High-strength anti-vibration truck hub bearing and production process thereof

Abstract

The application discloses a high-strength anti-vibration truck hub bearing and relates to the bearing field.The hub is internally provided with an inner ring at both ends;the inner side of the inner ring is provided with an intermediate frame;the inner side of the intermediate frame is provided with a fixing sleeve;the inner side of the fixing sleeve is provided with a positioning sleeve;a plurality of roller grooves are uniformly formed in the intermediate frame;and a roller is rollingly connected in the inner part of each roller groove.When the hub is reversed in the forward gear, that is, when the truck is sliding on a slope, the straight surfaces of the top block and the bottom block are mutually clamped to block the hub from being reversed, thereby preventing the truck from sliding on the slope.When the truck is reversed, the driving mechanism of the rotating ring is linked with the gear operation, and the low gear is scraped, so that the driving mechanism drives the rotating ring to rotate, the rotating ring drives the bottom block to retract downward by means of the guide groove and the guide column, the bottom block is not in contact with the top block, and normal reversing operation is ensured.When the low forward gear is scraped, the rotating ring drives the bottom block to move upward.

Description

Technical Field

[0001] This invention relates to the field of bearings, specifically to a high-strength, shock-resistant truck wheel hub bearing and its manufacturing process. Background Technology

[0002] Truck wheel hub bearings are one of the key components of a car chassis (suspension area). Their main function is to bear weight and provide precise guidance for the rotation of the wheel end. They must bear not only axial loads but also radial loads. Through continuous improvement and development, truck wheel hub bearings have been industrialized and the products are becoming increasingly mature.

[0003] Truck wheel hub bearings are made of high-quality alloy steel or special engineering materials. These materials have excellent mechanical properties and wear resistance, and can withstand large loads and impacts. By precisely controlling the heat treatment process, the bearing materials achieve an ideal microstructure, improving their hardness and toughness, and further enhancing their shock resistance.

[0004] The bearing rotates along with the wheel hub. When the truck moves forward, the wheel hub drives the bearing to rotate forward; when the truck moves backward, the wheel hub drives the bearing to rotate backward. In practical applications, when a truck starts moving forward on a slope, it may slip slightly. When it slips, the wheel hub bearing rotates backward, requiring the driver to immediately control the throttle to move forward. If the driver reacts slowly, it may collide with the vehicle behind, causing a traffic accident. If a wheel hub bearing that can help prevent trucks from slipping on slopes could be provided, the occurrence of such traffic accidents would be reduced. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a high-strength, shock-resistant truck wheel hub bearing and its manufacturing process to solve the technical problem of trucks slipping on slopes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-strength, shock-resistant truck wheel hub bearing, comprising a wheel hub, with inner rings integrally formed at both ends of the inner side of the wheel hub, an intermediate frame provided on the inner side of the inner ring, a fixing sleeve provided on the inner side of the intermediate frame, and a positioning sleeve provided on the inner side of the fixing sleeve. The intermediate frame has a plurality of roller grooves evenly spaced, and a roller is tumblingly connected inside each roller groove. A first retaining groove is formed on the outer side of the intermediate frame between adjacent roller grooves. A first retaining block is provided on the inner side of the inner ring to mate with the first retaining groove. An expansion groove is formed on the inner side of the intermediate frame between adjacent roller grooves. The telescopic groove is internally connected to a top block. The intermediate frame has a telescopic hole. The top of the top block is fixed with a telescopic shaft extending into the telescopic hole. A first spring is sleeved on the outside of the telescopic shaft. The middle of the fixed sleeve is provided with a rotating groove, and the fixed sleeve is movably connected to a rotating ring through the rotating groove. Several bottom blocks corresponding to the top block are sleeved on the rotating ring. The middle of the bottom block has a hollow structure and is provided with a guide post. The rotating ring is provided with an arc-shaped guide groove that cooperates with the guide post. The fixed sleeve is also provided with a movable groove for the bottom blocks to move. A drive mechanism for driving the rotating ring to rotate is provided between the fixed sleeve and the rotating ring.

