Intelligent hub bearing unit
By integrating multiple sensor modules and improved sealing structures in the hub bearing unit, the problem that existing hub bearings cannot intelligently judge the vehicle status and poor sealing are solved, real-time monitoring and safety warning of vehicle status are achieved, and sealing is improved.
Patent Information
- Application Number
- CN202420727624.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-10
AI Technical Summary
Existing hub bearings cannot intelligently judge the operating status of the vehicle, cannot provide safety warnings and status monitoring of the vehicle, and their sealing properties are poor.
An intelligent hub bearing unit is designed, and a number of sensor modules (including temperature sensors, vibration acceleration sensors and load sensors) are used to monitor the vehicle status, and the sealing ability is improved through a combined structure of sealing shaft covers, sealing cylinders and annular grooves.
Real-time monitoring and safety warning of vehicle operating status are achieved, the sealing of hub bearings is improved, and water is avoided from entering the bearings, thereby extending the service life.
Smart Images
Figure CN222596553U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wheel hub units, in particular to an intelligent wheel hub bearing unit. Background Art
[0002] The wheel hub bearing is one of the key components of an automobile. Its main function is to bear weight and provide precise guidance for the rotation of the wheel hub, which requires it to be able to withstand not only axial loads but also radial loads.
[0003] The existing wheel hub bearings cannot intelligently judge the operating status of the vehicle, cannot provide safety warnings and status monitoring for the vehicle, and their sealing performance is poor. Therefore, it is necessary to design and modify the intelligent wheel hub bearing unit to effectively prevent the phenomenon of being unable to provide safety warnings and status monitoring for the vehicle. Utility Model Content
[0004] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present utility model is to provide an intelligent wheel hub bearing unit, which has the advantages of good sealing and the ability to provide safety warnings and status monitoring for the vehicle, thereby solving the problems that the existing wheel hub bearings cannot intelligently judge the operating status of the vehicle, cannot provide safety warnings and status monitoring for the vehicle, and have poor sealing.
[0005] The utility model provides the following technical solutions: an intelligent wheel hub bearing unit, comprising an automobile drive shaft, a bearing inner ring is fixedly connected to the surface of the automobile drive shaft, a ball is movably connected to the surface of the bearing inner ring, a bearing outer ring is movably connected to the surface of the ball, the bearing inner ring has the same width as the bearing outer ring, both sides of the surface of the bearing inner ring are fixedly connected to sealing shaft covers, the sealing shaft covers are movably connected to the bearing outer ring, a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor are respectively fixedly connected to the right side of the bearing outer ring, a first vibration acceleration sensor, a second vibration acceleration sensor, a third vibration acceleration sensor and a fourth vibration acceleration sensor are respectively fixedly connected to the surface of the bearing outer ring, and the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor are uniformly connected. Distributed on the right side of the outer ring of the bearing, the first vibration acceleration sensor, the second vibration acceleration sensor, the third vibration acceleration sensor and the fourth vibration acceleration sensor are evenly distributed on the right side of the outer ring of the bearing, and the right side of the inner ring of the bearing is respectively fixedly connected with the first load sensor, the second load sensor, the third load sensor and the fourth load sensor, the first load sensor, the second load sensor, the third load sensor and the fourth load sensor are evenly distributed on the right side of the inner ring of the bearing, both sides of the surface of the automobile drive shaft are fixedly connected with fixing rings, the surface of the fixing ring is provided with annular grooves, the number of the annular grooves is two, both sides of the outer ring of the bearing are fixedly connected with sealing cylinders, the inside of the sealing cylinder is respectively fixedly connected with the first sealing sheet and the second sealing sheet, and the first sealing sheet and the second sealing sheet are both movably connected with the annular grooves.
[0006] The beneficial effects of the utility model are as follows: the utility model adopts a second sealing sheet and an annular groove to be movably connected, thereby performing a first-level sealing process, the first sealing sheet and the annular groove are movably connected, thereby performing a second-level sealing process, and by setting a sealing shaft cover, a third-level sealing process is performed. By setting a fixed ring, water in the external environment can be prevented from moving along the automobile drive shaft to the surface of the inner ring of the bearing, thereby blocking the water flow moving along the automobile drive shaft, thereby performing a fourth-level sealing process. The device has the advantages of good sealing performance and can provide safety warnings and status monitoring for vehicles. The utility model has the advantages of corrosion resistance and high hardness through the sealing shaft cover made of plastic material. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the structure of the utility model.
