Air-cooled heat-dissipating hub bearing and manufacturing process thereof

Abstract

The application discloses a gas cooling and heat dissipating hub bearing and a preparation process, and relates to the technical field of bearings.The gas cooling and heat dissipating hub bearing comprises an inner ring and an outer ring, a plurality of steel balls are arranged between the inner ring and the outer ring and rotate, and an airflow guiding module is arranged and used for automatically guiding airflow into the bearing interior when rotating; and a reverse stop air guiding module is arranged to solve the problem that ordinary hub bearings are prone to overheating in the interior during long-time high-speed rotation, the airflow guiding module and the reverse stop air guiding module are designed, the airflow guiding module and the reverse stop air guiding module are used in cooperation, the automatic guiding of the airflow into the bearing interior is realized when the bearing rotates, the function of gas cooling and heat dissipation is realized, the temperature during high-speed rotation is effectively reduced, and the function of blocking mud and water is simultaneously achieved, so that the phenomenon that mud and water enter the interior during gas cooling and heat dissipation is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hub bearings, in particular to a gas-cooled heat dissipation hub bearing and a preparation process. BACKGROUND

[0002] As a core component of the vehicle running system, the performance of the hub bearing directly affects the driving safety and energy efficiency; with the development of lightweight and high-speed of new energy vehicles, the rotational speed and load of the hub bearing are significantly improved.

[0003] In the prior art, ordinary hub bearings are prone to heat accumulation inside during long-term high-speed rotation due to frictional temperature rise caused by high-speed rotation, which accelerates the oxidation failure of the lubricating grease and causes the steel ball and raceway to adhere and wear; and in order to prevent mud from entering the bearing, the bearing is usually sealed, which further reduces the heat dissipation efficiency and is prone to heat accumulation.

[0004] That is, the prior art has the following technical problems: ordinary hub bearings are prone to heat accumulation inside during long-term high-speed rotation. Therefore, a gas-cooled heat dissipation hub bearing is proposed to solve the above problems. SUMMARY

[0005] A gas-cooled heat dissipation hub bearing is provided in the present embodiment to solve the problem of heat accumulation inside ordinary hub bearings in the prior art during long-term high-speed rotation.

[0006] According to one aspect of the present application, a gas-cooled heat dissipation hub bearing is provided, comprising:

[0007] An inner ring and an outer ring, a plurality of steel balls being rotatably arranged between the inner ring and the outer ring;

[0008] An air flow guiding module, the air flow guiding module being arranged at a gap between the inner ring and the outer ring, the air flow guiding module being used to automatically guide air flow into the bearing interior during rotation;

[0009] A backstop air guiding module, the backstop air guiding module being arranged at the outer ring, the backstop air guiding module being used to guide air flow out.

[0010] Further, the air flow guiding module comprises a baffle and a rotating air inlet unit, the baffle being fixedly connected to an outer wall of the inner ring, a plurality of wind tunnels being arranged in a ring shape on the baffle, the rotating air inlet unit being fixedly connected to one side of the wind tunnels, and a gas guiding groove being fixedly connected to the other side of the wind tunnels.

[0011] Furthermore, the rotating air intake unit includes an air intake shell and an air gathering shroud. The air intake shell is fixedly installed on one side of the wind tunnel and is interconnected with the wind tunnel. An opening is provided on one side of the air intake shell, and the direction of the opening is the same as the rotation direction of the baffle ring. The air gathering shroud extends from the opening of the air intake shell.

[0012] Furthermore, the inner cavity of the air intake shell is provided with a plurality of mud and water blocking parts, which are staggered and fixed to the inner wall of the air intake shell, and the gaps between the plurality of mud and water blocking parts form an airflow channel.

[0013] Furthermore, the ends of several of the mud and water barrier sections overlap.

[0014] Furthermore, a recessed area is formed between the mud and water barrier and the air intake shell.

[0015] Furthermore, the mud and water barrier is provided with a recessed area.

