Distributed driving new energy automobile integrated hub bearing unit

Abstract

The invention relates to the technical field of integrated hub bearing units, in particular to an integrated hub bearing unit of a distributed driving new energy automobile, and solves the problems that when an ABS sensor in the integrated hub bearing unit breaks down, the integrated hub bearing unit is inconvenient to disassemble, and the ABS sensor is not convenient to maintain, overhaul or replace. An integrated hub bearing unit of a distributed driving new energy automobile comprises a hub connecting shaft sleeve and a hub bearing support connecting shaft sleeve, and a hub bearing unit body is installed between the hub connecting shaft sleeve and the hub bearing support connecting shaft sleeve. Connecting flanges are fixed to one end of the hub connecting shaft sleeve and one end of the hub bearing support connecting shaft sleeve, and assembling connecting holes are formed in the four end corners of each connecting flange in a penetrating mode. The integrated hub bearing unit can be quickly disassembled, the internal ABS sensor can be taken out, and the ABS sensor can be conveniently maintained, overhauled or replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated hub bearing units, and particularly to an integrated hub bearing unit for a distributed drive new energy vehicle. Background Art

[0002] A new energy vehicle refers to a vehicle that uses unconventional vehicle fuel as the power source (or uses conventional vehicle fuel and adopts a new in-vehicle power device), integrates advanced technologies in the aspects of power control and drive of the vehicle, and forms an advanced technical principle, new technology, and new structure vehicle. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc. The hub bearing is one of the key components of an automobile. Its main function is to bear the weight and provide precise guidance for the rotation of the hub. This requires it to be able to bear not only axial loads but also radial loads. The hub bearing is used in the wheel part of new energy vehicles and ordinary vehicles. The integrated hub bearing includes two forms: drive type and distributed drive type. Among them, the distributed drive integrated hub bearing is a design that directly integrates the drive motor into the wheel hub, cancels intermediate transmission components such as drive shafts and differentials, and realizes direct drive between the motor and the wheel.

[0003] However, when the ABS sensor inside the integrated hub bearing unit fails, the integrated hub bearing unit is not convenient to disassemble, which is not conducive to the maintenance, repair, or replacement of the ABS sensor; therefore, it does not meet the existing requirements. For this reason, we propose an integrated hub bearing unit for a distributed drive new energy vehicle. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated hub bearing unit for a distributed drive new energy vehicle to solve the problems in the above background art that when the ABS sensor inside the integrated hub bearing unit fails, the integrated hub bearing unit is not convenient to disassemble, which is not conducive to the maintenance, repair, or replacement of the ABS sensor, etc.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An integrated hub bearing unit for a distributed drive new energy vehicle, including a hub connection shaft sleeve and a hub bearing bracket connection shaft sleeve. A hub bearing unit main body is installed between the hub connection shaft sleeve and the hub bearing bracket connection shaft sleeve. One end of the hub connection shaft sleeve and one end of the hub bearing bracket connection shaft sleeve are both fixed with connection flanges, and assembly connection holes are penetrated through four end corners of the connection flanges. The hub bearing unit body includes an outer bearing ring and an inner bearing ring. The outer bearing ring is located outside the end of the hub connecting shaft sleeve, and the inner bearing ring is located outside the end of the hub bearing bracket connecting shaft sleeve. A first sealing end ring and a second sealing end ring are slidably installed between the outer bearing ring and the inner bearing ring. A first limiting ring is fixed inside the outer bearing ring, and a second limiting ring is fixed on the outer surface of the inner bearing ring. A plurality of first roller grooves are provided on both sides of the first limiting ring and are distributed in a circular array around the center of the outer bearing ring. A plurality of second roller grooves are provided on both sides of the second limiting ring and are distributed in a circular array around the center of the inner bearing ring. A plurality of first bearing rollers and second bearing rollers are provided between the first sealing end ring, the second sealing end ring and the outer bearing ring, the inner bearing ring. The first bearing rollers are clamped inside the first roller grooves, and the second bearing rollers are clamped inside the second roller grooves. Sealing ring grooves are provided on the end faces of the first sealing end ring and the second sealing end ring that are in contact with the outer bearing ring and the inner bearing ring, and sealing rings are clamped inside the sealing ring grooves.

