A new energy vehicle drive hub bearing unit and its rigid bracket

Abstract

The present invention relates to the field of wheel hub bearing technology, specifically a new energy vehicle drive wheel hub bearing unit and its rigid bracket, which solves the problem that during the assembly and operation of the existing new energy vehicle drive wheel hub bearing unit, due to the processing deviation of the assembly process and structure, it is not easy to maintain the stable quality of the assembly, thereby affecting the sealing effect of the bearing unit operation and making it difficult to provide axial and radial stable support for the bearing unit. The present invention includes a first sealing control component, a rotary circulation component and a second sealing control component, wherein the front end of the first sealing control component is equipped with a rotary circulation component, and the inner side of the front end of the rotary circulation component is equipped with a second sealing control component. The present invention can effectively meet the sealing stability requirements under different assembly levels and operating conditions by automatically adjusting the sealing of the bearing unit, and can effectively provide radial and axial stable support for the wheel hub by arranging multiple bearings.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel hub bearings, and in particular to a new energy vehicle drive wheel hub bearing unit and a rigid bracket thereof. Background Art

[0002] The rigid bracket used for the drive hub bearing unit is a mechanical component used to support and stabilize the drive hub bearing unit. It is usually made of metal material and has a specific geometric shape and structure. Its main function is to provide a stable installation base for the drive hub bearing unit and withstand various forces and vibrations generated by wheel movement and vehicle driving. Among them, the hub bearing is one of the key components of the automobile. Its main function is to bear weight and provide precise guidance for the rotation of the hub, which requires it to withstand not only axial loads but also radial loads.

[0003] During the assembly and operation of the existing drive hub bearing unit of new energy vehicles, it is difficult to maintain stable assembly quality due to the processing deviation of the assembly process and structure, which in turn affects the sealing effect of the bearing unit operation and is not convenient for the bearing unit to provide axial and radial stable support; therefore, it does not meet the existing needs. In this regard, we propose a new energy vehicle drive hub bearing unit and a rigid bracket thereof. Summary of the Invention

[0004] The purpose of the present invention is to provide a new energy vehicle drive hub bearing unit and a rigid bracket thereof, so as to solve the problem raised in the above background technology that during the assembly and operation of the existing new energy vehicle drive hub bearing unit, due to the processing deviation of the assembly process and structure, it is not easy to maintain the stable quality of the assembly, thereby affecting the sealing effect of the bearing unit operation, and it is not easy to provide axial and radial stable support for the bearing unit.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a new energy vehicle drive hub bearing unit, comprising a first sealing and regulating assembly, a rotary circulation assembly, and a second sealing and regulating assembly, wherein the rotary circulation assembly is mounted at the front end of the first sealing and regulating assembly, and the second sealing and regulating assembly is mounted on the inner side of the front end of the rotary circulation assembly, the first sealing and regulating assembly comprising a first bearing housing, the inner side of the first bearing housing being rotatably connected to a transmission locating seat, and the front end surface of the transmission locating seat being mounted with a first thrust ball bearing;

[0006] The rotary circulation assembly includes a rotary support seat, a plurality of reflux channels are provided in the middle of the rotary support seat, two rotary bearings are installed on the outer side of the rotary support seat, and limiting pressure rings are fixedly installed on both ends of the rotary support seat, wherein the inner side of one of the limiting pressure rings is provided with a plurality of liquid outlets, and the inner side of the other limiting pressure ring is provided with a plurality of liquid inlets;

[0007] The second sealing and regulating assembly includes a transmission retaining seat, a plurality of centrifugal paddles are fixedly provided at the front end of the transmission retaining seat, a second thrust ball bearing is installed on the outer side of the transmission retaining seat, a sealing cover is installed on the rear end face of the second thrust ball bearing, a plurality of compression arc strips are installed on the inner side of the sealing cover, and a second sealing ring is installed on the inner side of the plurality of compression arc strips.

[0008] Preferably, the first sealing and control assembly also includes two limiting angle plates fixedly connected to the rear end of the first bearing cover, a limiting spacer ring is fixedly installed on the front end of the first bearing cover, a first sealing ring is provided on the inner side of 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 on the inner side of the adjusting pressure ring.