[0016] Furthermore, the non-return air guiding module includes an air guiding hole, an air guiding groove, a sealing cover plate, and a sealing round seat. The air guiding hole is located on the inner wall of the outer ring. An air guiding groove is fixedly provided on one side of the air guiding hole. A sealing cover plate is slidably provided in the inner cavity of the air guiding groove. A sealing round seat is fixedly connected to the bottom surface of the sealing cover plate. An exhaust groove is provided on the sealing round seat. One end of a connecting rod is fixedly connected to the bottom surface of the sealing round seat. The other end of the connecting rod is fixedly connected to a spring plate. The spring plate is fixedly connected to the inner wall of the outer ring.

[0017] Furthermore, the manufacturing process of the air-cooled heat dissipation hub bearing includes the following steps:

[0018] A. Core component manufacturing and module pre-assembly;

[0019] B. Module integration and bearing body assembly;

[0020] C. Sealing, lubrication, and functional verification.

[0021] Furthermore, in step A, the manufacturing of core components and pre-assembly of modules includes the following steps:

[0022] a. Precision machining of the inner ring, outer ring, and steel balls;

[0023] b. Manufacture the retaining ring and process the wind tunnel and air guide groove interfaces;

[0024] c. Manufacture and assemble the rotary air intake unit, form the air intake shell and the air gathering cover, and fix the mud and water blocking parts alternately inside the air intake shell to form a curved airflow channel and a recessed area.

[0025] d. Manufacturing and assembling the reverse check air guide module, machining the air guide hole and air guide circular groove on the outer ring, manufacturing the closing cover plate, closing circular seat with exhaust groove, connecting rod and spring sheet, and assembling them into a movable reverse check valve assembly, and installing it into the air guide circular groove and fixing the spring sheet.

[0026] Further, in step B, the module integration and bearing body assembly include the following steps:

[0027] a. Welding the assembled rotary air inlet unit to the wind tunnel side of the retainer ring;

[0028] b. Installing the air guide groove to the other side of the wind tunnel of the retainer ring;

[0029] c. Fixing and installing the retainer ring integrated with the rotary air inlet unit and the air guide groove to the outer wall of the inner ring;

[0030] d. Arranging the steel balls between the inner and outer ring raceways and adding a retainer;

[0031] e. Assembling the outer ring with the assembled reverse check air guide module and the inner ring with the assembled air flow guide module, ensuring smooth rotation and correct air flow channel direction.

[0032] Further, in step C, sealing, lubrication and function verification include the following steps:

[0033] a. Injecting lubricating grease;

[0034] b. High-speed rotation test of air flow smoothness and one-way sealing of the reverse check air guide module;

[0035] c. Mud blocking effect experiment.

[0036] Through the above embodiments of the present application, in order to solve the problem of overheating in the internal part of the ordinary hub bearing during long-term high-speed rotation in the prior art, the air flow guide module and the reverse check air guide module are designed. Through the cooperation of the air flow guide module and the reverse check air guide module, the air flow can be automatically guided into the internal part of the bearing during rotation, thereby realizing the function of air cooling and heat dissipation, effectively reducing the temperature during high-speed rotation, and at the same time having the function of blocking mud, which can effectively avoid the phenomenon of mud entering the internal part during air cooling and heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0038] Figure 1 Overall structure schematic diagram of an embodiment of the present application;

[0039] Figure 2 Overall structure schematic diagram of an embodiment of the present application;

[0040] Figure 3 Overall structure schematic diagram of an embodiment of the present application;

[0041] Figure 4 Overall structure schematic diagram of an embodiment of the present application;

[0042] Figure 5 Overall structure schematic diagram of an embodiment of the present application;

[0043] Figure 6 Overall structure schematic diagram of an embodiment of the present application; Figure 5 Overall structure schematic diagram of an embodiment of the present application;

[0044] Figure 7 Overall structure schematic diagram of an embodiment of the present application;