[0006] Preferably, an installation hole is provided through the inside of the first sealing end ring, and an ABS sensor is installed inside the installation hole. The ABS sensor includes an external transmission wire harness. One end of the external transmission wire harness is fixed with a sealed connection terminal. The sealed connection terminal is located inside the installation hole, and a sensor connection wire is detachably installed at the end of the sealed connection terminal located inside the installation hole. One end of the sensor connection wire extends through the installation hole to between the first sealing end ring and the second sealing end ring, and a sensor body is fixed at this end of the sensor connection wire. The sensor body is in contact with the first sealing end ring and the second sealing end ring.

[0007] Preferably, the end of the sensor connection wire connected to the sealed connection terminal is spiral, and the length dimension of the sensor connection wire is greater than the length dimension of the installation hole.

[0008] Preferably, a plurality of first splicing holes are provided through the outer surface of the first sealing end ring, and a plurality of second splicing holes are provided through the outer surface of the second sealing end ring. The first splicing holes and the second splicing holes are distributed in a circular array around the axes of the first sealing end ring and the second sealing end ring, and the number of the first splicing holes and the second splicing holes is the same and they correspond one by one.

[0009] Preferably, a sealing connector is installed inside the first splicing hole and the second splicing hole with coincident axes. The first sealing end ring and the second sealing end ring are connected and fixed through the sealing connector.

[0010] Preferably, the sealing connector includes a fixed connection sleeve and a fixed connection screw. The fixed connection sleeve is inserted inside the first splicing hole, and the fixed connection screw is inserted inside the second splicing hole. The end of the fixed connection sleeve facing the fixed connection screw is provided with a connecting threaded hole, and one end of the fixed connection screw is inserted inside the connecting threaded hole and is threadedly connected to the fixed connection sleeve.

[0011] Preferably, a first sealing groove is provided on the outer surface of the large end of the fixed connection sleeve, and a first sealing washer is clamped inside the first sealing groove. A second sealing groove is provided on the outer surface of the large end of the fixed connection screw, and a second sealing washer is clamped inside the second sealing groove.

[0012] Preferably, a lubricating oil filling structure is further installed on the outer surface of the first sealing end ring. The lubricating oil filling structure includes a filling hole that does not penetrate the first sealing end ring. Two filling communication holes are provided on the inner surface of the filling hole, and one end of the filling communication hole penetrates the first sealing end ring.

[0013] Preferably, a sliding sealing sleeve is slidably installed inside the filling hole. An adding docking hole is provided inside the sliding sealing sleeve. Two adding liquid grooves are provided on the inner surface of the adding docking hole. The adding liquid grooves penetrate the shell of the sliding sealing sleeve and correspond to the positions of the filling communication holes. A sealing spring is fixed between the sliding sealing sleeve and the inner end face of the filling hole.

