right knuckle 10 and the like is adjusted to stamping by casting, the manufacturing cost is lower, the lightweight design can be realized, and the weight of the whole axle is reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Claims (7)
1. A maintenance-free front axle assembly is characterized in that: the front axle is of a symmetrical structure and comprises an axle tube welding piece (4), a steering knuckle vertical shaft pin (2), a left steering knuckle (3), a right steering knuckle (10), a brake assembly (1), a long steering pull rod (8), a short steering pull rod (9) and a joint assembly (7);
two ends of the bridge pipe weldment (4) are respectively connected with the left steering knuckle (3) and the right steering knuckle (10) through steering knuckle vertical shaft pins (2), the outer sides of the left steering knuckle (3) and the right steering knuckle (10) are respectively connected with the brake assembly (1), two ends of the long steering pull rod (8) are respectively connected with the left steering knuckle (3) and the right steering knuckle (10) through joint assemblies (7), and two ends of the short steering pull rod (9) are respectively connected with the right steering knuckle (10), steering pipe shafts or steering machines through the joint assemblies (7);
the steering knuckle vertical shaft pin (2) of the bridge pipe weldment (4) has an inner inclination angle of 7 degrees and is equal to the left steering knuckle and the right steering knuckle (10), the joint assembly (7) is connected with the left steering knuckle (3) and the right steering knuckle (10) to adopt a static pressure taper fit structure, the joint assembly (7) is provided with a grease nipple structure, all bearings of the front axle are sealed by adopting a bidirectional sealing oil seal (5), and the manufacturing process of parts of the left steering knuckle (3) and the right steering knuckle (10) is adjusted to stamping by casting.
2. A maintenance-free front axle assembly as defined in claim 1, wherein: the bridge pipe weldment (4) consists of front bridge welded pipes, a bracket arm seat (14), a shock absorber lifting lug (13) and bearing seat (12), wherein the coaxiality of bearing holes at two ends of the bearing seat (12) is less than or equal to phi 0.08mm, and a tapered roller bearing (6) is adopted.
3. A maintenance-free front axle assembly as defined in claim 1, wherein: the steering knuckle vertical shaft pin (2) is made of high-quality carbon structural steel with the brand number of 45, the mechanical performance grade is not lower than 8.8, the surface roughness is not more than 3.2 mu m, and the steering knuckle vertical shaft pin is in interference fit with the left steering knuckle (3) and the right steering knuckle (10) in an assembling manner.
4. A maintenance-free front axle assembly as defined in claim 1, wherein: the left steering knuckle (3) and the right steering knuckle (10) are made of carbon structural steel with the brand number of Q235A, the perpendicularity of bearing positions is less than or equal to 0.08mm, deep groove ball bearings (20) are adopted, spacer bush (19) structures are adopted between the bearings, a brake disc (21) is arranged on the outer ring of each deep groove ball bearing (20), and the brake disc (21) is made of reinforced composite ceramic materials synthesized by carbon fibers and silicon carbide and is made of waterproof brake calipers (11).
5. A maintenance-free front axle assembly as defined in claim 2, wherein: be provided with bridge pipe (16) between bumper shock absorber lug (13) and bracket arm seat (14), bridge pipe (16) top is provided with stabilizer bar lug (15), two-way seal oil blanket (5) outer lane fixedly connected with ring flange (18), ring flange (18) outside fixedly connected with wheel bolt (17).
6. The maintenance-free front axle assembly of claim 4, wherein: the friction surface flatness of the brake disc (21) is less than or equal to 0.05mm, the friction surface runout is less than or equal to 0.10mm, the friction surface roughness is less than or equal to 3.2 mu m, and the mounting surface flatness is less than or equal to 0.05mm.
7. A maintenance-free front axle assembly as defined in claim 1, wherein: the long steering pull rod (8) and the short steering pull rod (9) are made of high-quality carbon structural steel with the mark of 20, and left-handed threads and right-handed threads are respectively machined at two ends of the long steering pull rod and the short steering pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320770839.8U CN219948306U (en) | 2023-04-10 | 2023-04-10 | Maintenance-free front axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320770839.8U CN219948306U (en) | 2023-04-10 | 2023-04-10 | Maintenance-free front axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219948306U true CN219948306U (en) | 2023-11-03 |
Family
ID=88535737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320770839.8U Active CN219948306U (en) | 2023-04-10 | 2023-04-10 | Maintenance-free front axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219948306U (en) |
-
2023
- 2023-04-10 CN CN202320770839.8U patent/CN219948306U/en active Active
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