[0045] Figure 8 Overall structure schematic diagram of an embodiment of the present application;

[0046] Figure 9 Overall structure schematic diagram of an embodiment of the present application;

[0047] Figure 10 Overall structure schematic diagram of an embodiment of the present application;

[0048] Figure 11 Overall structure schematic diagram of an embodiment of the present application;

[0049] Figure 12 Overall structure schematic diagram of an embodiment of the present application;

[0050] Figure 13 Overall structure schematic diagram of an embodiment of the present application;

[0051] In the figure:

[0052] Hub bearing body 1, inner ring 101, outer ring 102, steel ball 103, retainer 104;

[0053] Air flow guide module 2, baffle ring 201;

[0054] Rotary air inlet unit 202, air inlet shell 2021, air flow channel 2022, air collecting cover 2023, mud-water barrier 2024;

[0055] The inclined blocking plate 2025, the arc-shaped blocking plate 2026 and the bent blocking plate 2027 are arranged on the inner ring 101.

[0056] The air guide groove 203 and the air tunnel 204

[0057] The air guide module 3, the air guide hole 301, the air guide circular groove 302, the sealing cover plate 303, the sealing circular seat 304, the air exhaust groove 3041, the connecting rod 305 and the spring sheet 306. DETAILED DESCRIPTION

[0058] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts should fall within the protection scope of the present application.

[0059] Please refer to Figures 1-3 As shown in the drawings, a gas cooling and heat dissipation hub bearing comprises:

[0060] The inner ring 101 and the outer ring 102, a plurality of steel balls 103 are arranged between the inner ring 101 and the outer ring 102 in a rotating manner;

[0061] The air flow guiding module 2 is arranged at the gap between the inner ring 101 and the outer ring 102, and is used for automatically guiding air flow into the bearing interior when rotating;

[0062] The air guide module 3 is arranged at the outer ring 102, and is used for guiding air flow outwards.

[0063] Through the above technical scheme, through the cooperation of the air flow guiding module 2 and the air guide module 3, the air flow can be automatically guided into the bearing interior when the bearing rotates, so that the function of gas cooling and heat dissipation is realized, thereby effectively reducing the temperature when rotating at high speed, and at the same time, the function of blocking mud is realized, so that the phenomenon of mud entering the interior when gas cooling and heat dissipation is effectively avoided.

[0064] As a further technical scheme, please refer to Figure 7 and Figure 8As shown, the airflow guide module 2 comprises a baffle ring 201 and a rotating air inlet unit 202, the baffle ring 201 is fixedly connected with the outer wall of the inner ring 101, a plurality of annularly distributed air holes 204 are formed in the baffle ring 201, the rotating air inlet unit 202 is fixedly connected at one side of the air hole 204, and the air guide groove 203 is fixedly connected at the other side of the air hole 204. Through the technical scheme, when the bearing rotates, the baffle ring 201 can also rotate, and the rotating air inlet unit 202 can also rotate through the rotation of the baffle ring 201. Through the rotation of the rotating air inlet unit 202, the gas outside can enter through the rotating air inlet unit 202, and the gas passes through the air hole 204 and the air guide groove 203 to enter the inside of the bearing, which plays a gas cooling and heat dissipation function for the inside of the bearing.

[0065] As a specific technical solution, please refer to Figure 9 As shown, the rotating air inlet unit 202 comprises an air inlet shell 2021 and a gas gathering cover 2023, the air inlet shell 2021 is fixedly arranged at one side of the air hole 204 and communicates with the air hole 204, one side of the air inlet shell 2021 is provided with an opening, the opening direction is the same as the rotation direction of the baffle ring 201, the gas gathering cover 2023 extends from the opening of the air inlet shell 2021, and the gas gathering cover 2023 is arc-shaped outward. Through the technical scheme, when the baffle ring 201 rotates to drive the rotating air inlet unit 202 to rotate, the opening direction of the rotating air inlet unit 202 is the same as the rotation direction of the baffle ring 201, and the gas gathering cover 2023 can also gather airflow, so that the airflow enters the inner cavity of the air inlet shell 2021 through the gas gathering cover 2023, enters the inside of the bearing through the air hole 204 and the air guide groove 203, and the faster the rotation speed, the faster the air inlet speed, which realizes the automatic air guiding function during work, thereby realizing the automatic gas cooling and heat dissipation effect;

