New energy automobile driving hub bearing unit and rigid support thereof

Abstract

The invention relates to the technical field of hub bearings, in particular to a new energy automobile driving hub bearing unit and a rigid support thereof, and solves the problems that in the assembling and operating process of an existing new energy automobile driving hub bearing unit, due to machining deviation of an assembling technology and a structure, stable assembling quality is inconvenient to maintain, and the production cost is low. The sealing device solves the problems that in the prior art, the sealing effect of operation of a bearing unit is affected, and axial and radial stable supporting of the bearing unit is inconvenient, and comprises a first sealing regulation and control assembly, a rotary circulation assembly and a second sealing regulation and control assembly, and the rotary circulation assembly is installed at the front end of the first sealing regulation and control assembly; and a second sealing regulation and control assembly is mounted on the inner side of the front end of the rotary circulation assembly. Automatic sealing adjustment is carried out on the bearing unit, sealing stability under different assembly levels and operation working conditions can be effectively met, and the hub can be effectively and stably supported in the radial direction and the axial direction by arranging the multiple bearings.

Description

Technical Field

[0001] The present invention relates to the technical field of hub bearings, and particularly to a driving hub bearing unit for a new energy vehicle and its rigid bracket. Background Art

[0002] The rigid bracket for a driving hub bearing unit is a mechanical component used to support and stabilize the driving hub bearing unit. It is usually made of metal materials and has a specific geometric shape and structure. Its main function is to provide a stable installation foundation for the driving hub bearing unit and bear various forces and vibrations generated during the movement of the wheel and the driving process of the vehicle. Among them, 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, which requires it to bear not only axial loads but also radial loads.

[0003] During the assembly and operation of the driving hub bearing unit of existing new energy vehicles, due to the processing deviations of the assembly process and structure, it is not convenient to maintain the stable quality of the assembly, which in turn affects the sealing effect of the operation of the bearing unit, and it is not convenient for the bearing unit to perform axial and radial stable support; therefore, it does not meet the existing requirements, and for this reason, we propose a driving hub bearing unit for a new energy vehicle and its rigid bracket. Summary of the Invention

[0004] The purpose of the present invention is to provide a driving hub bearing unit for a new energy vehicle and its rigid bracket to solve the problems raised in the above background art that during the assembly and operation of the driving hub bearing unit of existing new energy vehicles, due to the processing deviations of the assembly process and structure, it is not convenient to maintain the stable quality of the assembly, which in turn affects the sealing effect of the operation of the bearing unit, and it is not convenient for the bearing unit to perform axial and radial stable support.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A driving hub bearing unit for a new energy vehicle, including a first seal regulation component, a rotary circulation component, and a second seal regulation component. The rotary circulation component is installed at the front end of the first seal regulation component, and the second seal regulation component is installed inside the front end of the rotary circulation component. The first seal regulation component includes a first bearing cover, a transmission positioning seat is rotatably connected inside the first bearing cover, and a first thrust ball bearing is installed on the front end face of the transmission positioning seat; The rotary circulation component includes a rotary support seat. A plurality of return channels are provided in the middle of the rotary support seat. Two rotary bearings are installed on the outside of the rotary support seat. Limit pressing rings are fixedly installed at both ends of the rotary support seat. A plurality of liquid outlets are provided inside one of the limit pressing rings, and a plurality of liquid inlets are provided inside the other limit pressing ring; The second sealing control assembly includes a transmission holding seat, with a plurality of centrifugal paddles fixedly arranged at the front end of the transmission holding seat. A second thrust ball bearing is installed outside the transmission holding seat. A sealing cover is installed on the rear end face of the second thrust ball bearing. A plurality of pressing arc strips are installed inside the sealing cover, and a second sealing ring is installed inside the plurality of pressing arc strips.

[0006] Preferably, the first sealing control assembly further includes two limiting angle plates fixedly connected to the rear end of the first bearing cover. A limiting spacer ring is fixedly installed at the front end of the first bearing cover. A first sealing ring is arranged inside the first thrust ball bearing. An adjusting pressure ring is installed on the rear end face of the first sealing ring, and a plurality of first adjusting knobs are installed inside the adjusting pressure ring.

