High-integration large-load driving wheel automobile hub unit and machining method thereof

Abstract

The invention relates to the technical field of hub units, in particular to a high-integration large-load driving wheel automobile hub unit and a machining method thereof.The high-integration large-load driving wheel automobile hub unit comprises an inner ring piece and is characterized in that an outer ring piece connected with the inner ring piece in a sleeved mode is arranged at one end of the inner ring piece, a center flange plate is connected to one side of the inner ring piece, and a gear ring is installed on the center flange plate; one end of the gear ring is connected with a sensor assembly, a cavity is formed between the interior of the inner ring piece and the interior of the outer ring piece, a bearing assembly is arranged in the cavity, an upper sealing ring assembly is arranged on one side of the bearing assembly, and a lubricating assembly is installed on one side of the inner ring piece. Through cooperation of the lubricating assembly and the oil pumping assembly, lubricating oil of the replaceable oil storage soft bag can enter the space among the inner ring piece, the center flange plate and the outer ring piece through the oil injection pipe, the inner ring piece, the center flange plate and the outer ring piece are fully lubricated, and it is guaranteed that the hub unit can stably operate under the long-time large load.

Description

Technical Field

[0001] This invention relates to the field of wheel hub unit technology, and in particular to a highly integrated, high-load drive wheel automotive wheel hub unit and its processing method. Background Technology

[0002] The main function of the wheel hub unit is to bear weight and provide precise guidance for the transmission of the wheel hub. It bears both axial and longitudinal loads and is a very important component in automotive parts. The wheel hub unit includes the axle and the bearing components sleeved on the axle. Traditional wheel hub units have low integration, relatively simple functions, and poor practicality. Moreover, current wheel hub units cannot operate under heavy loads for a long time. If the internal lubricating oil is not replenished in time, it will affect the service life of the bearing components, and thus affect the service life of the entire wheel hub unit, posing certain safety hazards to the driver.

[0003] Chinese patent discloses an automotive wheel hub unit (publication number: CN205908658U) comprising a shaft core and a bearing component sleeved on the shaft core. The key features are: a flange is provided on the shaft core, and an annular groove is formed on the outer wall of the shaft core; the bearing component includes an outer ring, an inner ring, and two sets of steel balls, the centers of which are at the same horizontal position; one set of steel balls is placed between the outer and inner rings by a retainer, and the other set of steel balls is placed between the outer ring and the annular groove by a retainer, abutting against the groove wall; a limiting groove for installing the inner ring is formed on the shaft core near the input end; the inner ring… A reinforcing convex ring is provided on the outer wall that abuts against the limiting groove. An adapter ring is formed on the wall of the limiting groove to match the reinforcing convex ring. A pressing cover is provided on the inner ring. A sealing cover is provided on the input end of the outer ring. A sealing component is provided between the output end of the outer ring and the flange. However, this type of automotive wheel hub unit lacks a lubrication mechanism and cannot operate under heavy loads for a long time, which affects the service life of the entire wheel hub unit and poses certain safety hazards to the driver. In addition, the overall integration is not high and it does not have good practicality. Therefore, a highly integrated, high-load drive wheel automotive wheel hub unit and its processing method are needed. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that current wheel hub units on the market cannot operate for extended periods under heavy loads. Prolonged operation under heavy loads will affect the service life of the bearings, which in turn will affect the service life of the entire wheel hub unit, posing certain safety hazards to the driver. Therefore, this invention proposes a highly integrated, high-load drive wheel automotive wheel hub unit and its processing method.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A highly integrated, high-load drive wheel automotive wheel hub unit, comprising an inner ring component, characterized in that: one end of the inner ring component is provided with an outer ring component that fits into the inner ring component; a central flange is connected to one side of the inner ring component; a gear ring is installed on the central flange; a sensor assembly is connected to one end of the gear ring; a cavity is provided between the inner ring component and the outer ring component; a bearing assembly is provided within the cavity; an upper sealing ring assembly is provided on one side of the bearing assembly; a lubrication assembly is installed on one side of the inner ring component; an inner ring flange is installed on the inner ring component; and an outer ring flange is installed on the outer ring component.

[0006] Preferably, the lubrication assembly includes an oil injection pipe, one end of which is connected to a sealing plug, and a replaceable oil reservoir is installed inside the oil injection pipe. The use of the replaceable oil reservoir facilitates the replacement of the oiling process.

[0007] Preferably, the bearing assembly includes a cage, and the cage contains rollers that are nested and positioned within the cage. The rollers are double-row rollers, with 20 to 25 rollers in each row. The diameter of the large end of the rollers is between φ11.85 and φ11.853, and the length of the rollers is between 18.6 and 18.9 mm. By setting up the bearing assembly, the frictional force generated during equipment operation can be effectively reduced.

