High-load lightweight hub bearing

Abstract

The invention relates to the technical field of hub bearings, in particular to a high-load lightweight hub bearing. Comprising a driving shaft, a hub bearing, a half shaft bolt, a first locking glue layer and a second locking glue layer. A first connecting shaft at the end of the driving shaft is provided with a first connecting hole; the hub bearing is provided with a second connecting hole, and the hub bearing is detachably connected to the first connecting shaft; the half shaft bolt comprises an end cover and a second connecting shaft detachably connected to the first connecting hole. The end cover abuts against the hub bearing and is used for keeping the driving shaft and the hub bearing relatively fixed; the first locking glue layer is arranged between the half shaft bolt and the driving shaft; and the second locking glue layer is positioned between the hub bearing and the driving shaft. The light-weight connecting structure of the driving shaft assembly and the hub bearing is light in weight, and oil consumption can be reduced; during maintenance, the suspension control arm does not need to be disassembled, the disassembly and assembly torque is small, and the maintenance efficiency is high; the structure is firm, the connection failure risk is avoided, and the vehicle starting abnormal sound is eliminated.

Description

Technical Field

[0001] The present application relates to the technical field of wheel hub bearings, and in particular to a high-load lightweight wheel hub bearing. Background Art

[0002] The existing vehicle driving force transmission path is: the engine power is transmitted to the transmission, then to the drive shaft, then to the wheel bearing, and finally to the wheel. Among them, the drive shaft passes through the wheel bearing, and the half-shaft nut is used to fix the drive shaft and the wheel bearing. Under bad road conditions, the connection between the drive shaft and the wheel bearing is easy to fail; and when the vehicle starts from a standstill, there will be a small angle of circumferential sliding between the mating surfaces of the drive shaft and the wheel bearing, and the friction between the mating surfaces will produce abnormal noise when the vehicle starts.

[0003] Moreover, the drive shaft has an external threaded section. During maintenance, the suspension control arm needs to be removed and the wheel hub bearing needs to be pulled to one side to make axial space so that the drive shaft can be withdrawn from the internal spline of the wheel hub bearing to the other side. The maintenance workload is large and the maintenance efficiency is low. The installation torque of the half-shaft nut is generally 300Nm~500Nm, and the installation torque is large. A large torque tightening machine is required to complete the assembly of the drive shaft assembly, and both installation and disassembly are relatively difficult. In addition, the specifications of the drive shaft threaded section and the half-shaft nut are generally M20~M24, which are heavy, resulting in a large total weight of the drive shaft assembly. Summary of the invention

[0004] In order to overcome the disadvantages mentioned in the background, the present invention provides a high-load lightweight wheel hub bearing.

[0005] The technical solution of the present invention is: a high-load lightweight wheel hub bearing, including a detection box and a box door; two box doors are installed at the front of the detection box; it also includes a first mounting plate, a collection box, a liquid level tube, a first cylinder, an electric clamp, a clamping plate, a mounting block and a spray pipe; a plurality of first mounting plates are fixedly connected to the lower side of the detection box; the upper sides of a plurality of first mounting plates are commonly fixedly connected to the collection box; the right part of the collection box is connected to a liquid level tube; a first cylinder is respectively fixedly connected to the left and right sides of the detection box; an electric clamp is respectively fixedly connected to the telescopic ends of the two first cylinders; the two electric clamps are respectively connected to two clamping plates; a plurality of mounting blocks are fixedly connected to the upper part of the detection box; a spray pipe is commonly fixedly connected to the lower parts of a plurality of mounting blocks.

[0006] As an improvement of the above solution, a handle is provided on the box door.

[0007] As an improvement of the above solution, the lower inner side of the collecting box is inclined to the right.

[0008] As an improvement to the above solution, a hydrophobic material is provided on the lower inner side of the collection box.

[0009] As an improvement of the above solution, a scale is provided on the liquid level tube.

[0010] As an improvement of the above solution, a convex strip is provided on the clamping plate.