[0014] Preferably, positioning guiding surfaces are provided on the outer side and the inner side of the ends of the first sealing end ring and the second sealing end ring located between the outer ring of the bearing and the inner ring of the bearing. The inclination angle of the positioning guiding surface is five degrees.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When a fault or damage occurs during the use of the sensor main body and needs to be replaced, or when the first bearing roller and the second bearing roller are damaged and need to be replaced, only the hub connection shaft sleeve and the hub bearing bracket connection shaft sleeve need to be removed from the connection part, and then the fixed connection sleeve and the fixed connection screw are separated, so that the first sealing end ring and the second sealing end ring can be separated. After the first sealing end ring and the second sealing end ring are separated and pulled, the first sealing end ring and the second sealing end ring can be separated from the outer ring of the bearing and the inner ring of the bearing, and the sensor main body, the first bearing roller and the second bearing roller are exposed. At this time, the sensor main body, the first bearing roller and the second bearing roller can be directly replaced, which is convenient for overhauling, maintaining or replacing the sensor main body, reduces the operation difficulty and improves the maintenance and overhaul work efficiency of the integrated hub bearing unit; 2. After squeezing the sliding seal sleeve into the filling hole in the present invention, the liquid adding tank is communicated with the filling connecting hole. At this time, lubricant can be added between the first sealing end ring, the outer ring of the bearing, and the inner ring of the bearing through the adding docking hole, the liquid adding tank, and the filling connecting hole. The lubricant can be added without disassembling the integrated hub bearing unit, ensuring that the integrated hub bearing unit has sufficient lubrication. 3. In the present invention, the sensor main body is connected to the first sealing end ring through the sensor connecting wire and the sealing connecting terminal. First bearing rollers and second bearing rollers are respectively arranged between the first sealing end ring and the outer ring of the bearing and the inner ring of the bearing. When the outer ring of the bearing or the inner ring of the bearing rotates, the first sealing end ring and the second sealing end ring remain relatively stationary, so as to ensure that the external transmission wire harness does not rotate simultaneously due to the operation of the integrated hub bearing unit, and avoid the external transmission wire harness from being broken due to winding and pulling during rotation. Description of the Drawings

[0016] Figure 1 is the schematic structural diagram of the whole of the present invention; Figure 2 is the schematic structural diagram of the hub bearing unit main body of the present invention; Figure 3 is the schematic structural diagram of the outer ring of the bearing and the inner ring of the bearing of the present invention; Figure 4 is the structural sectional view of the outer ring of the bearing and the inner ring of the bearing of the present invention; Figure 5 is the schematic structural diagram of the second sealing end ring of the present invention; Figure 6 is the schematic structural diagram of the first sealing end ring of the present invention; Figure 7 is the connection schematic diagram of the first sealing end ring and the second sealing end ring of the present invention; Figure 8 is the schematic structural diagram of the sealing connector of the present invention; Figure 9 is the schematic structural diagram of the ABS sensor of the present invention; Figure 10 is the schematic structural diagram of the lubricating oil filling structure of the present invention.

[0017] In the figure: 1, hub connecting bushing; 2, hub bearing bracket connecting bushing; 3, connecting flange; 4, assembly connecting hole; 5, hub bearing unit body; 501, bearing outer ring; 502, bearing inner ring; 503, first sealing end ring; 504, second sealing end ring; 505, ABS sensor; 5051, external transmission wire harness; 5052, sealed connecting terminal; 5053, sensor connecting wire; 5054, sensor body; 506, first splicing hole; 507, lubricating oil filling structure; 5071, filling hole; 5072, sliding sealing sleeve; 5073, adding liquid tank; 5074, sealing spring; 5075, filling communication hole; 5076, adding docking hole; 508, first roller card slot; 509, second roller card slot; 510, first limiting ring; 511, second limiting ring; 512, sealing connector; 5121, fixed connecting sleeve; 5122, fixed connecting screw; 5123, connecting threaded hole; 5124, first sealing groove; 5125, first sealing washer; 5126, second sealing groove; 5127, second sealing washer; 513, sealing ring groove; 514, sealing ring; 515, first bearing roller; 516, second bearing roller; 517, second splicing hole; 518, positioning guiding surface; 519, mounting hole. Detailed implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] As Figure 1 shown, an integrated hub bearing unit for a distributed drive new energy vehicle includes a hub connecting bushing 1 and a hub bearing bracket connecting bushing 2. A hub bearing unit body 5 is installed between the hub connecting bushing 1 and the hub bearing bracket connecting bushing 2. Connecting flanges 3 are fixed to one end of the hub connecting bushing 1 and one end of the hub bearing bracket connecting bushing 2, and assembly connecting holes 4 are provided through the four end corners of the connecting flange 3.