[0009] Preferably, the rotary circulation component also includes a bearing limit ring connected to the outer sides of the two rotary bearings, a second bearing cover is fixedly installed on the outer side of the bearing limit ring, the rotary support seat and the bearing limit ring are rotatably connected through two rotary bearings, the two rotary bearings and the limit pressure ring are symmetrically installed relative to the bearing limit ring, a grease injection bin is provided between the rotary support seat and the bearing limit ring, and the grease injection bin is through-connected with multiple liquid outlets and liquid inlets.

[0010] Preferably, the second sealing control assembly also includes a second adjusting knob connected to the middle part of the compression arc strip, the transmission retaining seat and the sealing cover are rotatably connected through a second thrust ball bearing, the multiple compression arc strips are circumferentially arranged relative to the axis of the second sealing ring, the sealing cover is slidingly connected to the multiple compression arc strips, one end of the second adjusting knob passes through the sealing cover and is threadedly connected to the compression arc strip, and the sealing cover is rotatably connected to the multiple second adjusting knobs.

[0011] Preferably, a transmission connection assembly is installed on the inner side of the second sealing and regulating assembly, and the transmission connection assembly includes a central transmission rod, a limiting plate is installed on the front end of the central transmission rod, a hub mounting plate is installed on the outer side of the limiting plate, a plurality of positioning grooves are provided in the middle of the front end surface of the hub mounting plate, a positioning strip is slidably connected to the inner side of the positioning groove, and a plurality of hub mounting screws are installed on the inner side of the side of the hub mounting plate.

[0012] 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 a limiting spacer ring, the limiting spacer ring is rotatably connected to the adjustment pressure ring through the first sealing ring, the front ends of the multiple first adjustment knobs pass through the transmission positioning seat and are in contact with the rear end surface of the adjustment pressure ring, and the transmission positioning seat is connected to the multiple first adjustment knobs through threads.

[0013] Preferably, the front end of the second bearing cover is fixedly connected to the sealing cover, a sealing ring is provided between the front end of the second bearing cover and the sealing cover, flow bins are provided between the two ends of the slewing support seat and the limiting spacer and the sealing cover, the grease injection bin is connected to the two flow bins through a plurality of liquid outlets and liquid inlets respectively, the two flow bins are connected through a plurality of reflux channels, and the plurality of liquid outlets, liquid inlets and reflux channels are arranged circumferentially relative to the axis of the slewing support seat.

[0014] Preferably, the front end of the center transmission rod passes through the transmission positioning seat, the slewing support seat and the transmission retaining seat and is inserted into the inner side of the middle part of the wheel hub mounting plate. The front end of the center transmission rod is connected to the limit plate by a threaded connection. The multiple positioning strips are arranged circumferentially relative to the wheel hub mounting plate. One end of the positioning strip is inserted into the inner side of the front end of the transmission retaining seat. The front end of the transmission retaining seat and the center transmission rod are clamped and installed through multiple positioning strips. The center transmission rod is fixedly connected to the transmission positioning seat and the slewing support seat.

[0015] Preferably, the transmission retaining seat and the plurality of circumferentially arranged centrifugal paddles are integrally machined, and the rear end of the hub mounting disc is rotatably connected to the plurality of compression arc strips via a second sealing ring.

[0016] A rigid bracket for a new energy vehicle drive wheel hub bearing unit, comprising a rigid connection component, which is connected to the outer side of the new energy vehicle drive wheel hub bearing unit, the rigid connection component comprising a rigid mounting seat, a transmission mounting seat is installed in the middle of the rear end of the rigid mounting seat, the inner side of the transmission mounting seat is rotatably connected to a transmission shaft, the upper end of the rigid mounting seat is rotatably connected to an upper connecting rod, the bottom end of the rigid mounting seat is rotatably connected to a three-pronged arm, the middle part of the three-pronged arm is rotatably connected to two spring damping brackets, the two spring damping brackets are symmetrically installed relative to the transmission shaft, the rigid mounting seat is fixedly connected to the limiting angle plate, the first bearing cover and the second bearing cover, the transmission mounting seat is fixedly connected to the transmission positioning seat, and the rear end of the central transmission rod is inserted between the transmission mounting seat and the transmission positioning seat.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention synchronously drives the transmission positioning seat and the center transmission rod to rotate via the transmission mounting seat, so that the limiting spacer can axially support the transmission positioning seat via the first thrust ball bearing, thereby maintaining the rotational stability of the rear end of the center transmission rod under the support of the first bearing cover. When the center transmission rod drives the multiple centrifugal paddles to rotate synchronously via the transmission retaining seat, the blocking cover in a fixed state can axially support the transmission retaining seat via the second thrust ball bearing, thereby facilitating the rotational stability of the front end of the center transmission rod.