[0011] As an improvement of the above scheme, it also includes a toughness detection unit; the toughness detection unit includes a mounting frame, a second cylinder, a second mounting plate, a spring and an extrusion plate; the mounting frame is fixedly connected to the upper side of the detection box; a plurality of group pushers are connected to the lower side of the mounting frame; each pusher includes two second cylinders; each pusher is fixedly connected to a second mounting plate; a plurality of group compression members are connected to the lower side of each second mounting plate; each compression member is composed of three springs; and a compression plate is fixedly connected to the lower side of each compression member.

[0012] As an improvement of the above solution, burrs are provided on the lower side of the extrusion plate.

[0013] As an improvement of the above scheme, it also includes a collecting unit; the collecting unit includes a third mounting plate, an electric slide rail, an electric slider, a fourth mounting plate, a scraper, a liquid storage tank, a water baffle, a first wedge block and a second wedge block; a through groove is respectively opened at the front and rear of the collecting box; a third mounting plate is respectively fixedly connected to the front and rear sides of the collecting box; an electric slide rail is respectively fixedly connected to the two third mounting plates; an electric slider is respectively slidably connected to the two electric slide rails; a fourth mounting plate is commonly fixedly connected between the two electric sliders; a scraper is fixedly connected to the upper side of the fourth mounting plate; a liquid storage tank is fixedly connected to the right side of the fourth mounting plate; a water baffle is slidably connected to the right side of the liquid storage tank; a first wedge block is respectively fixedly connected to the front right side and the rear right side of the water baffle; a second wedge block is respectively fixedly connected to the right side of the collecting box.

[0014] As an improvement to the above solution, a baffle is respectively provided at the front and rear of the scraper.

[0015] Beneficial effects: 1. The present invention detects the puncture resistance of the waterproof membrane by providing a convex thorn extrusion plate on the lower side, and reciprocates the pulling resistance of the waterproof membrane by electric clamps and clamps.

[0016] 2. The present invention scrapes off the water on the lower side of the waterproof membrane by a scraper, and the scraped water eventually flows into the liquid level pipe. In this way, when the waterproof performance of the waterproof membrane has only slight defects, the staff can also judge the degree of damage of the waterproof membrane by observing the water volume in the liquid level pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural cross-sectional view of a lightweight drive shaft assembly and a wheel hub bearing connection structure provided by an embodiment of the present invention; Figure 2 is a schematic structural diagram of a drive shaft assembly provided by an embodiment of the present invention; Figure 3 is a schematic structural diagram of a wheel hub bearing provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of a half-axle bolt provided in an embodiment of the present invention.

[0018] The reference numerals in the figure are as follows: 1. driving shaft; 11. first connecting shaft; 12. first connecting hole; 13. first end face; 2. wheel hub bearing; 21. second connecting hole; 22. second end face; 3. half-axle bolt; 31. end cover; 32. second connecting shaft; 33. reinforcement section. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] like Figure 1-Figure 4 As shown, an embodiment of the present invention provides a lightweight drive shaft assembly and wheel hub bearing connection structure, including a drive shaft 1, a wheel hub bearing 2, a half-shaft bolt 3, a first locking rubber layer and a second locking rubber layer. A first connecting shaft 11 is provided at the end of the drive shaft 1, and one end of the first connecting shaft 11 has an opening and is connected to the first connecting hole 12. The wheel hub bearing 2 is provided with a second connecting hole 21, and the wheel hub bearing 2 is detachably connected to the first connecting shaft 11. The half-shaft bolt 3 includes an end cover 31 and a second connecting shaft 32, the end cover 31 is fixedly connected to the second connecting shaft 32, and the second connecting shaft 32 is detachably connected to the first connecting hole 12, and the end cover 31 abuts against one end of the wheel hub bearing 2 away from the drive shaft 1, and the end cover 31 is used to keep the drive shaft 1 and the wheel hub bearing 2 relatively fixed. Preferably, the second connecting shaft 32 adopts M10-M14 and is light in weight. The first locking rubber layer is provided between the half-shaft bolt 3 and the drive shaft 1, and the first locking rubber layer is configured to fasten the half-shaft bolt 3 and the drive shaft 1. The second locking rubber layer is disposed between the wheel hub bearing 2 and the drive shaft 1 , and the second locking rubber layer is configured to fasten the wheel hub bearing 2 and the drive shaft 1 .