[0020] As Figures 1 to 6As shown in the figure, the hub bearing unit body 5 includes an outer bearing ring 501 and an inner bearing ring 502. The outer bearing ring 501 is located outside the end of the hub connecting shaft sleeve 1, and the inner bearing ring 502 is located outside the end of the hub bearing bracket connecting shaft sleeve 2. A first sealing end ring 503 and a second sealing end ring 504 are slidably installed between the outer bearing ring 501 and the inner bearing ring 502. A first limiting ring 510 is fixed inside the outer bearing ring 501, and a second limiting ring 511 is fixed on the outer surface of the inner bearing ring 502. On both sides of the first limiting ring 510, there are a plurality of first roller slots 508 distributed in a circular array around the center of the outer bearing ring 501. On both sides of the second limiting ring 511, there are a plurality of second roller slots 509 distributed in a circular array around the center of the inner bearing ring 502. Between the first sealing end ring 503, the second sealing end ring 504 and the outer bearing ring 501, the inner bearing ring 502, there are a plurality of first bearing rollers 515 and second bearing rollers 516. The first bearing rollers 515 are clamped inside the first roller slots 508, and the second bearing rollers 516 are clamped inside the second roller slots 509. On the end faces where the first sealing end ring 503, the second sealing end ring 504 are in contact with the outer bearing ring 501, the inner bearing ring 502, there are sealing ring grooves 513, and sealing rings 514 are clamped inside the sealing ring grooves 513. The first sealing end ring 503 and the second sealing end ring 504 are used to limit the positions of the first bearing rollers 515 and the second bearing rollers 516, and the outer bearing ring 501 and the inner bearing ring 502 are connected and driven through the first bearing rollers 515, the second bearing rollers 516, the first sealing end ring 503 and the second sealing end ring 504, ensuring that the first sealing end ring 503 and the second sealing end ring 504 are relatively stationary during the process that the hub connecting shaft sleeve 1 drives the outer bearing ring 501 to rotate and the hub bearing bracket connecting shaft sleeve 2 drives the inner bearing ring 502 to rotate.

[0021] On the outer side and the inner side of the ends where the first sealing end ring 503 and the second sealing end ring 504 are located between the outer bearing ring 501 and the inner bearing ring 502, there are positioning and guiding surfaces 518. The inclination angle of the positioning and guiding surfaces 518 is five degrees. When the positioning and guiding surfaces 518 provided at the ends of the first sealing end ring 503 and the second sealing end ring 504 are inserted between the outer bearing ring 501 and the inner bearing ring 502, the positioning and guiding surfaces 518 can contact and push the first bearing rollers 515 and the second bearing rollers 516 to move, so that the first bearing rollers 515 and the second bearing rollers 516 drive the outer bearing ring 501 and the inner bearing ring 502 to move, realizing the centering positioning of the outer bearing ring 501 and the inner bearing ring 502.

[0022] A plurality of first splicing holes 506 are provided through the outer surface of the first sealing end ring 503, and a plurality of second splicing holes 517 are provided through the outer surface of the second sealing end ring 504. The first splicing holes 506 and the second splicing holes 517 are distributed in a circular array around the axes of the first sealing end ring 503 and the second sealing end ring 504, and the number of the first splicing holes 506 and the second splicing holes 517 is the same and they correspond to each other one by one. A sealing connecting member 512 is installed inside the first splicing hole 506 and the second splicing hole 517 with coincident axes. The first sealing end ring 503 and the second sealing end ring 504 are connected and fixed through the sealing connecting member 512. The first sealing end ring 503 and the second sealing end ring 504 are installed at the ends of the bearing outer ring 501 and the bearing inner ring 502 through the sealing connecting member 512 to realize the overall sealing of the integrated hub bearing unit. And after the sealing connecting member 512 is taken out from the inside of the first sealing end ring 503 and the second sealing end ring 504, the first sealing end ring 503 and the second sealing end ring 504 can be separated from the bearing outer ring 501 and the bearing inner ring 502, and then the whole integrated hub bearing unit can be disassembled.