[0007] By adopting the above technical solution, when the wheel hub is in forward gear and reverses, i.e. when it is rolling downhill, the straight surfaces of the top block and the bottom block will lock each other, preventing the wheel hub from rolling downhill and thus preventing it from rolling downhill.

[0008] The invention is further configured such that an oil storage block is inserted into the lower end of the bottom block inside the movable groove, an oil passage is opened through the bottom block, a one-way valve is installed at the end of the oil passage near the oil storage block, and a lubrication layer is connected to the outer side of the second inclined surface.

[0009] By adopting the above technical solution, when the bottom block is squeezed and reset each time, it will squeeze the oil storage block at the bottom. The oil in the oil storage block will reach the top of the bottom block through the oil channel. Then, during the rotation process, the lubricating layer will apply the lubricating oil to the roller, thereby playing a self-lubricating role.

[0010] The present invention is further configured such that both the oil storage block and the lubrication layer are made of sponge.

[0011] By adopting the above technical solution, the sponge can absorb lubricating oil and can seep out when squeezed.

[0012] The present invention is further configured such that the inner side of the fixing sleeve is provided with a plurality of second slots, and the outer side of the positioning sleeve is provided with a second block that cooperates with the second slots.

[0013] By adopting the above technical solution, it is ensured that there will be no rotation between the fixed sleeve and the positioning sleeve.

[0014] The present invention is further configured such that the inner side of the inner ring is provided with a roller groove that cooperates with the roller.

[0015] By adopting the above technical solution, it is easier to coordinate the inner ring with the intermediate frame.

[0016] The present invention is further configured such that the lower ends of the top block have a first inclined surface and a first straight surface, respectively, and the upper ends of the bottom block have a second inclined surface and a second straight surface, respectively, with the first straight surface and the second straight surface abutting against each other.

[0017] By adopting the above technical solution, when the wheel hub moves forward and rotates, the inclined surfaces contact each other, which facilitates the top block to be squeezed and compressed back. When the wheel rolls backward, the straight surfaces lock together to prevent the wheel hub from rotating backward.

[0018] The present invention is further configured such that the guide post and the bottom block are movably connected, and a second spring is provided at the connection point.

[0019] By adopting the above technical solution, when applying lubricating oil to the roller through the lubrication layer, the bottom block can retract after being squeezed, reducing friction with the roller.

[0020] The present invention is further configured such that the driving mechanism includes several sets of push blocks, fixed blocks and cylinders, and push blocks are fixed on the outer side of the rotating ring between the bottom blocks. Several fixed blocks corresponding to the push blocks are fixed on the fixed sleeve, and a cylinder is installed between the push blocks and the fixed blocks.

[0021] By adopting the above technical solution, multiple sets of cylinders are used to drive the rotating ring to rotate.

[0022] This invention also provides a manufacturing process for high-strength, shock-resistant truck wheel hub bearings, comprising the following steps:

[0023] S1. Preparation of various components: Molds for preparing various components such as inner ring, intermediate frame, fixed sleeve, positioning sleeve, rotating ring, top block, bottom block and roller are prepared from blanks, and related components are prepared from each mold. The inner ring, intermediate frame, fixed sleeve, positioning sleeve, rotating ring, top block, bottom block and roller are made of high-quality alloy steel. The fixed sleeve is a two-half structure assembled, and one half of the structure is composed of multiple petal structures. The bottom block is a two-half assembled structure. The heat treatment process is precisely controlled.

[0024] S2. Processing of each component: A second slot is made on the inner side of the fixed sleeve using a drilling and milling machine. A rotating slot and a movable slot are made in the middle of the fixed sleeve. A roller slot, a telescopic slot and a first slot are made on the intermediate frame. A telescopic hole is drilled on the intermediate frame. A roller groove is made on the inner side of the inner ring. A guide groove is made on the rotating ring. An oil passage is made in the bottom block.