[0019] 2. The present invention can achieve rapid disassembly and assembly between the center transmission rod, the transmission retaining seat, and the hub mounting plate by separating and installing the limit plate from the center transmission rod. The limit plate is located between the hub mounting plate and the automobile wheel hub, avoiding structural loosening caused by thread stripping. Multiple centrifugal paddles can rotate and centrifuge the grease located between the slewing support seat and the blocking cover to achieve the circulation of the lubricating grease, improve the rotational stability of each structure during the operation of the bearing unit, and reduce the degree of wear.

[0020] 3. The present invention adjusts the distance between the adjustment pressure ring and the limiting spacer ring when the first adjustment knob is rotated, thereby realizing that the adjustment pressure ring presses the first sealing ring to different degrees, and maintains the stable seal between the transmission positioning seat and the limiting spacer ring; when the second adjustment knob is rotated, the compression arc bar is driven to slide and adjust between the sealing cover and the hub mounting disk, thereby realizing that the compression arc bar presses the second sealing ring to different degrees, and maintains the sealing effect between the transmission retaining seat and the hub mounting disk and the sealing cover when they rotate; by automatically adjusting the sealing effect of the first sealing ring and the second sealing ring, stable sealing can be achieved under different assembly errors and operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the bearing unit of the present invention;

[0022] Figure 2 Schematic diagram of the cross-sectional structure of the bearing unit of the present invention;

[0023] Figure 3 Schematic diagram of the exploded structure of the bearing unit of the present invention;

[0024] Figure 4 Schematic diagram of the cross-sectional structure of the first sealing and regulating assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of the explosion structure of the first sealing and regulating assembly of the present invention;

[0026] Figure 6 Schematic diagram of the cross-sectional structure of the rotary circulation component of the present invention;

[0027] Figure 7 Schematic diagram of the cross-sectional structure of the transmission connection assembly of the present invention;

[0028] Figure 8 Schematic diagram of the exploded structure of the transmission connection assembly of the present invention;

[0029] Figure 9 Schematic diagram of the explosion structure of the second sealing and regulating assembly of the present invention;

[0030] Figure 10It is a schematic structural diagram of the present invention as a whole;

[0031] Figure 11 Schematic diagram of the installation structure of the bearing unit of the present invention.

[0032] In the figure: 1. First sealing and regulating assembly; 101. Limiting angle plate; 102. First bearing cover; 103. Limiting 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 assembly; 201. Second bearing cover; 202. Rotary support seat; 203. Bearing limiting ring; 204. Rotary bearing; 205. Limiting pressure ring; 206. Liquid outlet; 207. Liquid inlet; 208. Reflux channel; 3. Transmission connection assembly; 301. Center transmission Rod; 302, wheel hub mounting plate; 303, wheel hub mounting screw; 304, limit plate; 305, positioning strip; 306, positioning slot; 4, second sealing and regulating assembly; 401, blocking cover; 402, transmission retaining seat; 403, centrifugal paddle; 404, second adjusting knob; 405, second thrust ball bearing; 406, clamping arc strip; 407, second sealing ring; 5, rigid connection assembly; 501, rigid mounting seat; 502, transmission shaft; 503, upper connecting rod; 504, three-pronged arm; 505, spring vibration damping bracket; 506, transmission mounting seat. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] See also Figures 1 to 5 , the present invention provides an embodiment: a new energy vehicle drive hub bearing unit and a rigid bracket thereof, comprising 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 comprising 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 surface of the transmission positioning seat 104 is installed with a first thrust ball bearing 105, the rear end of the first bearing cover 102 is fixedly installed with two limiting angle plates 101, the rear end of the transmission positioning seat 104 is rotatably connected to the two limiting angle plates 101, the front end of the first bearing cover 102 is fixedly installed with a limiting spacer 103, 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 central transmission rod 301 rotationally stable under the support of the first bearing cover 102;