[0066] A plurality of mud blocking parts 2024 are arranged in the inner cavity of the air inlet shell 2021, the plurality of mud blocking parts 2024 are fixedly arranged on the inner wall of the air inlet shell 2021 in a staggered manner, and the gaps between the plurality of mud blocking parts 2024 form airflow channels 2022.

[0067] The ends of the plurality of mud blocking parts 2024 overlap. Through the technical scheme, the airflow channels 2022 formed by the mud blocking parts 2024 are curved, and when the airflow carrying mud enters the inside of the air inlet shell 2021, the plurality of mud blocking parts 2024 can block and block the mud;

[0068] As a specific technical solution, the mud blocking part 2024 and the air inlet shell 2021 form a recessed area;

[0069] Embodiment one: asFigure 10 As shown in the figure, the mud-water barrier part 2024 is an inclined barrier plate 2025, and the included angle between the inclined barrier plate 2025 and the air inlet shell 2021 is 75-85°. Through this embodiment, a recessed area is formed between the inclined barrier plate 2025 and the air inlet shell 2021. When the mud-water contacts the inclined barrier plate 2025, due to the existence of the inclined recessed area, the mud-water slides to the recessed area by its own potential energy, so that the mud-water is gathered in the recessed area, realizing the function of automatically preventing the mud-water from further entering.

[0070] Embodiment two: as shown in the figure, Figure 11 As shown in the figure, the mud-water barrier part 2024 is an arc-shaped barrier plate 2026. Through this embodiment, an arc surface recessed area is formed between the arc-shaped barrier plate 2026 and the air inlet shell 2021. When the mud-water contacts the arc surface of the arc-shaped barrier plate 2026, due to the existence of the arc surface recess, the mud-water slides to the recessed area by its own potential energy, so that the mud-water is gathered in the recessed area, realizing the function of automatically blocking the mud-water.

[0071] As a further technical solution, the mud-water barrier part 2024 is provided with a recessed area.

[0072] Embodiment three: as shown in the figure, Figure 12 As shown in the figure, the mud-water barrier part 2024 is a bent barrier plate 2027, and the end of the bent barrier plate 2027 is provided with a bending part, forming a recessed area. When the mud-water contacts the bent barrier plate 2027, it will also slide to the recessed area formed by the bending part by its own potential energy, so that the mud-water is gathered in the recessed area, realizing the function of blocking the mud-water.

[0073] As a further technical solution, please refer to Figure 4 , Figure 5 and Figure 6As shown, the anti-reverse air guide module 3 includes an air guide hole 301, an air guide groove 302, a sealing cover plate 303, and a sealing seat 304. The air guide hole 301 is located on the inner wall of the outer ring 102. The air guide groove 302 is fixedly provided on one side of the air guide hole 301. The sealing cover plate 303 is slidably disposed in the inner cavity of the air guide groove 302. The sealing seat 304 is fixedly connected to the bottom surface of the sealing cover plate 303. An exhaust groove 3041 is provided on the sealing seat 304. A connecting rod 305 is fixedly connected to the bottom surface of the sealing seat 304. At one end, the other end of the connecting rod 305 is fixedly connected to the spring plate 306, and the spring plate 306 is fixedly connected to the inner wall of the outer ring 102. Through this technical solution, when the bearing rotates at high speed, the airflow guiding module 2 can introduce airflow into the bearing. After the airflow flows through the bearing, it is discharged through the air guide hole 301. The airflow pushes the closed round seat 304, causing the closed round seat 304 to move upward, thereby exposing the exhaust groove 3041. The gas is discharged through the exhaust groove 3041, realizing the function of one-way discharge and preventing external dirt from flowing back into the bearing.