[0025] S3. Component Assembly: Using the components obtained in step S2, assemble the main structure. A set of positioning sleeves is first connected to the truck body structure. Then, half of the fixing sleeve is fitted onto its outer side, allowing the second locking block to engage in the second locking groove. Next, the two halves of the bottom block are fitted onto the corresponding positions of the rotating ring, and the two halves of the bottom block are connected with screws. Components such as cylinders are installed on the outside of the rotating ring. The control lines of the cylinders are guided through the holes in the fixing sleeves to the inside of the vehicle body. Then, the guide post is inserted from the side of the bottom block through the holes and passes through the guide groove. The rotating ring, bottom block, and storage are then assembled. The oil block is aligned with the rotating and movable grooves of the other half of the fixed sleeve, and the two halves of the fixed sleeve are joined together and connected through the screw holes. Then, the top block, telescopic shaft, and first spring are assembled into the corresponding telescopic grooves and telescopic holes of the intermediate frame. The roller is installed into the roller groove, and then the outer side of the fixed sleeve is fitted into the intermediate frame. Then, an inner ring is fitted on the outer side of the intermediate frame so that the first locking block and the second locking block are engaged. At this point, the side of the wheel hub closest to the vehicle body is installed. The other side of the wheel hub is installed in the reverse manner with the same structure. The fixed sleeve is held in place by the nuts of the vehicle body structure to complete the installation.

[0026] The present invention is further configured such that the drilling and milling machine tool in step S2 is a radial drilling machine of model Z3025×10.

[0027] In summary, the present invention has the following main beneficial effects:

[0028] 1. The truck wheel hub bearing of the present invention is mainly composed of a wheel hub, an intermediate frame, a fixed sleeve, and a rotating ring. Several bottom blocks are arranged inside the intermediate frame, and several bottom blocks are arranged on the rotating ring. When the wheel hub rotates forward at low speed, the inclined surface of the top block and the inclined surface of the bottom block are pressed together, and the top block is squeezed upward and compressed in, which does not affect the rotation. When the wheel hub rotates forward at high speed, the top block will retract under the action of centrifugal force, and the top block and the bottom block will not make contact or collision, ensuring that there is no friction when rotating at high speed. When the wheel hub reverses in the forward gear, that is, when it rolls downhill, the straight surfaces of the top block and the bottom block will lock each other, preventing the wheel hub from reversing, thereby preventing it from rolling downhill. When reversing, the drive mechanism of the rotating ring is linked with the gear operation. When the reverse gear is engaged, the drive mechanism will drive the rotating ring to rotate. The rotating ring uses the guide groove and guide post to drive the bottom block to retract downward, and the bottom block and the top block will not contact each other, ensuring normal reversing operation. When the forward low gear is engaged, the rotating ring will drive the bottom block to push upward.

[0029] 2. The present invention also includes a self-lubricating structure that works in conjunction with the above structure. Each time the bottom block is pressed and reset, it will press against the oil storage block at its bottom. The oil in the oil storage block will reach the top of the bottom block through the oil channel. Then, during the rotation, the lubricating layer will apply the lubricating oil to the roller, thereby playing a self-lubricating role. When the set speed is reached, the rotating ring can also be controlled to drive the bottom block to retract, so as to avoid friction between the lubricating layer and the roller during high-speed rotation. Attached Figure Description

[0030] Figure 1 This is an exploded view of the present invention;

[0031] Figure 2 This is an assembly diagram of the present invention;

[0032] Figure 3 For the present invention Figure 2 A sectional view;

[0033] Figure 4 This is an assembly and mating diagram of the fixing sleeve and the positioning sleeve of the present invention;

[0034] Figure 5 This is an assembly diagram of the intermediate frame and the fixed sleeve of the present invention;

[0035] Figure 6 This is a diagram showing the assembly and mating of the inner ring and the intermediate frame of the present invention;

[0036] Figure 7 This is an assembly and fitting diagram of the fixing sleeve and rotating ring of the present invention;

[0037] Figure 8 This is a diagram showing the assembly of the intermediate frame, rotating ring, and fixed sleeve of the present invention.