[0035] A first sealing ring 107 is provided on the inner side of the first thrust ball bearing 105, and an adjusting pressure ring 106 is installed on the rear end face of the first sealing ring 107. The limiting spacer 103 and the adjusting pressure ring 106 are rotatably connected through the first sealing ring 107. A plurality of first adjusting knobs 108 are installed on the inner side of the adjusting pressure ring 106. The front ends of the plurality of first adjusting knobs 108 pass through the transmission positioning seat 104 and are in 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, the spacing between the adjusting pressure ring 106 and the limiting spacer 103 is driven to adjust, thereby realizing that the adjusting pressure ring 106 presses the first sealing ring 107 to different degrees, thereby maintaining a stable seal between the transmission positioning seat 104 and the limiting spacer 103.

[0036] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 6 The front end of the first sealing and regulating component 1 is equipped with a rotary circulation component 2, which includes 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 outside of the rotary support seat 202. A bearing limiting ring 203 is installed on the outside of the two rotary bearings 204. A second bearing cover 201 is fixedly installed on the outside of the bearing limiting ring 203. The first bearing cover 102 and the second bearing cover 201 are fixedly connected by a limiting spacer ring 103. Limiting pressure rings 205 are fixedly installed on both ends of the rotary support seat 202. The inner of one of the limiting pressure rings 205 is fixedly mounted on the outer side of the rotary support seat 202. There are multiple liquid outlets 206 on the side, and multiple liquid inlets 207 are provided on the inner side of another limiting pressure ring 205. The slewing support seat 202 and the bearing limiting ring 203 are rotatably connected through two slewing bearings 204. The two slewing bearings 204 and the limiting pressure ring 205 are symmetrically installed relative to the bearing limiting ring 203. A grease injection bin is provided between the slewing support seat 202 and the bearing limiting ring 203. The grease injection bin is through-connected with the multiple liquid outlets 206 and the liquid inlet 207, so that the two slewing bearings 204 can maintain the radial support stability of the central transmission rod 301 on the second bearing cover 201 through the slewing support seat 202 and the bearing limiting ring 203.

[0037] See also Figure 2 、 Figure 3 、 Figure 8 and Figure 9A second sealing and regulating component 4 is installed on the inner side of the front end of the rotary circulation component 2. The second sealing and regulating component 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 centrifugal paddles 403 arranged in a circumferential manner are machined as an integral part. A second thrust ball bearing 405 is installed on the outer side of 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 compression arc strips 406 are installed on the inner side of the sealing cover 401. A second The sealing ring 407 and the middle part of the compression arc strip 406 are provided with a second adjusting knob 404. The transmission retaining seat 402 is rotatably connected to the sealing cover 401 through the second thrust ball bearing 405. The plurality of compression arc strips 406 are arranged in a circle relative to the axis of the second sealing ring 407. The sealing cover 401 is slidingly 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. The sealing cover 401 is rotatably connected to the plurality of second adjusting knobs 404. When the second adjusting knob 404 rotates, it drives the compression arc strip 406 to slide and adjust between the sealing cover 401 and the hub mounting disk 302, so that the compression arc strip 406 can compress the second sealing ring 407 to different degrees.