[0023] As Figure 7 and Figure 8 shown, the sealing connecting member 512 includes a fixed connection sleeve 5121 and a fixed connection screw 5122. The fixed connection sleeve 5121 is inserted inside the first splicing hole 506, and the fixed connection screw 5122 is inserted inside the second splicing hole 517. A connection threaded hole 5123 is provided at the end of the fixed connection sleeve 5121 facing the fixed connection screw 5122. One end of the fixed connection screw 5122 is inserted inside the connection threaded hole 5123 and is threadedly connected with the fixed connection sleeve 5121. A first sealing groove 5124 is provided on the outer surface of the large end of the fixed connection sleeve 5121, and a first sealing washer 5125 is clamped inside the first sealing groove 5124. A second sealing groove 5126 is provided on the outer surface of the large end of the fixed connection screw 5122, and a second sealing washer 5127 is clamped inside the second sealing groove 5126. The fixed connection sleeve 5121 and the fixed connection screw 5122 are connected and locked through threads, and it is ensured that the fixed connection sleeve 5121 and the fixed connection screw 5122 tighten the first sealing end ring 503 and the second sealing end ring 504. And the gaps between the fixed connection sleeve 5121 and the first sealing end ring 503, and between the fixed connection screw 5122 and the second sealing end ring 504 are filled through the first sealing washer 5125 and the second sealing washer 5127 to ensure the internal sealing of the integrated hub bearing unit.

[0024] As Figure 9As shown, an installation hole 519 runs through the interior of the first sealing end ring 503. An ABS sensor 505 is installed inside the installation hole 519. The ABS sensor 505 includes an external transmission wire harness 5051. A sealing connection terminal 5052 is fixed to one end of the external transmission wire harness 5051. The sealing connection terminal 5052 is located inside the installation hole 519. And a sensor connection wire 5053 is detachably installed at the end of the sealing connection terminal 5052 located inside the installation hole 519. One end of the sensor connection wire 5053 extends through the installation hole 519 to the space between the first sealing end ring 503 and the second sealing end ring 504. A sensor main body 5054 is fixed to this end of the sensor connection wire 5053. The sensor main body 5054 is in contact with the first sealing end ring 503 and the second sealing end ring 504. By installing the sensor main body 5054 between the first sealing end ring 503 and the second sealing end ring 504, it is ensured that the sensor main body 5054 remains relatively stationary during the operation of the integrated hub bearing unit, and the external transmission wire harness 5051 will not rotate due to the operation of the integrated hub bearing unit, avoiding the breakage of the external transmission wire harness 5051 due to winding and pulling caused by rotation.

[0025] The end of the sensor connection wire 5053 connected to the sealing connection terminal 5052 is spiral. The length dimension of the sensor connection wire 5053 is greater than the length dimension of the installation hole 519, ensuring that when the sealing connection terminal 5052 is separated from the inside of the installation hole 519, the end of the sensor connection wire 5053 can be pulled out synchronously without pulling on the sensor main body 5054.