[0007] Preferably, the rotary circulation assembly further includes a bearing limiting ring connected to the outside of the two rotary bearings. A second bearing cover is fixedly installed on the outside of the bearing limiting ring. The rotary support seat is rotatably connected to the bearing limiting ring through the two rotary bearings. The two rotary bearings and the limiting pressure ring are symmetrically installed relative to the bearing limiting ring. A grease injection chamber is arranged between the rotary support seat and the bearing limiting ring, and the grease injection chamber is connected in through - connection with a plurality of liquid outlets and liquid inlets.

[0008] Preferably, the second sealing control assembly further includes a second adjusting knob connected to the middle of the pressing arc strips. The transmission holding seat is rotatably connected to the sealing cover through the second thrust ball bearing. The plurality of pressing arc strips are arranged in a circular pattern relative to the axis of the second sealing ring. The sealing cover is slidably connected to the plurality of pressing arc strips. One end of the second adjusting knob penetrates through the sealing cover and is threadedly connected to the pressing arc strip. The sealing cover is rotatably connected to the plurality of second adjusting knobs.

[0009] Preferably, a transmission connection assembly is installed inside the second sealing control assembly. The transmission connection assembly includes a central transmission rod, with a limiting disc installed at the front end of the central transmission rod. A hub installation disc is installed outside the limiting disc. A plurality of positioning chutes are arranged in the middle of the front end face of the hub installation disc. A positioning insert is slidably connected inside the positioning chute. A plurality of hub installation screws are installed inside the side of the hub installation disc.

[0010] Preferably, the rear end of the transmission positioning seat is rotatably connected to the two limiting angle plates. The first bearing cover is rotatably connected to the transmission positioning seat. The first bearing cover is fixedly connected to the second bearing cover through the limiting spacer ring. The limiting spacer ring is rotatably connected to the adjusting pressure ring through the first sealing ring. The front ends of the plurality of first adjusting knobs penetrate through the transmission positioning seat and are in fitting contact with the rear end face of the adjusting pressure ring. The transmission positioning seat is threadedly connected to the plurality of first adjusting knobs.

[0011] Preferably, the front end of the second bearing cover is fixedly connected to the plugging cover, a sealing ring is provided between the front end of the second bearing cover and the plugging cover, flow chambers are provided between both ends of the slewing support seat and the limiting spacer ring and the plugging cover, the grease injection chamber and the two flow chambers are respectively connected through a plurality of liquid outlets and liquid inlets, and the two flow chambers are connected through a plurality of return channels. The plurality of liquid outlets, liquid inlets and return channels are all arranged in a circumferential pattern relative to the axis of the slewing support seat.

[0012] Preferably, the front end of the central drive rod penetrates through the drive positioning seat, the slewing support seat and the drive holding seat and is inserted into the inner side of the middle part of the hub mounting disc. The front end of the central drive rod is threadedly connected to the limiting disc. The plurality of positioning strips are arranged in a circumferential pattern relative to the hub mounting disc. One end of the positioning strip is inserted into the inner side of the front end of the drive holding seat. The front end of the drive holding seat and the central drive rod are snap-fitted and installed through a plurality of positioning strips. The central drive rod is fixedly connected to the drive positioning seat and the slewing support seat.

[0013] Preferably, the drive holding seat and a plurality of centrifugal paddles arranged in a circumferential pattern are integrally machined. The rear end of the hub mounting disc is rotatably connected to a plurality of pressing arc strips through a second sealing ring.