[0038] See also Figure 2 、 Figure 3 and Figure 7The transmission connection assembly 3 is installed on the inner side of the second sealing and regulating assembly 4. The transmission connection assembly 3 includes a central transmission rod 301. A limit plate 304 is installed at the front end of the central transmission rod 301. A hub mounting plate 302 is installed on the outer side of the limit plate 304. The rear end of the hub mounting plate 302 is rotatably connected to a plurality of compression arc strips 406 through a second sealing ring 407. A plurality of positioning grooves 306 are provided in the middle of the front end surface of the hub mounting plate 302. A positioning insert 305 is slidably connected to the inner side of the positioning groove 306. A plurality of hub mounting screws 303 are installed on the inner side of the side of the hub mounting plate 302. The front end of the central transmission rod 301 passes through the transmission positioning seat 104, the rotary support seat 202 and the transmission retaining seat 402 and is plugged into the inner side of the middle of the hub mounting plate 302. The front end of the center transmission rod 301 is connected to the limit plate 304 by a threaded connection, and multiple positioning strips 305 are arranged in a circle relative to the wheel hub mounting plate 302. One end of the positioning strip 305 is inserted 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 center transmission rod 301 through multiple positioning strips 305. The center transmission rod 301 is fixedly connected to the transmission positioning seat 104 and the rotary support seat 202. By separating and installing the limiting disc 304 from the center transmission rod 301, the center transmission rod 301, the transmission retaining seat 402 and the wheel hub mounting plate 302 can be quickly disassembled and assembled, and the limiting disc 304 is located between the wheel hub mounting plate 302 and the automobile wheel hub to avoid structural loosening caused by thread slippage.

[0039] See also Figure 2 and Figure 6 Flow bins are provided between the two ends of the rotary support seat 202 and the limit spacer 103 and the blocking cover 401. The grease injection bin is connected to the two flow bins through multiple liquid outlets 206 and liquid inlets 207 respectively. The two flow bins are connected through multiple reflux channels 208. The multiple liquid outlets 206, liquid inlets 207 and reflux channels 208 are all arranged in a circle relative to the axis of the rotary support seat 202. The multiple centrifugal paddles 403 can perform a rotational centrifugal operation on the grease located between the rotary support seat 202 and the blocking cover 401, thereby realizing the circulation of the lubricating grease and improving the rotation stability of each structure during the operation of the bearing unit.

[0040] See also Figure 10 and Figure 11The rigid bracket for the above-mentioned new energy vehicle drive hub bearing unit includes a rigid connection component 5, which is connected to the outer side of the above-mentioned new energy vehicle drive hub bearing unit. The rigid connection component 5 includes a rigid mounting seat 501, and a transmission mounting seat 506 is installed in the middle of the rear end of the rigid mounting seat 501. The inner side of the transmission mounting seat 506 is rotatably connected to the transmission shaft 502, and the upper end of the rigid mounting seat 501 is rotatably connected to the upper connecting rod 503. The bottom end of the rigid mounting seat 501 is rotatably connected to the three-pronged arm 504. The middle part of the three-pronged arm 504 is rotatably connected to two spring vibration damping brackets 505. The two spring vibration damping brackets 505 are symmetrically installed 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 inserted between the transmission mounting seat 506 and the transmission positioning seat 104.

[0041] During use, when assembling the driving hub bearing unit of the new energy vehicle, the rigid connection component 5 is connected to the chassis of the new energy vehicle, and then the first bearing cover 102, the limiting spacer 103 and the second bearing cover 201 are sequentially plugged into the inner side of the rigid mounting seat 501 and fixedly connected to the rigid mounting seat 501, and the second sealing control component 4 is placed at the front end of the rotary circulation component 2, so that the front end of the second bearing cover 201 is fixedly connected to the blocking cover 401, and then the rear end of the hub mounting plate 302 passes through the blocking cover 401 and the second sealing ring 407 and is plugged into the inner side of the transmission retaining seat 402, and at the same time, the front end of the central transmission rod 301 passes through the transmission positioning seat 104, the rotary support seat 202 and the transmission retaining seat 402 and is threadedly connected to the limiting plate 304;

[0042] The center transmission rod 301 is fixedly connected to the transmission positioning seat 104, the slewing support seat 202 and the transmission holding seat 402, one end of the plurality of positioning strips 305 is inserted into the inner side of the front end of the transmission holding seat 402, and then the transmission holding seat 402 is clamped and installed with the hub mounting plate 302 through the plurality of positioning strips 305. The limiting plate 304 limits the plurality of positioning strips 305 for installation to facilitate the maintenance of the center transmission rod 301 and the hub mounting plate 302 fixedly connected through the transmission holding seat 402 and the plurality of positioning strips 305. The driving wheel hub is attached to the front end surface of the hub mounting plate 302 and fixedly connected to the hub mounting plate 302 through a plurality of hub mounting screws 303.