[0026] As Figure 10As shown, a lubricating oil filling structure 507 is also installed on the outer surface of the first sealing end ring 503. The lubricating oil filling structure 507 includes a filling hole 5071 which does not penetrate through the first sealing end ring 503. Two filling communication holes 5075 are provided on the inner surface of the filling hole 5071. One end of each filling communication hole 5075 penetrates through the first sealing end ring 503. A sliding seal sleeve 5072 is slidably installed inside the filling hole 5071. An adding docking hole 5076 is provided inside the sliding seal sleeve 5072. Two adding liquid grooves 5073 are provided on the inner surface of the adding docking hole 5076. The adding liquid grooves 5073 penetrate through the shell of the sliding seal sleeve 5072 and correspond to the positions of the filling communication holes 5075. A sealing spring 5074 is fixed between the sliding seal sleeve 5072 and the inner end face of the filling hole 5071. After the sliding seal sleeve 5072 is squeezed into the filling hole 5071, the adding liquid grooves 5073 are communicated with the filling communication holes 5075. At this time, lubricant can be added between the first sealing end ring 503, the bearing outer ring 501 and the bearing inner ring 502 through the adding docking hole 5076, the adding liquid grooves 5073 and the filling communication holes 5075. The addition of lubricant can be completed without disassembling the integrated hub bearing unit, ensuring that the integrated hub bearing unit has sufficient lubrication degree.

[0027] Working principle: When assembling the integrated hub bearing unit, first place the bearing outer ring 501 on the table, then place the bearing inner ring 502 inside the bearing outer ring 501, and snap the first bearing roller 515 into the first roller slot 508 and the second bearing roller 516 into the second roller slot 509. Subsequently, insert the end of the second sealing end ring 504 with the positioning guiding surface 518 between the bearing outer ring 501 and the bearing inner ring 502. When the second sealing end ring 504 is inserted, the positioning guiding surface 518 contacts the first bearing roller 515 and the second bearing roller 516. At this time, the first bearing roller 515 and the second bearing roller 516 are squeezed and enter the first roller slot 508 and the second roller slot 509, and push the bearing outer ring 501 and the bearing inner ring 502 to move on the table until the second sealing end ring 504 contacts all the first bearing rollers 515 and the second bearing rollers 516. At this time, the centers of the hub connecting bushing 1 and the hub bearing bracket connecting bushing 2 coincide, and insert the fixed connection screw 5122 into the second splicing hole 517. At this time, the outer bearing ring 501, the inner bearing ring 502, and the second sealing end ring 504 are turned over as a whole, so that the second sealing end ring 504 contacts the tabletop. One end of the sensor connecting wire 5053 is passed through the mounting hole 519 and connected to the sensor body 5054. Subsequently, the other end of the sensor connecting wire 5053 is assembled with the sealing connection terminal 5052, and the sensor connecting wire 5053 is received into the mounting hole 519. The end of the mounting hole 519 is closed by the sealing connection terminal 5052. Finally, the external transmission wire harness 5051 is connected to the sealing connection terminal 5052. At this time, the first sealing end ring 503 is inserted between the outer bearing ring 501 and the inner bearing ring 502 until the first sealing end ring 503 contacts the outer bearing ring 501 and the inner bearing ring 502. At this time, the sensor body 5054 is clamped between the first sealing end ring 503 and the second sealing end ring 504; Next, the fixed connection sleeve 5121 is inserted into the first splicing hole 506, so that the connection threaded hole 5123 at the end of the fixed connection sleeve 5121 contacts the end of the fixed connection screw 5122. The outer bearing ring 501, the inner bearing ring 502, the first sealing end ring 503, and the second sealing end ring 504 are erected and perpendicular to the tabletop. A tool is used to tighten the fixed connection sleeve 5121 and the fixed connection screw 5122, so that the end of the fixed connection screw 5122 enters the inner side of the connection threaded hole 5123. At this time, the fixed connection sleeve 5121 and the fixed connection screw 5122 approach each other and enter the inner sides of the first splicing hole 506 and the second splicing hole 517 until the large ends of the fixed connection sleeve 5121 and the fixed connection screw 5122 respectively contact the inner end faces of the first splicing hole 506 and the second splicing hole 517, completing the assembly of the integrated hub bearing unit. Then, the hub connection bushing 1 and the hub bearing bracket connection bushing 2 can be assembled with the hub bearing unit body 5; During the use of the sensor body 5054, if a malfunction or damage occurs and replacement is required, or if the first bearing roller 515 and the second bearing roller 516 are damaged and need to be replaced, only the hub connecting shaft sleeve 1 and the hub bearing bracket connecting shaft sleeve 2 need to be removed from the connecting part, and then the fixed connecting sleeve 5121 and the fixed connecting screw 5122 are separated, so that the first sealing end ring 503 and the second sealing end ring 504 can be separated. After the separation of the first sealing end ring 503 and the second sealing end ring 504, by pulling the first sealing end ring 503 and the second sealing end ring 504, the first sealing end ring 503 and the second sealing end ring 504 can be separated from the bearing outer ring 501 and the bearing inner ring 502, and the sensor body 5054, the first bearing roller 515 and the second bearing roller 516 are exposed. At this time, the sensor body 5054, the first bearing roller 515 and the second bearing roller 516 can be directly replaced, which is convenient for the maintenance, repair or replacement of the sensor body 5054, reduces the operation difficulty and improves the maintenance and repair work efficiency of the integrated hub bearing unit.