[0021] The lightweight drive shaft assembly and wheel hub bearing connection structure of the embodiment of the present invention eliminates the external thread section of the drive shaft 1, and sets a first connection hole 12 on the first connection shaft 11 for connecting the wheel hub bearing 2, and adopts a half shaft bolt 3 The axial length of the drive shaft 1 can be shortened by about 40mm to 50mm, thereby greatly reducing the total weight of the drive shaft assembly, helping to reduce the weight of the vehicle, reduce fuel consumption, and increase driving range; during maintenance, the half-shaft bolts 3 are removed to rotate the drive shaft assembly in a certain direction to make room for the axial space, and the drive shaft 1 can be removed without removing the suspension control arm, thereby greatly reducing the maintenance workload and improving the maintenance efficiency; due to the use of the half-shaft bolts 3, the installation and removal torque is small, and there is no need to use a large torque tightening machine, thereby reducing costs; a first locking rubber layer is provided between the half-shaft bolts 3 and the drive shaft 1, which can ensure that the half-shaft bolts 3 and the drive shaft 1 will not loosen, thereby improving reliability, and there is no risk of connection failure between the drive shaft 1 and the wheel hub bearing 2; a second locking rubber layer is provided between the wheel hub bearing 2 and the drive shaft 1, and relative sliding will not occur between the mating surfaces of the wheel hub bearing 2 and the drive shaft 1, thereby eliminating abnormal noise when the vehicle starts due to friction.

[0022] Further, the second connecting shaft 32 is provided with an external thread, the first connecting hole 12 is provided with an internal thread, and the half-shaft bolt 3 is threadedly connected to the driving shaft 1. Through the threaded connection, it is convenient to disassemble and assemble the half-shaft bolt 3.

[0023] Furthermore, the first connecting shaft 11 is provided with an external spline, and the second connecting hole 21 is provided with an internal spline. Furthermore, a second locking rubber layer is coated on the external spline of the first connecting shaft 11, and the second locking rubber layer extends along the axial direction of the first connecting shaft 11. By coating the second locking rubber layer on the external spline of the drive shaft 1, and then assembling the drive shaft 1 and the hub bearing 2 together, since the spline gap is completely filled with locking rubber, when the vehicle starts, the circumferential sliding between the mating surfaces of the drive shaft 1 and the hub bearing 2 can be avoided, thereby eliminating the abnormal sound when the car starts, improving the NVH (noise, vibration and harshness) quality of the whole vehicle, and improving customer satisfaction. Preferably, the locking rubber is coated on the external spline of the drive shaft 1 and left to stand for 24 hours, and the second locking rubber layer can be formed when the locking rubber is completely solidified.

[0024] Furthermore, the first locking adhesive layer is abutted and coated on the second connecting shaft 11. The first locking adhesive layer is coated on the second connecting shaft 11 for easy operation.

[0025] Furthermore, the drive shaft 1 further includes a first end face 13, which is connected to the other end of the first connecting shaft 11 away from the half-shaft bolt 3; the wheel hub bearing 2 further includes a second end face 22, which is arranged at the other end of the wheel hub bearing 2 away from the half-shaft bolt 3, and the first end face 13 abuts against the second end face 22. When the half-shaft bolt 3 is tightened to relatively fix the wheel hub bearing 2 and the drive shaft 1, the first end face 13 abuts against the second end face 22.

[0026] Furthermore, the width of the first locking adhesive layer is 10 mm to 14 mm. The first locking adhesive layer with a width of 10 mm to 14 mm has sufficient locking force. In other embodiments, the first locking adhesive layer with other widths may also be selected according to the length of the half-axle bolt 3, and is not limited to this embodiment.