[0008] Preferably, the upper sealing ring assembly includes a magnetic ring, one end of which is connected to a dustproof sealing ring, and one end of which is connected to a first sealing ring skeleton. The first sealing ring skeleton facilitates the support and fixation of the dustproof sealing ring.

[0009] Preferably, one end of the retainer is connected to a lower sealing ring, and one end of the lower sealing ring is connected to a second sealing ring skeleton. The second sealing ring skeleton facilitates the support and fixation of the lower sealing ring.

[0010] Preferably, the sensor assembly includes a sensor body, a sensor connecting tube installed at one end of the sensor body, a sensor interface connected to one end of the sensor connecting tube, and an O-ring on one side of the sensor. The sensor interface facilitates the connection of supporting components.

[0011] Preferably, the inner ring is integrated on the center flange, and the raceway angle between the inner ring and the center flange is 16~18°.

[0012] Preferably, a needle roller bearing is installed at the center of the center flange, and a protective sleeve is connected to one end of the needle roller bearing. The needle roller bearing is model B-2110. The needle roller bearing includes an inner ring, a needle roller cage is installed on the inner ring, and cylindrical rollers are installed in the needle roller cage. The number of cylindrical rollers is 20 to 25. An outer ring is installed on the outside of the cylindrical rollers. The needle roller bearing has the advantages of low frictional resistance, low power consumption, high mechanical efficiency, easy starting, standardized size, easy installation and disassembly, convenient maintenance, compact structure, light weight, smaller axial dimension, high precision, high speed, low wear, and long service life. By setting the needle roller bearing, the service life of the hub unit can be effectively extended.

[0013] Preferably, the outer flange is provided with mounting holes, and a fixing bolt is provided in the mounting holes. A shock-absorbing rubber pad is installed on the fixing bolt, and a wear-resistant sleeve is installed on the outside of the shock-absorbing rubber pad. By setting the wear-resistant sleeve, the wear resistance of the fixing bolt can be effectively improved.

[0014] Preferably, before use, the coaxiality of the workpiece is measured by the equipment fixture. The equipment fixture includes a workpiece base plate, a workpiece seat is installed on the workpiece base plate, a dial indicator is installed on the workpiece seat, a riveting head is provided on one side of the top of the workpiece, and a hydraulic cylinder is connected to one end of the riveting head. The car wheel hub unit is placed on the workpiece seat. Measuring coaxiality: 1. Place the workpiece on the workpiece holder; 2. Adjust the riveting head to align with the center of the needle roller bearing, ensuring they are in contact and concentric; 3. Adjust the position of the dial indicator so that it contacts the surface of the bearing being measured. 4. Return the dial indicator reading to zero; 5. Activate the hydraulic cylinder to rotate the riveting head. The riveting head will cause the wheel hub unit to rotate around the bearing center. Observe and record the reading of the dial indicator. 2. During use, the sealing plug is installed at one end of the oil injection pipe, and the oil injection pipe is in a completely sealed state. Open the sealing plug and place the replaceable oil reservoir containing lubricating oil into the oil injection pipe. Use the matching oiling assembly to press it. The matching oiling assembly includes a push plate, one end of which is connected to a push rod. One end of the push rod is connected to a limit block. The push rod extends through the limit block to the outside and is connected to a handle. A return spring is installed on the push rod, thereby allowing the lubricating oil from the replaceable oil reservoir to enter the inner ring, center flange, and outer ring through the oil injection pipe for lubrication. This ensures that the wheel hub unit can operate stably under long-term heavy loads. The replaceable oil reservoir is a disposable product. When replacement is needed, a new replaceable oil reservoir can be directly used to replace it. 3. Connect the sensor interface to the supporting components, set the magnetic ring to rotate synchronously with the wheel, and the sensor body reads the alternating changes of the magnetic poles to calculate the real-time wheel speed and detect the driving speed in real time.

[0015] The advantages of this invention are: This application features a simple structure, high practicality, and low failure rate. By combining the lubrication and oiling components, lubricating oil from the replaceable oil reservoir can be introduced through the oil injection pipe between the inner ring, center flange, and outer ring, ensuring sufficient lubrication and guaranteeing stable operation of the wheel hub unit under long-term heavy loads. The replaceable oil reservoir is a single-use product; when replacement is needed, a new replaceable oil reservoir can be directly used. By installing a magnetic ring, sensor, lubrication component, and reinforcement component on the wheel hub unit, the high integration of this wheel hub unit is fully demonstrated. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the hub unit structure of the present invention.