[0014] A rigid bracket for a driving hub bearing unit of a new energy vehicle, comprising a rigid connection assembly. The rigid connection assembly is connected to the outside of the driving hub bearing unit of the new energy vehicle. The rigid connection assembly includes a rigid mounting seat. A drive mounting seat is installed in the middle of the rear end of the rigid mounting seat. A drive shaft is rotatably connected to the inner side of the drive mounting seat. An upper connecting rod is rotatably connected to the upper end of the rigid mounting seat. A three-fork arm is rotatably connected to the bottom end of the rigid mounting seat. Two spring damping brackets are rotatably connected to the middle of the three-fork arm. The two spring damping brackets are symmetrically installed relative to the drive shaft. The rigid mounting seat is fixedly connected to a limiting angle plate, a first bearing cover and a second bearing cover. The drive mounting seat is fixedly connected to a drive positioning seat. The rear end of the central drive rod is inserted between the drive mounting seat and the drive positioning seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, the drive shaft drives the drive positioning seat and the central drive rod to rotate synchronously through the drive mounting seat, so that the limiting spacer ring can axially support the drive positioning seat through the first thrust ball bearing, and keep the rotation stability of the rear end of the central drive rod under the support of the first bearing cover. When the central drive rod drives a plurality of centrifugal paddles to rotate synchronously through the drive holding seat, the plugging cover in a fixed state can axially support the drive holding seat through the second thrust ball bearing, thereby facilitating the rotation stability of the front end of the central drive rod. 2. The present invention can achieve the quick disassembly and assembly among the central drive rod, the drive holding seat and the hub mounting disc by separating and installing the limit disc and the central drive rod. Moreover, the limit disc is located between the hub mounting disc and the vehicle hub, avoiding the structural looseness caused by the thread slipping. Multiple centrifugal paddles can perform rotational centrifugal operation on the grease located between the slewing support seat and the plug cover, realizing the circulating flow of the lubricating grease, improving the rotational stability of each structure during the operation of the bearing unit, and reducing the wear degree. 3. When the first adjustment knob rotates, it drives the adjustment of the distance between the adjustment pressing ring and the limit spacer ring, thereby realizing the pressing of the first sealing ring by the adjustment pressing ring to different degrees and maintaining the sealing stability between the drive positioning seat and the limit spacer ring. When the second adjustment knob rotates, it drives the sliding adjustment of the pressing arc strip between the plug cover and the hub mounting disc, realizing the pressing of the second sealing ring by the pressing arc strip to different degrees and maintaining the sealing effect between the drive holding seat and the hub mounting disc and the plug cover during rotation. By automatically adjusting the sealing effects of the first sealing ring and the second sealing ring, stable sealing under different assembly errors and operating conditions can be satisfied. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the bearing unit of the present invention; Figure 2 is a schematic cross-sectional structural diagram of the bearing unit of the present invention; Figure 3 is an exploded structural diagram of the bearing unit of the present invention; Figure 4 is a schematic cross-sectional structural diagram of the first sealing regulation assembly of the present invention; Figure 5 is an exploded structural diagram of the first sealing regulation assembly of the present invention; Figure 6 is a schematic cross-sectional structural diagram of the rotary circulation assembly of the present invention; Figure 7 is a schematic cross-sectional structural diagram of the drive connection assembly of the present invention; Figure 8 is an exploded structural diagram of the drive connection assembly of the present invention; Figure 9 is an exploded structural diagram of the second sealing regulation assembly of the present invention; Figure 10 is a schematic structural diagram of the whole of the present invention; Figure 11 is a schematic installation structural diagram of the bearing unit of the present invention.

[0017] In the figure: 1. First sealing and regulating component; 101. Limit angle plate; 102. First bearing cover; 103. Limit spacer ring; 104. Transmission positioning seat; 105. First thrust ball bearing; 106. Adjusting pressure ring; 107. First sealing ring; 108. First adjusting knob; 2. Rotary circulation component; 201. Second bearing cover; 202. Rotary support seat; 203. Bearing limit ring; 204. Rotary bearing; 205. Limit pressure ring; 206. Liquid outlet; 207. Liquid inlet; 208. Return channel; 3. Transmission connection component; 301. Central transmission rod; 302. Hub mounting disc; 303. Hub mounting screw; 304. Limit disc; 305. Positioning insert; 306. Positioning chute; 4. Second sealing and regulating component; 401. Plugging cover; 402. Transmission holding seat; 403. Centrifugal deflector; 404. Second adjusting knob; 405. Second thrust ball bearing; 406. Pressing arc bar; 407. Second sealing ring; 5. Rigid connection component; 501. Rigid mounting seat; 502. Transmission shaft; 503. Upper connecting rod; 504. Trifurcated arm; 505. Spring shock absorber bracket; 506. Transmission mounting seat. Specific implementation manner