[0038] Figure 9 This is a diagram showing the fit between the intermediate frame and the fixing sleeve of the present invention;

[0039] Figure 10 For the present invention Figure 9 Enlarged view of the structure of section A in the middle;

[0040] Figure 11 This is a diagram showing the mating of the rotating ring and the base block in this invention.

[0041] Figure 12 This is a partial structural diagram of the fixed sleeve and rotating ring of the present invention;

[0042] Figure 13 This is a partial structural schematic diagram of the rotating ring of the present invention;

[0043] Figure 14 This is a schematic diagram of the structure of the top block and the bottom block of the present invention;

[0044] Figure 15 This is a schematic diagram of the oil passage structure inside the bottom block of the present invention.

[0045] In the diagram: 1. Hub; 2. Inner ring; 3. Intermediate frame; 4. Fixed sleeve; 5. Positioning sleeve; 6. First locking block; 7. Roller groove; 8. Second locking groove; 9. Second locking block; 10. First locking groove; 11. Roller; 12. Telescopic groove; 13. Top block; 14. Telescopic shaft; 15. First spring; 16. First inclined surface; 17. First straight surface; 18. Rotating groove; 19. Rotating ring; 20. Bottom block; 21. Guide groove; 22. Guide post; 23. Second spring; 24. Second straight surface; 25. Second inclined surface; 26. Lubricating layer; 27. Movable groove; 28. Oil passage; 29. ​​One-way valve; 30. Oil reservoir block; 31. Push block; 32. Fixed block; 33. Cylinder; 34. Telescopic hole; 35. Roller groove. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0047] The embodiments of the present invention will now be described.

[0048] A high-strength, shock-resistant truck wheel hub bearing, such as Figure 1-15 As shown: The wheel includes a hub 1. Inner rings 2 are integrally formed at both ends of the inner side of the hub 1. An intermediate frame 3 is provided inside the inner ring 2. A fixing sleeve 4 is provided inside the intermediate frame 3. A positioning sleeve 5 is provided inside the fixing sleeve 4. Several second slots 8 are provided inside the fixing sleeve 4. Second blocks 9 are provided outside the positioning sleeve 5. The second blocks 9 engage with the second slots 8. The fixing sleeve 4 and the positioning sleeve 5 are assembled in this way, preventing rotation between them. Several roller grooves 7 are evenly distributed on the intermediate frame 3, and each roller groove 7... The inner ring 2 has a roller 11 for internal rolling connection. The inner side of the inner ring 2 is provided with a roller groove 35 that cooperates with the roller 11. The outer side of the intermediate frame 3 is provided with a first slot 10 between adjacent roller grooves 7. The inner side of the inner ring 2 is provided with a first locking block 6. The first locking block 6 is locked into the first slot 10. The inner ring 2 and the intermediate frame 3 will not rotate. The positioning sleeve 5 is connected to the body structure of the truck. The fixing sleeve 4 is tightened by an external nut to prevent it from falling off. When the wheel hub 1 rotates, it will drive the intermediate frame 3 to rotate through the inner ring 2. The roller 11 is used to reduce friction during rotation.

[0049] Based on the above structure, telescopic grooves 12 are provided on the inner side of the intermediate frame 3 between adjacent roller grooves 7. Top blocks 13 are movably connected inside the telescopic grooves 12. Telescopic holes 34 are provided on the intermediate frame 3. A telescopic shaft 14 extending into the telescopic hole 34 is fixed at the top of the top block 13. A first spring 15 is sleeved on the outer side of the telescopic shaft 14. A rotating groove 18 is provided in the middle of the fixed sleeve 4, and a rotating ring 19 is movably connected to the fixed sleeve 4 through the rotating groove 18. Several bottom blocks corresponding to the top blocks 13 are sleeved on the rotating ring 19. Block 20 has a hollow structure in the middle and is provided with a guide post 22. The rotating ring 19 is provided with an arc-shaped guide groove 21 that cooperates with the guide post 22. The fixed sleeve 4 is also provided with a movable groove 27 for the bottom block 20 to move. The lower end of the top block 13 has a first inclined surface 16 and a first straight surface 17 on both sides. The upper end of the bottom block 20 has a second inclined surface 25 and a second straight surface 24 on both sides. The first straight surface 17 and the second straight surface 24 are close to each other. A drive mechanism for driving the rotating ring 19 to rotate is provided between the fixed sleeve 4 and the rotating ring 19.