[0018] Figure 2 For the present invention Figure 1 A magnified view of A in the middle.

[0019] Figure 3 For the present invention Figure 1 A magnified view of B in the middle.

[0020] Figure 4 This is a top view of the hub unit lubrication assembly and oiling assembly structure of the present invention.

[0021] Figure 5 For the present invention Figure 4 A magnified view of D.

[0022] Figure 6 This is a top view of the hub unit lubrication assembly structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the needle roller bearing structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the tooling structure of the equipment of the present invention.

[0025] In the diagram: 1. Outer ring; 2. Gear ring; 3. Upper sealing ring assembly; 4. Inner ring; 5. Needle roller bearing; 6. Protective sleeve; 7. Center flange; 8. Roller; 9. Cage; 10. O-ring; 11. Sensor body; 12. Lower sealing ring; 13. Fixing bolt; 15. Inner ring flange; 16. Outer ring flange; 17. Shock-absorbing rubber pad; 18. Wear-resistant sleeve; 19. Magnetic ring; 20. Dustproof sealing ring; 21. First sealing ring skeleton; 22. Sensor connecting pipe; 23. Sensor interface; 24. Replaceable oil reservoir; 25. Push plate; 26. Return spring; 27. Limit block; 28. Handle; 29. ​​Push rod; 30. Second sealing ring skeleton; 31. Hydraulic cylinder; 32. Riveting head; 33. Dial indicator; 34. Workpiece seat; 35. Workpiece base plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0027] Please see Figure 1-8 As shown, a highly integrated, high-load drive wheel hub unit for automobiles includes an inner ring component 4. The inner ring component 4 has an outer ring component 1 fitted at one end, a central flange 7 connected to one side of the inner ring component 4, a toothed ring 2 with 60 teeth mounted on the central flange 7, a sensor assembly connected to one end of the toothed ring 2, a cavity between the inner ring component 4 and the outer ring component 1, a bearing assembly within the cavity, an upper sealing ring assembly 3 on one side of the bearing assembly, a lubrication assembly mounted on one side of the inner ring component 4, an inner ring flange 15 mounted on the inner ring component 4, and an outer ring flange 16 mounted on the outer ring component 1. This hub unit is assembled using a riveting process, which is a highly integrated and reliable assembly process.

[0028] In this embodiment, the lubrication component includes an oil injection pipe with a sealing plug connected to one end. A replaceable oil reservoir 24 is installed inside the oil injection pipe. The replaceable oil reservoir 24 is a disposable product, which is convenient to replace and carry. It can be regularly filled with oil to maintain the wheel hub unit, thereby extending its service life. The use of the replaceable oil reservoir 24 facilitates the replacement and oiling work, making oiling more convenient and faster.

[0029] In this embodiment, the bearing assembly includes a cage 9 made of stainless steel. The cage 9 contains nested rollers 8 that are positioned within it. The rollers 8 are double-row rollers, with 20-25 rollers per row. The large-end diameter of each roller 8 is between φ11.85 and φ11.853, and the length of each roller 8 is between 18.6 and 18.9 mm. By setting up the bearing assembly, the friction generated during equipment operation can be effectively reduced, greatly increasing the rated load. Rated dynamic load: Cr = 200 KN, rated static load: Cor = 325 KN.

[0030] In this embodiment, the upper sealing ring assembly 3 includes a magnetic ring 19, which is a common product on the market and can be purchased directly. The magnetic ring 19 is set to rotate synchronously with the wheel, and the sensor body 11 reads the alternating changes of the magnetic poles to calculate the real-time wheel speed, thereby enabling real-time detection of the driving speed. One end of the magnetic ring 19 is connected to a dustproof sealing ring 20, and one end of the dustproof sealing ring 20 is connected to a first sealing ring skeleton 21. By setting the first sealing ring skeleton 21, it is easy to support and fix the dustproof sealing ring 20, making it less prone to movement and more stable.

[0031] In this embodiment, one end of the retainer 9 is connected to a lower sealing ring 12, and one end of the lower sealing ring 12 is connected to a second sealing ring skeleton 30. The second sealing ring skeleton 30 is provided to facilitate the support and fixation of the lower sealing ring 12.

[0032] In this embodiment, the sensor assembly includes a sensor body 11, which is an ABS sensor. The ABS sensor is a common product on the market and can be purchased directly. A sensor connecting pipe 22 is installed at one end of the sensor body 11, and a sensor interface 23 is connected to the other end of the sensor connecting pipe 22. An O-ring 10 is provided on one side of the sensor. The O-ring 10 is made of rubber. By setting the O-ring, the sealing performance of the wheel hub unit can be effectively improved. The sensor interface 23 facilitates the connection of supporting components.