[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] Please refer to Figures 1 to 5 , an embodiment provided by the present invention: A driving hub bearing unit and its rigid bracket for a new energy vehicle, including a first sealing and regulating component 1, a rotary circulation component 2, and a second sealing and regulating component 4. The first sealing and regulating component 1 includes a first bearing cover 102. The inner side of the first bearing cover 102 is rotatably connected to a transmission positioning seat 104. The first bearing cover 102 is rotatably connected to the transmission positioning seat 104. The front end face of the transmission positioning seat 104 is provided with a first thrust ball bearing 105. Two limit angle plates 101 are fixedly installed at the rear end of the first bearing cover 102. The rear end of the transmission positioning seat 104 is rotatably connected to the two limit angle plates 101. A limit spacer ring 103 is fixedly installed at the front end of the first bearing cover 102. The limit spacer ring 103 can axially support the transmission positioning seat 104 through the first thrust ball bearing 105, and keep the rear end of the central transmission rod 301 rotating stably under the support of the first bearing cover 102; On the inner side of the first thrust ball bearing 105, there is a first sealing ring 107. An adjusting pressure ring 106 is installed on the rear end face of the first sealing ring 107. The limit spacer ring 103 and the adjusting pressure ring 106 are rotationally connected through the first sealing ring 107. On the inner side of the adjusting pressure ring 106, a plurality of first adjusting knobs 108 are installed. The front ends of the plurality of first adjusting knobs 108 penetrate through the transmission positioning seat 104 and are in close contact with the rear end face of the adjusting pressure ring 106. The transmission positioning seat 104 and the plurality of first adjusting knobs 108 are connected by threads. When the first adjusting knob 108 rotates, it drives the adjustment of the distance between the adjusting pressure ring 106 and the limit spacer ring 103, thereby realizing different degrees of pressing of the adjusting pressure ring 106 on the first sealing ring 107 and maintaining the sealing stability between the transmission positioning seat 104 and the limit spacer ring 103.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 , at the front end of the first sealing and regulating assembly 1, a rotary circulation assembly 2 is installed. The rotary circulation assembly 2 includes a rotary support seat 202. In the middle of the rotary support seat 202, a plurality of return channels 208 are provided. On the outer side of the rotary support seat 202, two rotary bearings 204 are installed. On the outer sides of the two rotary bearings 204, a bearing limit ring 203 is installed. On the outer side of the bearing limit ring 203, a second bearing cover 201 is fixedly installed. The first bearing cover 102 and the second bearing cover 201 are fixedly connected through the limit spacer ring 103. At both ends of the rotary support seat 202, limit pressure rings 205 are fixedly installed. On the inner side of one of the limit pressure rings 205, a plurality of liquid outlets 206 are provided. On the inner side of the other limit pressure ring 205, a plurality of liquid inlets 207 are provided. The rotary support seat 202 and the bearing limit ring 203 are rotationally connected through two rotary bearings 204. The two rotary bearings 204 and the limit pressure rings 205 are symmetrically installed relative to the bearing limit ring 203. A grease injection chamber is provided between the rotary support seat 202 and the bearing limit ring 203. The grease injection chamber is in through connection with the plurality of liquid outlets 206 and liquid inlets 207, realizing the radial support stability of the two rotary bearings 204 to maintain the central drive rod 301 through the rotary support seat 202 and the bearing limit ring 203 for the second bearing cover 201.

[0021] Please refer to Figure 2 , Figure 3 , Figure 8 and Figure 9, a second sealing and regulating assembly 4 is installed inside the front end of the rotary cycle assembly 2. The second sealing and regulating assembly 4 includes a transmission retaining seat 402. A plurality of centrifugal paddles 403 are fixedly provided at the front end of the transmission retaining seat 402. The transmission retaining seat 402 and the plurality of circumferentially arranged centrifugal paddles 403 are integrally machined. A second thrust ball bearing 405 is installed outside the transmission retaining seat 402. A sealing cover 401 is installed on the rear end face of the second thrust ball bearing 405. The front end of the second bearing cover 201 is fixedly connected to the sealing cover 401. A sealing ring is provided between the front end of the second bearing cover 201 and the sealing cover 401. A plurality of pressing arc strips 406 are installed inside the sealing cover 401. A second sealing ring 407 is installed inside the plurality of pressing arc strips 406. A second adjusting knob 404 is installed in the middle of the pressing arc strip 406. The transmission retaining seat 402 and the sealing cover 401 are rotationally connected through the second thrust ball bearing 405. The plurality of pressing arc strips 406 are circumferentially arranged relative to the axis of the second sealing ring 407. The sealing cover 401 is slidably connected to the plurality of pressing arc strips 406. One end of the second adjusting knob 404 penetrates the sealing cover 401 and is threadedly connected to the pressing arc strip 406. The sealing cover 401 is rotationally connected to the plurality of second adjusting knobs 404. When the second adjusting knob 404 rotates, it drives the pressing arc strip 406 to slide and adjust between the sealing cover 401 and the hub mounting disc 302, so as to realize different degrees of pressing of the pressing arc strip 406 on the second sealing ring 407.