[0050] The drive mechanism is linked to the truck's gear control system. When the truck moves forward at low speed, the wheel hub 1 rotates forward at low speed. The wheel hub 1 drives the intermediate frame 3 to rotate forward at low speed through the inner ring 2. The intermediate frame 3 drives several top blocks 13 to rotate. When rotating, the top blocks 13 will contact the bottom block 20. The second inclined surface 25 of the bottom block 20 presses the first inclined surface 16 of the top block 13. Thus, guided by the force of the inclined surface, the top block 13 will be pushed upward and retracted into the telescopic groove 12. The telescopic shaft 14 retracts into the telescopic hole 34 and presses the first spring 15, so that the top block 13 can pass through the bottom block 20. After the top block 13 passes, the first spring 15 resets and pushes the top block 13 out again. This process is repeated to ensure normal rotation. Since it is in a low-speed state, the contact frequency between the top block 13 and the bottom block 20 is low and the force is slow, so the friction is low and does not affect normal rotation.

[0051] When the truck moves forward at high speed, the wheel hub rotates in the forward direction at high speed. The top block 13 will completely retract into the telescopic groove 12 under the action of centrifugal force. At this time, there will be no contact or collision between the top block 13 and the bottom block 20, ensuring that there will be no friction when rotating at high speed.

[0052] When the truck rolls backward in forward gear, the wheel hub 1 drives the intermediate frame 3 to rotate in reverse through the inner ring 2. The first straight surface 17 of the top block 13 and the second straight surface 24 of the bottom block 20 will lock each other, and the top block 13 will not retract upward, thus preventing the wheel hub from rotating in reverse and thus preventing it from rolling backward.

[0053] When the truck reverses, the drive mechanism of the rotating ring 19 is linked to the gear operation. When reverse gear is engaged, the drive mechanism simultaneously drives the rotating ring 19 to rotate in reverse. The rotating ring 19 uses the arc-shaped guide groove 21 and guide post 22 to guide the bottom block 20 to retract downward into the movable groove 27. The bottom block 20 and the top block 13 will not come into contact, and the intermediate frame 3 can rotate in reverse, ensuring that the wheel hub 1 can rotate normally, thus ensuring normal reversing operation. When forward gear is engaged, the drive mechanism drives the rotating ring 19 to rotate forward, and uses the guide groove 21 and guide post 22 to push the bottom block 20 upward.

[0054] When the bottom block 20 retracts into the movable groove 27 by the drive of the rotating ring 19, its end remains flat with the outer side of the fixed sleeve 4.

[0055] This invention also includes a lubrication mechanism. Specifically, an oil storage block 30 is inserted into the lower end of the bottom block 20 inside the movable groove 27. An oil passage 28 is formed through the interior of the bottom block 20. A one-way valve 29 is installed at one end of the oil passage 28 near the oil storage block 30. A lubrication layer 26 is connected to the outer side of the second inclined surface 25. Both the oil storage block 30 and the lubrication layer 26 are made of sponge. The oil storage block 30 absorbs lubricating oil. Each time the bottom block 20 retracts, it squeezes the oil storage block 30. The lubricating oil in the oil storage block 30 is squeezed out and then squeezed into the oil passage 28 through the one-way valve 29. Here, the one-way valve 29 can only allow oil to enter the oil passage 28. The lubricating oil will be absorbed into the lubrication layer along the oil passage 28. At the low-speed forward position, the roller 11 will contact the lubricating layer 26, thereby applying lubricant to the roller 11 and playing a self-lubricating role. The guide post 22 and the bottom block 20 are movably connected, and a second spring 23 is provided at the connection. When the lubricating layer 26 is squeezed by the roller 11, the bottom block 20 will retract a little by utilizing the movable gap between it and the guide post 22 to ensure that the roller 11 passes normally. At the high-speed position, the drive mechanism drives the rotating ring 19 to reverse, retracting the bottom block 20, and the lubricating layer 26 will no longer contact the roller 11, preventing friction between the roller 11 and the lubricating layer 26 at high speed. Lubricating oil can be replenished to the oil storage block 30 by needle injection.