[0033] In this embodiment, the inner ring 4 is integrated on the center flange 7, and the raceway angle between the inner ring 4 and the center flange 7 is 16~18°.

[0034] In this embodiment, a needle roller bearing 5 is installed at the center of the central flange 7. A protective sleeve 6 is connected to one end of the needle roller bearing 5. The needle roller bearing 5 is model B-2110, a common product on the market that can be purchased directly. The needle roller bearing 5 includes an inner ring, on which a needle roller cage 9 is installed. Cylindrical rollers 8 are installed inside the needle roller cage 9. The cylindrical rollers 8 and the needle roller cage 9 are nested and mutually restrictive. The number of cylindrical rollers 8 is 20 to 25. An outer ring is installed on the outside of the cylindrical rollers 8. The needle roller bearing 5 has the advantages of low frictional resistance, low power consumption, high mechanical efficiency, easy starting, standardized size, easy installation and disassembly, convenient maintenance, compact structure, light weight, smaller axial dimension, high precision, high speed, low wear, and long service life. By setting the needle roller bearing 5, the service life of the hub unit can be effectively extended.

[0035] In this embodiment, the outer flange 16 is provided with mounting holes, and eight fixing bolts 13 are provided in the mounting holes. Shock-absorbing rubber pads 17 are installed on the fixing bolts 13. The shock-absorbing rubber pads 17 are common products on the market and can be purchased directly. Wear-resistant sleeves 18 are installed on the outside of the shock-absorbing rubber pads 17. By setting the wear-resistant sleeves 18, the wear resistance of the fixing bolts 13 can be effectively improved.

[0036] In this embodiment, before use, the coaxiality of the workpiece is measured by the equipment fixture. The equipment fixture includes a workpiece base plate 35, a workpiece seat 34 is installed on the workpiece base plate 35, a dial indicator 33 is installed on the workpiece seat 34, and a riveting head 32 is provided on one side of the top of the workpiece. One end of the riveting head 32 is connected to a hydraulic cylinder 31, and the car wheel hub unit is placed on the workpiece seat 34. Measuring coaxiality: 1. Place the workpiece on the workpiece holder 34; 2. Adjust the riveting head 32 to align with the center of the needle roller bearing 5, ensuring they are in contact and concentric; 3. Adjust the position of dial indicator 33 so that it contacts the surface of the bearing being measured. 4. Return the dial indicator reading to 0; 5. Open the hydraulic cylinder 31 to drive the riveting head 32 to rotate. The riveting head 32 drives the wheel hub unit to rotate around the bearing center. Observe and record the reading of the dial indicator 33. 2. In use, the sealing plug is installed at one end of the oil injection pipe, and the oil injection pipe is in a completely sealed state. Open the sealing plug and place the replaceable oil reservoir 24 containing lubricating oil into the oil injection pipe. Use the matching oiling assembly to press it. The matching oiling assembly includes a push plate 25. One end of the push plate 25 is connected to a push rod 29. One end of the push rod 29 is connected to a limit block 27. The push rod 29 extends through the limit block 27 to the outside and is connected to a handle 28. A return spring 26 is installed on the push rod 29, so that the lubricating oil of the replaceable oil reservoir 24 enters the inner ring 4, the center flange 7 and the outer ring 1 through the oil injection pipe for lubrication. This ensures that the wheel hub unit can operate stably under long-term heavy load. The replaceable oil reservoir 24 is a disposable product. When it needs to be replaced, a new replaceable oil reservoir 24 can be directly used to replace it. 3. Connect the sensor interface 23 to the supporting components, set the magnetic ring 19 to rotate synchronously with the wheel, and the sensor body 11 reads the alternating changes of the magnetic poles to calculate the real-time wheel speed and detect the driving speed in real time.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A high-integrated heavy-load driving wheel vehicle hub unit comprising an inner ring member (4), characterized in that: One end of the inner ring (4) is provided with an outer ring (1) that fits into the inner ring (4). A central flange (7) is connected to one side of the inner ring (4). A gear ring (2) is installed on the central flange (7). A sensor assembly is connected to one end of the gear ring (2). A cavity is provided between the inner ring (4) and the outer ring (1). A bearing assembly is provided in the cavity. An upper sealing ring assembly (3) is provided on one side of the bearing assembly. A lubrication assembly is installed on one side of the inner ring (4). An inner ring flange (15) is installed on the inner ring (4). An outer ring flange (16) is installed on the outer ring (1).