[0022] Please refer to Figure 2 , Figure 3 and Figure 7, a drive connection assembly 3 is installed inside the second seal control assembly 4. The drive connection assembly 3 includes a central drive rod 301. A limit disk 304 is installed at the front end of the central drive rod 301. A hub mounting disk 302 is installed outside the limit disk 304. The rear end of the hub mounting disk 302 is rotatably connected to a plurality of pressing arc strips 406 through a second seal ring 407. In the middle of the front end face of the hub mounting disk 302, there are a plurality of positioning chutes 306. A positioning insert 305 is slidably connected inside the positioning chute 306. A plurality of hub mounting screws 303 are installed inside the side of the hub mounting disk 302. The front end of the central drive rod 301 passes through the drive positioning seat 104, the slewing support seat 202, and the drive retaining seat 402 and is inserted into the inside of the middle of the hub mounting disk 302. The front end of the central drive rod 301 is threadedly connected to the limit disk 304. The plurality of positioning inserts 305 are arranged in a circular pattern relative to the hub mounting disk 302. One end of the positioning insert 305 is inserted into the inside of the front end of the drive retaining seat 402. The front end of the drive retaining seat 402 is snap-fitted and installed with the central drive rod 301 through a plurality of positioning inserts 305. The central drive rod 301 is fixedly connected to the drive positioning seat 104 and the slewing support seat 202. By separating and installing between the limit disk 304 and the central drive rod 301, the quick disassembly and assembly between the central drive rod 301, the drive retaining seat 402, and the hub mounting disk 302 can be realized. And the limit disk 304 is located between the hub mounting disk 302 and the vehicle hub, avoiding the loosening of the structure caused by the thread slipping.

[0023] Please refer to Figure 2 and Figure 6 , flow chambers are provided between the two ends of the slewing support seat 202 and the limit spacer ring 103 and the plug cover 401 respectively. The grease injection chamber and the two flow chambers are respectively connected through a plurality of liquid outlets 206 and liquid inlets 207. The two flow chambers are connected through a plurality of return channels 208. The plurality of liquid outlets 206, liquid inlets 207, and return channels 208 are all arranged in a circular pattern relative to the axis of the slewing support seat 202. A plurality of centrifugal paddles 403 can perform a rotational centrifugal operation on the grease located between the slewing support seat 202 and the plug cover 401, realizing the circulating flow of the lubricating grease and improving the rotational stability of each structure during the operation of the bearing unit.

[0024] Please refer to Figure 10 and Figure 11, a rigid bracket for the above-mentioned drive wheel hub bearing unit of a new energy vehicle, includes a rigid connection assembly 5, which is connected to the outside of the drive wheel hub bearing unit of the new energy vehicle. The rigid connection assembly 5 includes a rigid mounting base 501. In the middle of the rear end of the rigid mounting base 501, a transmission mounting base 506 is installed. A transmission shaft 502 is rotatably connected to the inner side of the transmission mounting base 506. An upper connecting rod 503 is rotatably connected to the upper end of the rigid mounting base 501. A three-fork arm 504 is rotatably connected to the bottom end of the rigid mounting base 501. Two spring damping brackets 505 are rotatably connected to the middle of the three-fork arm 504. The two spring damping brackets 505 are symmetrically installed with respect to the transmission shaft 502. The rigid mounting base 501 is fixedly connected to the limit angle plate 101, the first bearing cover 102 and the second bearing cover 201. The transmission mounting base 506 is fixedly connected to the transmission positioning seat 104. The rear end of the central transmission rod 301 is inserted between the transmission mounting base 506 and the transmission positioning seat 104.