[0056] The drive mechanism includes several sets of push blocks 31, fixed blocks 32 and cylinders 33. Push blocks 31 are fixed on the outer side of the rotating ring 19 between the bottom blocks 20. Several fixed blocks 32 corresponding to the push blocks 31 are fixed on the fixed sleeve 4. Cylinders 33 are installed between the push blocks 31 and the fixed blocks 32. The rotating ring 19 can be driven to rotate in both directions by the extension and retraction of the output shaft of the cylinder 33.

[0057] It should be noted that the linkage between the drive mechanism and the gear control system is as follows: for example, if the high-speed forward gear is set to second gear, sensors can be installed at the reverse, forward, and second gear positions. When the sensor detects the gear position, it will send a signal to the drive mechanism's control system, which will then control the drive mechanism to move synchronously.

[0058] A manufacturing process for high-strength, shock-resistant truck wheel hub bearings includes the following steps:

[0059] S1. Preparation of each component: Molds for preparing each component, such as inner ring 2, intermediate frame 3, fixed sleeve 4, positioning sleeve 5, rotating ring 19, top block 13, bottom block 20, and roller 11, are prepared from blanks. The relevant components are prepared using each mold. The inner ring 2, intermediate frame 3, fixed sleeve 4, positioning sleeve 5, rotating ring 19, top block 13, bottom block 20, and roller 11 are made of high-quality alloy steel. The fixed sleeve 4 is a two-half structure, and one half of the structure is composed of multiple petal structures. The bottom block 20 is a two-half assembled structure. The heat treatment process is precisely controlled.

[0060] S2. Processing of each component: A second slot 8 is opened on the inner side of the fixed sleeve 4 using a drilling and milling machine. A rotating slot 18 and a movable slot 27 are opened in the middle of the fixed sleeve 4. A roller slot 7, a telescopic slot 12 and a first slot 10 are opened on the intermediate frame 3. A telescopic hole 34 is drilled on the intermediate frame 3. A roller groove 35 is opened on the inner side of the inner ring 2. A guide groove 21 is opened on the rotating ring 19. An oil passage 28 is opened in the bottom block 20.

[0061] S3. Component Assembly: Using the components obtained in step S2, assemble the main structure. A set of positioning sleeves 5 are first connected to the truck body structure. Then, half of the fixing sleeve 4 is fitted onto its outer side, so that the second locking block 9 is engaged in the second locking groove 8. Then, the two halves of the bottom block 20 are fitted onto the corresponding positions of the rotating ring 19, and the two halves of the bottom block 20 are connected by screws. Components such as the cylinder 33 are installed on the outside of the rotating ring 19. The control pipeline of the cylinder 33 is guided to the inside of the vehicle body through the hole of the fixing sleeve 4. Then, the guide post 22 is inserted from the side of the bottom block 20 through the hole and passes through the guide groove 21. The rotating ring 19, the bottom block 20, and the oil storage block are then assembled. Align the 30 with the rotating groove 18 and movable groove 27 of the other half of the fixed sleeve 4, and connect the two halves of the fixed sleeve 4 by screw holes. Then, assemble the top block 13, telescopic shaft 14 and the first spring 15 into the corresponding telescopic groove 12 and telescopic hole 34 of the intermediate frame 3. Install the roller 11 into the roller groove 7. Then, fit the outer side of the fixed sleeve 4 into the intermediate frame 3. Then, fit the inner ring 2 on the outer side of the intermediate frame 3 so that the first locking block 6 and the second locking block 9 engage. At this point, the side of the wheel hub 1 closest to the vehicle body is installed. The other side of the wheel hub 1 is installed in the reverse manner with the same structure. Use the nuts of the vehicle body structure to hold the fixed sleeve 4 in place to complete the installation.