[0074] Furthermore, the manufacturing process of the air-cooled heat dissipation hub bearing includes the following steps:

[0075] A. Core component manufacturing and module pre-assembly;

[0076] B. Module integration and bearing body assembly;

[0077] C. Sealing, lubrication, and functional verification.

[0078] Step A includes the following steps: Core component manufacturing and module pre-assembly.

[0079] a. Precision machining of inner ring 101, outer ring 102, and steel ball 103;

[0080] b. Manufacture the retaining ring 201 and process the interfaces of the wind tunnel 204 and the air guide groove 203;

[0081] c. Manufacture and assemble the rotary air intake unit 202, form the air intake shell 2021 and the air gathering cover 2023, fix the mud and water blocking part 2024 in the air intake shell 2021 in an alternating manner, and form the curved airflow channel 2022 and the recessed area.

[0082] d. Manufacture and assemble the check valve module 3, process the air guide hole 301 and the air guide groove 302 on the outer ring 102, manufacture the sealing cover plate 303, the sealing round seat 304 with the exhaust groove 3041, the connecting rod 305 and the spring plate 306, and assemble them into a movable check valve assembly and insert it into the air guide groove 302, and fix the spring plate 306.

[0083] Step B, the module integration and bearing body assembly, includes the following steps:

[0084] a. Welding the assembled rotary air inlet unit 202 to the air tunnel 204 side of the baffle ring 201;

[0085] b. Installing the air guide groove 203 to the other side of the air tunnel 204 of the baffle ring 201;

[0086] c. Fixing the baffle ring 201 integrated with the rotary air inlet unit 202 and the air guide groove 203 to the outer wall of the inner ring 101;

[0087] d. Arranging the steel balls 103 between the inner and outer ring raceways and adding a retainer;

[0088] e. Assembling the outer ring 102 of the assembled anti-reverse air guide module 3 with the inner ring 101 of the assembled air flow guide module 2, ensuring smooth rotation and correct air flow channel direction.

[0089] In step C, the sealing, lubrication and function verification includes the following steps:

[0090] a. Injecting lubricating grease;

[0091] b. High-speed rotation test of air flow smoothness and one-way sealing of the anti-reverse air guide module 3;

[0092] c. Conducting a mud barrier effect experiment.

[0093] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An air-cooled heat dissipation hub bearing, characterized in that: The air-cooled heat dissipation hub bearing includes: An inner ring (101) and an outer ring (102) are provided with a plurality of steel balls (103) rotatably disposed between the inner ring (101) and the outer ring (102). Airflow guiding module (2), the airflow guiding module (2) is set in the gap between the inner ring (101) and the outer ring (102), the airflow guiding module (2) is used to automatically guide airflow into the bearing during rotation; A non-return air guide module (3) is provided at the outer ring (102) and is used to allow airflow to be discharged. The airflow guiding module (2) includes a baffle ring (201) and a rotating air intake unit (202). The baffle ring (201) is fixedly connected to the outer wall of the inner ring (101). The baffle ring (201) has several wind tunnels (204) arranged in a ring. The rotating air intake unit (202) is fixedly connected to one side of the wind tunnel (204), and the air guide groove (203) is fixedly connected to the other side of the wind tunnel (204). The rotating air intake unit (202) includes an air intake shell (2021) and an air gathering shroud (2023). The air intake shell (2021) is fixedly installed on one side of the wind tunnel (204) and is interconnected with the wind tunnel (204). An opening is provided on one side of the air intake shell (2021), and the direction of the opening is the same as the rotation direction of the baffle ring (201). The air gathering shroud (2023) extends from the opening of the air intake shell (2021), and the air gathering shroud (2023) is in the shape of an outwardly expanding arc. The anti-reverse air guide module (3) includes an air guide hole (301), an air guide groove (302), a sealing cover plate (303), and a sealing round seat (304). The air guide hole (301) is located on the inner wall of the outer ring (102). An air guide groove (302) is fixedly provided on one side of the air guide hole (301). A sealing cover plate (303) is slidably provided in the inner cavity of the air guide groove (302). A sealing round seat (304) is fixedly connected to the bottom surface of the sealing cover plate (303). An exhaust groove (3041) is provided on the sealing round seat (304). One end of a connecting rod (305) is fixedly connected to the bottom surface of the sealing round seat (304). The other end of the connecting rod (305) is fixedly connected to a spring plate (306). The spring plate (306) is fixedly connected to the inner wall of the outer ring (102).