[0025] During use, when assembling the drive wheel hub bearing unit of a new energy vehicle, connect the rigid connection assembly 5 to the chassis of the new energy vehicle, and then insert the first bearing cover 102, the limit spacer ring 103 and the second bearing cover 201 into the inner side of the rigid mounting base 501 in sequence and fixedly connect them to the rigid mounting base 501. Place the second sealing and regulating assembly 4 at the front end of the rotary circulation assembly 2, so that the front end of the second bearing cover 201 is fixedly connected to the plugging cover 401. Then, the rear end of the wheel hub mounting disc 302 penetrates through the plugging cover 401 and the second sealing ring 407 and is inserted into the inner side of the transmission retaining seat 402. At the same time, the front end of the central transmission rod 301 penetrates through the transmission positioning seat 104, the rotary support seat 202 and the transmission retaining seat 402 and is threadedly connected to the limit disc 304; Fix the central transmission rod 301 to the transmission positioning seat 104, the rotary support seat 202 and the transmission retaining seat 402. One end of multiple positioning strips 305 is inserted into the inner side of the front end of the transmission retaining seat 402. Thus, the transmission retaining seat 402 and the wheel hub mounting disc 302 are snap-fitted and installed through multiple positioning strips 305. The limit disc 304 limits and installs the multiple positioning strips 305 to facilitate maintaining the fixed connection between the central transmission rod 301 and the wheel hub mounting disc 302 through the transmission retaining seat 402 and multiple positioning strips 305. Attach the front end face of the drive wheel hub to the wheel hub mounting disc 302 and fix them through multiple wheel hub mounting screws 303; When the driving hub is rotatably supported, the transmission shaft 502 synchronously drives the transmission positioning seat 104 and the center transmission rod 301 to rotate through the transmission mounting seat 506. A first thrust ball bearing 105 is installed between the transmission positioning seat 104 and the limiting spacer 103, so that the limiting spacer 103 can axially support the transmission positioning seat 104 through the first thrust ball bearing 105, and keep the rear end of the center transmission rod 301 stable in rotation under the support of the first bearing cover 102. At the same time, a rotation sealing operation is performed between the first bearing cover 102 and the limiting spacer 103 through the first sealing ring 107; Flow bins are provided between the two ends of the slewing support seat 202 and the limiting spacer ring 103 and the sealing cover 401, and a grease injection bin is provided between the slewing support seat 202 and the bearing limiting spacer ring 203. The grease injection bin is connected to the two flow bins through a plurality of liquid outlets 206 and a liquid inlet 207, and the two flow bins are connected through a plurality of reflux channels 208. When the central transmission rod 301 drives the plurality of centrifugal paddles 403 to rotate synchronously through the transmission retaining seat 402, the plurality of centrifugal paddles 403 can perform a rotational centrifugal operation on the grease between the slewing support seat 202 and the sealing cover 401, and then the grease enters the grease injection bin through the liquid inlet 207 and is transported to the spacer ring 103 between the slewing support seat 202 through the liquid outlet 206, and then refluxes through the plurality of reflux channels 208, thereby realizing the circulation of the lubricating grease, improving the rotation stability of each structure during the operation of the bearing unit, and reducing the degree of wear. The slewing bearing 204 can be limited by two limiting pressure rings 205, so that the two slewing bearings 204 can maintain the radial support of the central transmission rod 301 to the second bearing cover 201 through the slewing support seat 202 and the bearing limiting ring 203. A second thrust ball bearing 405 is provided between the transmission retaining seat 402 and the blocking cover 401, so that the blocking cover 401 in a fixed state can axially support the transmission retaining seat 402 through the second thrust ball bearing 405, thereby facilitating the rotation stability of the front end of the central transmission rod 301. The side of the limiting plate 304 is in close contact with multiple positioning strips 305, so that the central transmission rod 301, the transmission retaining seat 402 and the hub mounting plate 302 can be quickly disassembled and assembled by separating and installing the limiting plate 304 and the central transmission rod 301, and the limiting plate 304 is located between the hub mounting plate 302 and the automobile wheel hub to avoid structural loosening caused by thread slippage.