[0043] When the driving hub is rotatably supported, the transmission shaft 502 synchronously drives the transmission positioning seat 104 and the central 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, thereby maintaining the rotation stability of the rear end of the central transmission rod 301 under the support of the first bearing cover 102. At the same time, a first sealing ring 107 is used to perform a rotational sealing operation between the first bearing cover 102 and the limiting spacer 103.

[0044] Flow bins are provided between the two ends of the rotary support seat 202 and the limiting spacer ring 103 and the blocking cover 401, and a grease injection bin is provided between the rotary support seat 202 and the bearing limiting ring 203. The grease injection bin and the two flow bins are connected through multiple liquid outlets 206 and liquid inlet 207, and the two flow bins are connected through multiple reflux channels 208. When the central transmission rod 301 drives the multiple centrifugal paddles 403 to rotate synchronously through the transmission retaining seat 402, the multiple centrifugal paddles 403 can perform a rotational centrifugal operation on the grease between the rotary support seat 202 and the blocking cover 401, and then the grease enters the grease injection bin through the liquid inlet 207 and is transported to between the rotary support seat 202 and the limiting spacer ring 103 through the liquid outlet 206, and then refluxes through the multiple 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;

[0045] The two limiting pressure rings 205 can limit the slewing bearing 204, so that the two slewing bearings 204 can maintain the radial support of the center transmission rod 301 on the second bearing cover 201 through the slewing support seat 202 and the bearing limiting ring 203, and 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 center transmission rod 301. The side edge of the limiting plate 304 is in contact with multiple positioning strips 305, so that the center transmission rod 301, the transmission retaining seat 402 and the wheel hub mounting plate 302 can be quickly disassembled and assembled by separating and installing the limiting plate 304 from the center transmission rod 301, and the limiting plate 304 is located between the wheel hub mounting plate 302 and the automobile wheel hub, avoiding the loosening of the structure caused by thread slippage.

[0046] The front ends of the plurality of first adjusting knobs 108 pass through the transmission positioning seat 104 and are in contact with the rear end surface of the adjusting pressure ring 106. The transmission positioning seat 104 and the plurality of first adjusting knobs 108 are connected by threads, so that when the first adjusting knobs 108 rotate, the spacing between the adjusting pressure ring 106 and the limiting spacer ring 103 is adjusted, thereby achieving different degrees of compression of the first sealing ring 107 by the adjusting pressure ring 106, thereby maintaining a stable seal between the transmission positioning seat 104 and the limiting spacer ring 103;

[0047] One end of multiple second adjustment knobs 404 passes through the sealing cover 401 and is connected to the compression arc strip 406 by a thread. When the second adjustment knob 404 rotates, the compression arc strip 406 is driven to slide and adjust between the sealing cover 401 and the hub mounting disk 302, so that the compression arc strip 406 can press the second sealing ring 407 to different degrees, maintaining the sealing effect between the transmission retaining seat 402 and the hub mounting disk 302 and the sealing cover 401 when they rotate. By automatically adjusting the sealing effect of the first sealing ring 107 and the second sealing ring 407, stable sealing can be achieved under different assembly errors and operating conditions.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A new energy vehicle drive 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: The front end of the first sealing and regulating component (1) is installed with a rotary circulation component (2), the inner side of the front end of the rotary circulation component (2) is installed with a second sealing and regulating component (4), the first sealing and regulating component (1) comprises a first bearing cover (102), the inner side of the first bearing cover (102) is rotatably connected to a transmission positioning seat (104), and the front end surface of the transmission positioning seat (104) is installed with a first thrust ball bearing (105); 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 the inner side of one of the limiting pressure rings (205) is provided with a plurality of liquid outlets (206), and the inner side of the other limiting pressure ring (205) is provided with a plurality of liquid inlet ports (207); The second sealing and regulating assembly (4) comprises a transmission retaining seat (402), a plurality of centrifugal paddles (403) are fixedly provided at the front end of the transmission retaining seat (402), a second thrust ball bearing (405) is installed on the outer side of the transmission retaining seat (402), a sealing cover (401) is installed on the rear end face of the second thrust ball bearing (405), a plurality of compression arc strips (406) are installed on the inner side of the sealing cover (401), and a second sealing ring (407) is installed on the inner side of the plurality of compression arc strips (406); 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 installed at the front end of the first bearing cover (102); a first sealing ring (107) is provided on the inner side of the first thrust ball bearing (105); an adjusting pressure ring (106) is installed on the rear end face of the first sealing ring (107); a plurality of first adjusting knobs (108) are installed on the inner side of the adjusting pressure ring (106); the limiting spacer ring (103) can axially support the transmission positioning seat (104) through the first thrust ball bearing (105), so as to keep the rear end of the central transmission rod (301) stable in rotation under the support of the first bearing cover (102); and a rotary sealing operation is performed between the first bearing cover (102) and the limiting spacer ring (103) through the first sealing ring (107).