[0028] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An integrated wheel hub bearing unit for a distributed drive new energy vehicle, comprising a wheel hub connecting sleeve (1) and a wheel hub bearing bracket connecting sleeve (2), characterized in that: A wheel hub bearing unit body (5) is installed between the wheel hub connecting sleeve (1) and the wheel hub bearing bracket connecting sleeve (2); one end of the wheel hub connecting sleeve (1) and one end of the wheel hub bearing bracket connecting sleeve (2) are both fixed with connecting flanges (3); and four end corners of the connecting flange (3) are penetrated by assembly connecting holes (4); The hub bearing unit body (5) comprises a bearing outer ring (501) and a bearing inner ring (502), wherein the bearing outer ring (501) is located outside the end of the hub connecting sleeve (1), and the bearing inner ring (502) is located outside the end of the hub bearing bracket connecting sleeve (2), a first sealing end ring (503) and a second sealing end ring (504) are slidably mounted between the bearing outer ring (501) and the bearing inner ring (502), a first limiting ring (510) is fixed on the inner side of the bearing outer ring (501), and a second limiting ring (511) is fixed on the outer surface of the bearing inner ring (502), a plurality of first roller retaining grooves (508) are arranged on both sides of the first limiting ring (510) and are distributed in a circular array around the center of the bearing outer ring (501), and the second limiting ring (511) is fixed on the outer side of the bearing inner ring (502). A plurality of second roller retaining grooves (509) are arranged on both sides of the bearing outer ring (501) and arranged in a circular array around the center of the bearing inner ring (502); a plurality of first bearing rollers (515) and second bearing rollers (516) are arranged between the first sealing end ring (503), the second sealing end ring (504) and the bearing outer ring (501), and the bearing inner ring (502); the first bearing rollers (515) are clamped on the inner side of the first roller retaining grooves (508); the second bearing rollers (516) are clamped on the inner side of the second roller retaining grooves (509); the end surfaces of the first sealing end ring (503) and the second sealing end ring (504) that are in contact with the bearing outer ring (501) and the bearing inner ring (502) are both provided with sealing ring grooves (513); the inner side of the sealing ring grooves (513) is clamped with sealing rings (514).

2. The integrated wheel hub bearing unit for a distributed drive new energy vehicle according to claim 1, characterized in that: The first sealing end ring (503) is provided with a mounting hole (519) extending therethrough, an ABS sensor (505) is mounted inside the mounting hole (519), the ABS sensor (505) comprises an external transmission harness (5051), a sealing connection terminal (5052) is fixed at one end of the external transmission harness (5051), the sealing connection terminal (5052) is located inside the mounting hole (519), and a sensor connection line (5053) is detachably mounted at the end of the sealing connection terminal (5052) located inside the mounting hole (519), one end of the sensor connection line (5053) passes through the mounting hole (519) and extends to between the first sealing end ring (503) and the second sealing end ring (504), a sensor body (5054) is fixed at this end of the sensor connection line (5053), and the sensor body (5054) is in contact with the first sealing end ring (503) and the second sealing end ring (504).