[0026] The front ends of multiple first adjusting knobs 108 penetrate through the transmission positioning seat 104 and are in close contact with the rear end face of the adjusting pressure ring 106. The transmission positioning seat 104 is threadedly connected to the multiple first adjusting knobs 108, so that when the first adjusting knobs 108 rotate, the distance between the adjusting pressure ring 106 and the limit spacer ring 103 is adjusted, thereby realizing different degrees of pressing of the adjusting pressure ring 106 on the first sealing ring 107 and maintaining the sealing stability between the transmission positioning seat 104 and the limit spacer ring 103; One end of multiple second adjusting knobs 404 penetrates through the plugging cover 401 and is threadedly connected to the pressing arc bar 406. When the second adjusting knobs 404 rotate, the pressing arc bar 406 is driven to slide and adjust between the plugging cover 401 and the hub mounting disc 302, realizing different degrees of pressing of the pressing arc bar 406 on the second sealing ring 407 and maintaining the sealing effect between the transmission holding seat 402 and the hub mounting disc 302 when rotating with the plugging cover 401. By automatically adjusting the sealing effects of the first sealing ring 107 and the second sealing ring 407, stable sealing under different assembly errors and operating conditions can be satisfied.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. 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 claimed rights.

Claims

1. A new energy vehicle drive wheel hub bearing unit, comprising a first sealing and regulating component (1), a rotary circulation component (2) and a second sealing and regulating component (4), characterized in that: A rotary circulation component (2) is installed at the front end of the first sealing and regulating component (1), and a second sealing and regulating component (4) is installed on the inner side of the front end of the rotary circulation component (2). The first sealing and regulating component (1) comprises a first bearing cover (102), and a transmission positioning seat (104) is rotatably connected to the inner side of the first bearing cover (102), and a first thrust ball bearing (105) is installed on the front end surface of the transmission positioning seat (104); The rotary circulation component (2) comprises a rotary support seat (202), a plurality of reflux channels (208) are provided in the middle of the rotary support seat (202), two rotary bearings (204) are installed on the outer side of the rotary support seat (202), and limiting pressure rings (205) are fixedly installed on both ends of the rotary support seat (202), wherein a plurality of liquid outlets (206) are provided on the inner side of one of the limiting pressure rings (205), and a plurality of liquid inlet ports (207) are provided on the inner side of another limiting pressure ring (205); The second sealing and regulating assembly (4) comprises a transmission retaining seat (402), a plurality of centrifugal paddles (403) being fixedly provided at the front end of the transmission retaining seat (402), a second thrust ball bearing (405) being mounted on the outer side of the transmission retaining seat (402), a sealing cover (401) being mounted on the rear end face of the second thrust ball bearing (405), a plurality of compression arc strips (406) being mounted on the inner side of the sealing cover (401), and a second sealing ring (407) being mounted on the inner side of the plurality of compression arc strips (406).

2. A new energy vehicle drive hub bearing unit according to claim 1, characterized in that: The first sealing and regulating assembly (1) further comprises two limiting angle plates (101) fixedly connected to the rear end of the first bearing cover (102); a limiting spacer ring (103) is fixedly mounted on the front end of the first bearing cover (102); a first sealing ring (107) is arranged on the inner side of the first thrust ball bearing (105); an adjusting pressure ring (106) is mounted on the rear end surface of the first sealing ring (107); and a plurality of first adjusting knobs (108) are mounted on the inner side of the adjusting pressure ring (106).

3. A new energy vehicle drive hub bearing unit according to claim 2, characterized in that: The rotary circulation component (2) further comprises a bearing limit ring (203) connected to the outer sides of the two rotary bearings (204); a second bearing cover (201) is fixedly mounted on the outer sides of the bearing limit ring (203); the rotary support seat (202) and the bearing limit ring (203) are rotatably connected via the two rotary bearings (204); the two rotary bearings (204) and the limit pressure ring (205) are symmetrically mounted relative to the bearing limit ring (203); a grease injection bin is provided between the rotary support seat (202) and the bearing limit ring (203); the grease injection bin is in through-connection with a plurality of liquid outlets (206) and liquid inlets (207).

4. A new energy vehicle drive hub bearing unit according to claim 3, characterized in that: The second sealing control component (4) further comprises a second adjusting knob (404) connected to the middle part of the compression arc strip (406); the transmission retaining seat (402) is rotatably connected to the sealing cover (401) via a second thrust ball bearing (405); a plurality of the compression arc strips (406) are arranged in a circle relative to the axis of the second sealing ring (407); the sealing cover (401) is slidably connected to the plurality of compression arc strips (406); one end of the second adjusting knob (404) passes through the sealing cover (401) and is threadedly connected to the compression arc strip (406); and the sealing cover (401) is rotatably connected to the plurality of second adjusting knobs (404).