[0062] The drilling and milling machine used in step S2 is a radial drilling machine of model Z3025×10.

[0063] The main components, such as the inner ring 2, intermediate frame 3, fixed sleeve 4, positioning sleeve 5, and rotating ring 19, are made of high-quality alloy steel or special engineering materials. These materials have excellent mechanical properties and wear resistance, and can withstand large loads and impacts. By precisely controlling the heat treatment process, the main structure achieves an ideal microstructure, improving its hardness and toughness, and further enhancing its seismic performance.

[0064] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A high-strength, shock-resistant truck hub bearing comprising a hub (1), characterized in that: The inner ring (2) is integrally arranged at the inner side of the hub (1), the inner side of the inner ring (2) is provided with an intermediate frame (3), the inner side of the intermediate frame (3) is provided with a fixed sleeve (4), the inner side of the fixed sleeve (4) is provided with a positioning sleeve (5), a plurality of roller grooves (7) are uniformly arranged on the intermediate frame (3), and a roller (11) is rotatably connected in each roller groove (7), a first clamping groove (10) is arranged between adjacent roller grooves (7) on the outer side of the intermediate frame (3), the inner side of the inner ring (2) is provided with a first clamping block (6) matched with the first clamping groove (10), a telescopic groove (12) is arranged between adjacent roller grooves (7) on the inner side of the intermediate frame (3), a top block (13) is movably connected in the telescopic groove (12), a telescopic hole (34) is arranged on the intermediate frame (3), a telescopic shaft (14) extending into the telescopic hole (34) is fixed at the top end of the top block (13), a first spring (15) is sleeved on the outer side of the telescopic shaft (14), a rotating groove (18) is arranged in the middle of the fixed sleeve (4), and the fixed sleeve (4) is movably connected with a rotating ring (19) through the rotating groove (18), a plurality of bottom blocks (20) corresponding to the top block (13) are sleeved on the rotating ring (19), the middle part of the bottom block (20) is a hollow structure and is provided with a guide column (22), the rotating ring (19) is provided with an arc-shaped guide groove (21) matched with the guide column (22), the fixed sleeve (4) is further provided with a movable groove (27) for the movable bottom block (20), and a driving mechanism for driving the rotating ring (19) to rotate is arranged between the fixed sleeve (4) and the rotating ring (19). The lower end of the top block (13) is provided with a first inclined surface (16) and a first straight surface (17), the upper end of the bottom block (20) is provided with a second inclined surface (25) and a second straight surface (24), and the first straight surface (17) is located opposite to the second straight surface (24).

2. A high-strength jounce truck hub bearing according to claim 1, characterized in that: The lower end of the bottom block (20) is further clamped with an oil storage block (30) in the movable groove (27), an oil channel (28) is arranged in the bottom block (20), a one-way valve (29) is arranged at the end of the oil channel (28) close to the oil storage block (30), and a lubricating layer (26) is further arranged on the outer side of the second inclined surface (25).

3. A high-strength jounce truck hub bearing according to claim 2, characterized in that: The material of the oil storage block (30) and the lubricating layer (26) is sponge.

4. A high-strength jounce truck hub bearing according to claim 1, characterized in that: The inner side of the fixed sleeve (4) is provided with a plurality of second clamping grooves (8), and the outer side of the positioning sleeve (5) is provided with a second clamping block (9) matched with the second clamping groove (8).

5. A high-strength jounce truck hub bearing according to claim 1, characterized in that: The inner side of the inner ring (2) is provided with a rolling groove (35) matched with the roller (11).