2. The new energy vehicle drive hub bearing unit according to claim 1, characterized in that: The rotary circulation component (2) further comprises a bearing limiting 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 limiting ring (203); the rotary support seat (202) and the bearing limiting ring (203) are rotatably connected via the two rotary bearings (204); the two rotary bearings (204) and the limiting pressure ring (205) are symmetrically mounted relative to the bearing limiting ring (203); a grease injection bin is provided between the rotary support seat (202) and the bearing limiting ring (203); the grease injection bin is in continuous communication with a plurality of liquid outlets (206) and a liquid inlet (207).

3. The new energy vehicle drive hub bearing unit according to claim 2, characterized in that: The second sealing control assembly (4) further includes a second adjusting knob (404) connected to the middle 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 circumferentially 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); the sealing cover (401) is rotatably connected to the plurality of second adjusting knobs (404).

4. The new energy vehicle drive hub bearing unit according to claim 3, 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) includes a central transmission rod (301), a limiting plate (304) is installed on the front end of the central transmission rod (301), a 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 hub mounting plate (302), a positioning strip (305) is slidably connected to the inner side of the positioning groove (306), and a plurality of hub mounting screws (303) are installed on the inner side of the side of the hub mounting plate (302).

5. The new energy vehicle drive hub bearing unit according to claim 4, 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) pass through the transmission positioning seat (104) and are in 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.

6. The new energy vehicle drive hub bearing unit according to claim 5, characterized in that: The front end of the second bearing cover (201) is fixedly connected to the sealing cover (401), and a sealing ring is provided between the front end of the second bearing cover (201) and the sealing cover (401). Flow bins are provided between the two ends of the rotary support seat (202) and the limiting spacer (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). The plurality of liquid outlets (206), liquid inlets (207) and reflux channels (208) are all arranged in a circle relative to the axis of the rotary support seat (202).

7. The new energy vehicle drive hub bearing unit according to claim 6, characterized in that: The front end of the central transmission rod (301) passes through the transmission positioning seat (104), the rotary 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 a thread; a plurality of positioning strips (305) are arranged in a circle relative to the wheel hub mounting plate (302); one end of the positioning strips (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) and the central transmission rod (301) are clamped and installed by the plurality of positioning strips (305); the central transmission rod (301) is fixedly connected to the transmission positioning seat (104) and the rotary support seat (202).

8. The new energy vehicle drive hub bearing unit according to claim 7, 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 disc (302) is rotatably connected to the plurality of compression arc strips (406) via a second sealing ring (407).

9. A rigid bracket for the new energy vehicle drive hub bearing unit according to claim 8, comprising a rigid connection component (5), the rigid connection component (5) being connected to the outer side of the new energy vehicle drive hub bearing unit, 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-prong arm (504) is rotatably connected to the bottom end of the rigid mounting seat (501), and the middle part of the three-prong 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 inserted between the transmission mounting seat (506) and the transmission positioning seat (104).

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