2. The high-integration large-load driving wheel automobile hub unit according to claim 1, characterized by: The lubrication assembly includes an oil injection pipe with a sealing plug connected to one end, and a replaceable oil reservoir (24) installed inside the oil injection pipe.

3. A high-integration large-load driving wheel automobile hub unit according to claim 2, characterized by: The bearing assembly includes a cage (9), and the cage (9) is provided with rollers (8) that are nested and positioned within the cage (9). The rollers (8) are double-row rollers (8), with 20 to 25 rollers in each row. The diameter of the large end of the rollers (8) is between φ11.85 and φ11.853, and the length of the rollers (8) is between 18.6 and 18.

9.

4. The highly integrated, high-load-bearing drive wheel automotive wheel hub unit according to claim 1, characterized in that: The upper sealing ring assembly (3) includes a magnetic ring (19), one end of which is connected to a dustproof sealing ring (20), and the other end of which is connected to a first sealing ring skeleton (21).

5. The highly integrated, high-load-bearing drive wheel automotive wheel hub unit according to claim 3, characterized in that: One end of the retainer (9) is connected to a lower sealing ring (12), and one end of the lower sealing ring (12) is connected to a second sealing ring skeleton (30).

6. The highly integrated, high-load-bearing drive wheel automotive wheel hub unit according to claim 1, characterized in that: The sensor assembly includes a sensor body (11), a sensor connecting pipe (22) is installed at one end of the sensor body (11), a sensor interface (23) is connected to one end of the sensor connecting pipe (22), and an O-ring (10) is provided on one side of the sensor.

7. The highly integrated, high-load drive wheel hub unit for automobiles according to claim 1, characterized in that: The inner ring (4) is integrated on the center flange (7), and the raceway angle between the inner ring (4) and the center flange (7) is 16~18°.

8. The highly integrated, high-load drive wheel hub unit for automobiles according to claim 1, characterized in that: A needle roller bearing (5) is installed in the center of the center flange (7). A protective sleeve (6) is connected to one end of the needle roller bearing (5). The needle roller bearing (5) includes an inner ring. A needle roller cage (9) is installed on the inner ring. Cylindrical rollers (8) are installed inside the needle roller cage (9). The number of cylindrical rollers (8) is 20 to 25. An outer ring is installed on the outside of the cylindrical rollers (8).

9. A highly integrated, high-load-bearing drive wheel automotive hub unit according to claim 1, characterized in that: The outer flange (16) is provided with mounting holes, and a fixing bolt (13) is provided in the mounting holes. A shock-absorbing rubber pad (17) is installed on the fixing bolt (13), and a wear-resistant sleeve (18) is installed on the outside of the shock-absorbing rubber pad (17).

10. A method for processing a highly integrated, high-load-bearing drive wheel automotive wheel hub unit as described in claim 1, characterized in that: Before use, the coaxiality of the workpiece is measured by the equipment fixture. The equipment fixture includes a workpiece base plate (35), a workpiece seat (34) is installed on the workpiece base plate (35), a dial indicator (33) is installed on the workpiece seat (34), a riveting head (32) is provided on one side of the top of the workpiece, and a hydraulic cylinder (31) is connected to one end of the riveting head (32). The car wheel hub unit is placed on the workpiece seat (34). Measuring coaxiality:

1. Place the workpiece on the workpiece holder (34); 2. Adjust the riveting head (32) to align with the center of the needle roller bearing (5) so that they are in contact and concentric; 3. Adjust the position of the dial indicator (33) so that it contacts the surface of the bearing being measured.

4. Return the reading of the dial indicator (33) to 0; 5. Turn on the oil cylinder (31) to drive the riveting head (32) to rotate. The riveting head (32) drives the hub unit to rotate along the bearing center. Observe and record the reading of the dial indicator (33).

2. When in use, the sealing plug is installed at one end of the oil injection pipe, and the oil injection pipe is in a completely sealed state. Open the sealing plug, place the replaceable oil reservoir (24) containing lubricating oil into the oil injection pipe, and press it with the matching oiling assembly. The matching oiling assembly includes a push plate (25), one end of which is connected to a push rod (29), and one end of the push rod (29) is connected to a limit block (27). The push rod (29) extends through the limit block (27) to the outside and is connected to a handle (28). A return spring (26) is installed on the push rod (29), so that the lubricating oil in the replaceable oil reservoir (24) enters the inner ring (4), the central flange (7) and the outer ring (1) through the oil injection pipe for lubrication.

3. Connect the sensor interface (23) to the supporting components, set the magnetic ring (19) to rotate synchronously with the wheel, and the sensor body (11) reads the alternating changes of the magnetic poles to calculate the real-time wheel speed and detect the driving speed in real time.

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