3. The integrated wheel hub bearing unit for a distributed drive new energy vehicle according to claim 2, characterized in that: The end portion of the sensor connecting wire (5053) connected to the sealed connecting terminal (5052) is spiral-shaped, and the length of the sensor connecting wire (5053) is greater than the length of the mounting hole (519).

4. The integrated wheel hub bearing unit for a distributed drive new energy vehicle according to claim 1, characterized in that: The outer surface of the first sealing end ring (503) is penetrated by a plurality of first splicing holes (506), and the outer surface of the second sealing end ring (504) is penetrated by a plurality of second splicing holes (517). The first splicing holes (506) and the second splicing holes (517) are distributed in a circular array around the axis of the first sealing end ring (503) and the second sealing end ring (504), and the number of the first splicing holes (506) and the second splicing holes (517) are the same and correspond one to one.

5. The integrated hub bearing unit for distributed drive new energy vehicles according to claim 4, characterized in that: A sealing connection piece (512) is installed inside the first splicing hole (506) and the second splicing hole (517) whose axes coincide with each other, and the first sealing end ring (503) and the second sealing end ring (504) are connected and fixed via the sealing connection piece (512).

6. The integrated hub bearing unit for distributed drive new energy vehicles according to claim 5, characterized in that: The sealing connection piece (512) comprises a fixed connection sleeve (5121) and a fixed connection screw (5122); the fixed connection sleeve (5121) is inserted into the inner side of the first splicing hole (506); the fixed connection screw (5122) is inserted into the inner side of the second splicing hole (517); a connecting threaded hole (5123) is provided at the end of the fixed connection sleeve (5121) facing the fixing connection screw (5122); one end of the fixing connection screw (5122) is inserted into the inner side of the connecting threaded hole (5123) and is threadedly connected to the fixed connection sleeve (5121).

7. The integrated wheel hub bearing unit for a distributed drive new energy vehicle according to claim 6, characterized in that: The outer surface of the large end of the fixed connection sleeve (5121) is provided with a first sealing groove (5124), and a first sealing gasket (5125) is clamped on the inner side of the first sealing groove (5124). The outer surface of the large end of the fixed connection screw (5122) is provided with a second sealing groove (5126), and a second sealing gasket (5127) is clamped on the inner side of the second sealing groove (5126).

8. The integrated hub bearing unit for distributed drive new energy vehicles according to claim 1, characterized in that: The outer surface of the first sealing end ring (503) is also provided with a lubricating oil filling structure (507), the lubricating oil filling structure (507) comprising a filling hole (5071), the filling hole (5071) does not penetrate the first sealing end ring (503), and the inner surface of the filling hole (5071) is provided with two filling connecting holes (5075), one end of the filling connecting hole (5075) penetrates the first sealing end ring (503).

9. The integrated wheel hub bearing unit for distributed drive new energy vehicles according to claim 8, characterized in that: A sliding sealing sleeve (5072) is slidably mounted on the inner side of the filling hole (5071); an addition docking hole (5076) is provided on the inner side of the sliding sealing sleeve (5072); two addition liquid grooves (5073) are provided on the inner surface of the addition docking hole (5076); the addition liquid grooves (5073) penetrate the housing of the sliding sealing sleeve (5072) and correspond to the positions of the filling connecting holes (5075); and a sealing spring (5074) is fixed between the sliding sealing sleeve (5072) and the inner end surface of the filling hole (5071).

10. The integrated hub bearing unit for distributed drive new energy vehicles according to claim 1, characterized in that: Positioning guide surfaces (518) are provided on the outer and inner sides of the ends of the first sealing end ring (503) and the second sealing end ring (504) located between the bearing outer ring (501) and the bearing inner ring (502); the inclination angle of the positioning guide surface (518) is five degrees.

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