6. A high strength jounce truck hub bearing according to claim 1, characterized in that: The guide column (22) and the bottom block (20) are movably connected, and a second spring (23) is arranged at the connection position. The material of the oil storage block (30) and the lubricating layer (26) is sponge.

7. A high-strength jounce truck hub bearing according to claim 1, characterized in that: The driving mechanism comprises several groups of push blocks (31), fixed blocks (32) and air cylinders (33), the outer side of the rotating ring (19) is fixed with the push blocks (31) between the bottom blocks (20), the fixed sleeve (4) is fixed with several fixed blocks (32) corresponding to the push blocks (31), and the air cylinders (33) are installed between the push blocks (31) and the fixed blocks (32).

8. A production process of a high-strength shock-resistant truck hub bearing, applied to the high-strength shock-resistant truck hub bearing according to any one of claims 1-7, characterized in that: The method comprises the following steps: S1, preparing each component: preparing the molds of the inner ring (2), the middle frame (3), the fixed sleeve (4), the positioning sleeve (5), the rotating ring (19), the top block (13), the bottom block (20) and the roller shaft (11) through the embryo material, and preparing the related components through the molds, and the inner ring (2), the middle frame (3), the fixed sleeve (4), the positioning sleeve (5), the rotating ring (19), the top block (13), the bottom block (20) and the roller shaft (11) are made of high-quality alloy steel, wherein the fixed sleeve (4) is a two-half structure assembled, one half of which is assembled by a multi-lobe structure, the bottom block (20) is a two-half structure assembled, and the heat treatment process is accurately controlled; S2, processing each component: a second clamping groove (8) is formed in the inner side of the fixed sleeve (4), a rotating groove (18) and a movable groove (27) are formed in the middle of the fixed sleeve (4), a roller shaft groove (7), an expansion groove (12) and a first clamping groove (10) are formed on the middle frame (3), an expansion hole (34) is drilled on the middle frame (3), a rolling groove (35) is formed in the inner side of the inner ring (2), a guide groove (21) is formed on the rotating ring (19), and an oil channel (28) is formed in the bottom block (20); S3, assembly: the main body structure of each component prepared in step S2 is assembled, a set of positioning sleeves (5) is first connected with the truck body structure, then a half of the fixing sleeve (4) is sleeved on the outer side of the positioning sleeve (5), and the second clamping block (9) is clamped into the second clamping groove (8), then the two half type bottom blocks (20) are sleeved on the corresponding positions of the rotating ring (19), and the two half type bottom blocks (20) are connected by screws, the gas cylinder (33) is installed outside the rotating ring (19), the control pipeline of the gas cylinder (33) is led to the inside of the vehicle body through the hole position of the fixing sleeve (4), then the guide column (22) is inserted from the side of the bottom block (20) and passes through the guide groove (21) through the hole position, the rotating ring (19), the bottom block (20) and the oil storage block (30) are aligned into the rotating groove (18) and the movable groove (27) of the other half of the fixing sleeve (4), and the two half type fixing sleeves (4) are combined and connected through the screw hole, then the top block (13), the telescopic shaft (14) and the first spring (15) are assembled into the corresponding telescopic groove (12) and telescopic hole (34) of the middle frame (3), the roller shaft (11) is installed into the roller shaft groove (7), then the middle frame (3) is sleeved on the outer side of the fixing sleeve (4), then the inner ring (2) is sleeved on the outer side of the middle frame (3), so that the first clamping block (6) and the second clamping block (9) are clamped, at this time, the installation of the hub (1) near the vehicle body is completed, and the other side of the hub (1) is installed in the same structure in the opposite direction, and the fixing sleeve (4) is pressed against the nut of the vehicle body structure to complete the installation.

9. The process for producing a high-strength jounce bumper hub bearing of claim 8, wherein: The drilling and milling machine tool equipment in step S2 adopts a radial drilling machine with a model of Z3025x10.

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