5. A new energy vehicle driving wheel hub bearing unit according to claim 4, characterized in that: A transmission connection assembly (3) is installed on the inner side of the second sealing control assembly (4), and the transmission connection assembly (3) comprises a central transmission rod (301), a limiting plate (304) is installed on the front end of the central transmission rod (301), a wheel hub mounting plate (302) is installed on the outer side of the limiting plate (304), a plurality of positioning grooves (306) are provided in the middle of the front end surface of the wheel hub mounting plate (302), a positioning strip (305) is slidably connected to the inner side of the positioning groove (306), and a plurality of wheel hub mounting screws (303) are installed on the inner side of the side of the wheel hub mounting plate (302).

6. A new energy vehicle drive hub bearing unit according to claim 5, characterized in that: The rear end of the transmission positioning seat (104) is rotatably connected to the two limiting angle plates (101); the first bearing cover (102) is rotatably connected to the transmission positioning seat (104); the first bearing cover (102) is fixedly connected to the second bearing cover (201) via a limiting spacer ring (103); the limiting spacer ring (103) is rotatably connected to the adjustment pressure ring (106) via a first sealing ring (107); the front ends of the plurality of first adjustment knobs (108) penetrate the transmission positioning seat (104) and are in close contact with the rear end surface of the adjustment pressure ring (106); and the transmission positioning seat (104) and the plurality of first adjustment knobs (108) are connected via threads.

7. A new energy vehicle drive hub bearing unit according to claim 6, characterized in that: The front end of the second bearing cover (201) is fixedly connected to the sealing cover (401), a sealing ring is provided between the front end of the second bearing cover (201) and the sealing cover (401), and flow bins are provided between the two ends of the slewing support seat (202) and the limiting spacer ring (103) and the sealing cover (401), the grease injection bin is connected to the two flow bins through a plurality of liquid outlets (206) and liquid inlets (207) respectively, the two flow bins are connected through a plurality of reflux channels (208), and the plurality of liquid outlets (206), liquid inlets (207) and reflux channels (208) are arranged in a circle relative to the axis of the slewing support seat (202).

8. The new energy vehicle drive hub bearing unit according to claim 7, characterized in that: The front end of the central transmission rod (301) passes through the transmission positioning seat (104), the slewing support seat (202) and the transmission retaining seat (402) and is plugged into the inner side of the middle part of the wheel hub mounting plate (302); the front end of the central transmission rod (301) is connected to the limiting plate (304) by means of threads; a plurality of positioning inserts (305) are arranged in a circle relative to the wheel hub mounting plate (302); one end of the positioning inserts (305) is plugged into the inner side of the front end of the transmission retaining seat (402); the front end of the transmission retaining seat (402) is clamped and installed with the central transmission rod (301) by means of a plurality of positioning inserts (305); and the central transmission rod (301) is fixedly connected to the transmission positioning seat (104) and the slewing support seat (202).

9. A new energy vehicle drive hub bearing unit according to claim 8, characterized in that: The transmission retaining seat (402) and the plurality of circumferentially arranged centrifugal paddles (403) are integrally machined, and the rear end of the hub mounting plate (302) is rotatably connected to the plurality of compression arc strips (406) via a second sealing ring (407).

10. A rigid bracket for the new energy vehicle driving wheel hub bearing unit according to claim 9, comprising a rigid connection component (5), the rigid connection component (5) being connected to the outer side of the new energy vehicle driving wheel hub bearing unit according to claim 9, characterized in that: The rigid connection assembly (5) comprises a rigid mounting seat (501), a transmission mounting seat (506) is mounted in the middle of the rear end of the rigid mounting seat (501), a transmission shaft (502) is rotatably connected to the inner side of the transmission mounting seat (506), an upper connecting rod (503) is rotatably connected to the upper end of the rigid mounting seat (501), a three-pronged arm (504) is rotatably connected to the bottom end of the rigid mounting seat (501), and the middle part of the three-pronged arm (504) is rotatably connected to two The spring vibration-damping bracket (505) is symmetrically mounted relative to the transmission shaft (502); the rigid mounting seat (501) is fixedly connected to the limiting angle plate (101), the first bearing cover (102) and the second bearing cover (201); the transmission mounting seat (506) is fixedly connected to the transmission positioning seat (104); and the rear end of the central transmission rod (301) is plugged between the transmission mounting seat (506) and the transmission positioning seat (104).

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