2. The air-cooled heat dissipation hub bearing according to claim 1, characterized in that: The air intake shell (2021) has a plurality of mud and water blocking parts (2024) in its inner cavity. The plurality of mud and water blocking parts (2024) are arranged in an alternating manner and fixed on the inner wall of the air intake shell (2021). The gaps between the plurality of mud and water blocking parts (2024) form an airflow channel (2022).

3. The air-cooled heat dissipation hub bearing according to claim 2, characterized in that: A recessed area is formed between the mud and water barrier (2024) and the air intake shell (2021).

4. The air-cooled heat dissipation hub bearing according to claim 2, characterized in that: The mud and water barrier (2024) is provided with a recessed area.

5. A manufacturing process for an air-cooled heat-dissipating wheel hub bearing according to any one of claims 1-4, characterized in that: The manufacturing process of the air-cooled heat dissipation hub bearing includes the following steps: A. Core component manufacturing and module pre-assembly; B. Module integration and bearing body assembly; C. Sealing, lubrication, and functional verification.

6. The manufacturing process of the air-cooled heat dissipation hub bearing according to claim 5, characterized in that: Step A includes the following steps: Core component manufacturing and module pre-assembly. a. Precision machining of inner ring (101), outer ring (102), and steel ball (103); b. Manufacture the retaining ring (201) and process the interfaces of the wind tunnel (204) and the air guide groove (203); c. Manufacture and assemble the rotary air intake unit (202), form the air intake shell (2021) and the air gathering cover (2023), and fix the mud and water blocking parts (2024) alternately inside the air intake shell (2021) to form a curved airflow channel (2022) and a recessed area; d. Manufacture and assemble the check valve module (3), process the air guide hole (301) and air guide groove (302) on the outer ring (102), manufacture the sealing cover plate (303), the sealing round seat (304) with the exhaust groove (3041), the connecting rod (305) and the spring plate (306), and assemble them into a movable check valve assembly and insert it into the air guide groove (302), and fix the spring plate (306).

7. The manufacturing process of the air-cooled heat dissipation hub bearing according to claim 5, characterized in that: Step B, the module integration and bearing body assembly, includes the following steps: a. Weld the assembled rotary air intake unit (202) to one side of the wind tunnel (204) of the retaining ring (201); b. Install the air guide groove (203) to the other side of the wind tunnel (204) of the retaining ring (201); c. Fix the retaining ring (201) that integrates the rotary air intake unit (202) and the air guide groove (203) to the outer wall of the inner ring (101); d. Arrange the steel balls (103) between the inner and outer raceways and install a retainer; e. Assemble the outer ring (102) of the assembled anti-reverse air guide module (3) with the inner ring (101) of the assembled airflow guide module (2) to ensure smooth rotation and correct airflow channel direction.

8. The manufacturing process of the air-cooled heat dissipation hub bearing according to claim 5, characterized in that: In step C, the sealing lubrication and functional verification include the following steps: a. Inject lubricating grease; b. High-speed rotation test airflow smoothness and one-way sealing of the non-return air guide module (3); c. Conduct a mud-water barrier effect experiment.

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