[0027] Furthermore, the distance between the first locking adhesive layer and the end of the second connecting shaft 32 is 3 mm to 5 mm, so as to avoid excessive locking adhesive which may affect the assembly of the half-axle bolt 3 and the driving shaft 1 .

[0028] Furthermore, the half-axle bolt 3 further includes a reinforcement section 33, the reinforcement section 33 is provided with a conical surface, and the conical surface connects the end cover 31 and the second connecting shaft 32; the end cover 31 and the second connecting shaft 32 are integrally formed. Figure 4 As shown, the reinforcement section 33 improves the overall strength of the half-shaft bolt 3 and avoids fracture between the end cover 31 and the second connecting shaft 32 . It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A high-load lightweight wheel hub bearing, characterized in that: The invention comprises a driving shaft (1), wherein a first connecting shaft (11) is provided at the end of the driving shaft (1), wherein one end of the first connecting shaft (11) has an opening and is connected to a first connecting hole (12); a wheel hub bearing (2), wherein the wheel hub bearing (2) is provided with a second connecting hole (21), wherein the wheel hub bearing (2) is detachably connected to the first connecting shaft (11); and a half-axle bolt (3), wherein the half-axle bolt (3) comprises an end cover (31) and a second connecting shaft (32), wherein the end cover (31) is fixedly connected to the second connecting shaft (32), wherein the second connecting shaft (32) is detachably connected to the first connecting hole (12 ... The end cover (31) abuts against one end of the wheel hub bearing (2) away from the drive shaft (1), and the end cover (31) is configured to keep the drive shaft (1) and the wheel hub bearing (2) relatively fixed; a first locking rubber layer, the first locking rubber layer is arranged between the half-shaft bolt (3) and the drive shaft (1), and the first locking rubber layer is configured to fasten the half-shaft bolt (3) and the drive shaft (1); a second locking rubber layer, the second locking rubber layer is arranged between the wheel hub bearing (2) and the drive shaft (1), and the second locking rubber layer is configured to fasten the wheel hub bearing (2) and the drive shaft (1).

2. A high-load lightweight hub bearing according to claim 1, characterized in that: The second connecting shaft (32) is provided with an external thread, the first connecting hole (12) is provided with an internal thread, and the half-shaft bolt (3) and the driving shaft (1) are threadedly connected.

3. The high-load lightweight hub bearing according to claim 1, characterized in that: The first connecting shaft (11) is provided with an external spline, the second connecting hole (21) is provided with an internal spline, and the drive shaft (1) and the wheel hub bearing (2) are spline-connected.

4. A high-load lightweight hub bearing according to claim 3, characterized in that: The second locking adhesive layer is coated on the external spline of the first connecting shaft (11), and the second locking adhesive layer extends along the axial direction of the first connecting shaft (11).

5. The high-load lightweight hub bearing according to claim 1, characterized in that: The first locking adhesive layer is coated on the second connecting shaft (32).

6. The high-load lightweight hub bearing according to claim 1, characterized in that: The drive shaft (1) further comprises a first end face (13), the first end face (13) being located at the other end of the first connecting shaft (11) away from the half-shaft bolt (3); the wheel hub bearing (2) further comprises a second end face (22), the second end face (22) being arranged at the other end of the wheel hub bearing (2) away from the half-shaft bolt (3), the first end face (13) abutting against the second end face (22).

7. The high-load lightweight hub bearing according to claim 1, characterized in that: The end cover (31) and the second connecting shaft (32) are integrally formed.

8. The high-load lightweight hub bearing according to claim 7, characterized in that: The width of the first locking adhesive layer is 10 mm to 14 mm.

9. A high-load lightweight hub bearing according to any one of claims 7-8, characterized in that: The distance between the first locking adhesive layer and the end of the second connecting shaft (32) is 3 mm to 5 mm.

10. The high-load lightweight hub bearing according to claim 9, characterized in that: The half-axle bolt (3) further comprises a reinforcement section (33), wherein the reinforcement section (33) comprises a conical surface, and wherein the conical surface is respectively connected to the end cover (31) and the second connecting shaft (32).

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