[0008] Figure 2 It is a schematic diagram of the right side of the bearing inner ring and bearing outer ring structure of the utility model.
[0009] Figure 3It is a front cross-sectional schematic diagram of the bearing outer ring structure of the utility model.
[0010] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure in the middle. DETAILED DESCRIPTION
[0011] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0012] like Figures 1 to 4 As shown, the intelligent wheel hub bearing unit of this embodiment includes an automobile driving shaft 1, a bearing inner ring 2 is fixedly connected to the surface of the automobile driving shaft 1, a ball 3 is movably connected to the surface of the bearing inner ring 2, a bearing outer ring 4 is movably connected to the surface of the ball 3, the bearing inner ring 2 has the same width as the bearing outer ring 4, both sides of the surface of the bearing inner ring 2 are fixedly connected to a sealing shaft cover 5, the sealing shaft cover 5 is movably connected to the bearing outer ring 4, the right side of the bearing outer ring 4 is respectively fixedly connected with a first temperature sensor 6, a second temperature sensor 7, a third temperature sensor 8 and a fourth temperature sensor 9, the surface of the bearing outer ring 4 is respectively fixedly connected with a first vibration acceleration sensor 10, a second vibration acceleration sensor 11, a third vibration acceleration sensor 12 and a fourth vibration acceleration sensor 13, the first temperature sensor 6, the second temperature sensor 7, the third temperature sensor 8 and the fourth temperature sensor 9 are evenly distributed on the right side of the bearing outer ring 4, and the first vibration acceleration sensor 6, the second temperature sensor 7, the third temperature sensor 8 and the fourth temperature sensor 9 are evenly distributed on the right side of the bearing outer ring 4. The dynamic acceleration sensor 10, the second vibration acceleration sensor 11, the third vibration acceleration sensor 12 and the fourth vibration acceleration sensor 13 are evenly distributed on the right side of the bearing outer ring 4, and the first load sensor 14, the second load sensor 15, the third load sensor 16 and the fourth load sensor 17 are fixedly connected to the right side of the bearing inner ring 2 respectively. The first load sensor 14, the second load sensor 15, the third load sensor 16 and the fourth load sensor 17 are evenly distributed on the right side of the bearing inner ring 2. Both sides of the surface of the automobile drive shaft 1 are fixedly connected with a fixing ring 19, and the surface of the fixing ring 19 is provided with an annular groove 20, and the number of the annular grooves 20 is two. Both sides of the bearing outer ring 4 are fixedly connected with a sealing cylinder 18, and the two sides inside the sealing cylinder 18 are fixedly connected with a first sealing sheet 21 and a second sealing sheet 22, respectively, and the first sealing sheet 21 and the second sealing sheet 22 are movably connected to the annular groove 20.
[0013] refer to Figure 2 and Figure 3 , the sealing shaft cover 5 is made of plastic material.
[0014] In this embodiment, the sealing shaft cover 5 made of plastic material has the advantages of corrosion resistance and high hardness.
[0015] refer to Figure 3The first sealing sheet 21 is made of silicone material.
[0016] In this embodiment, the first sealing sheet 21 made of silicone material has the advantages of good sealing, corrosion resistance, puncture resistance, softness and wear resistance.
[0017] refer to Figure 1 and Figure 3 The second sealing sheet 22 is made of rubber.
[0018] In this embodiment, the second sealing sheet 22 made of rubber material has the advantages of wear resistance, good sealing performance and corrosion resistance.
[0019] refer to Figure 2 and Figure 3 The first temperature sensor 6, the second temperature sensor 7, the third temperature sensor 8 and the fourth temperature sensor 9 are all welded and fixed to the bearing outer ring 4, the first vibration acceleration sensor 10, the second vibration acceleration sensor 11, the third vibration acceleration sensor 12 and the fourth vibration acceleration sensor 13 are all welded and fixed to the bearing outer ring 4, and the first load sensor 14, the second load sensor 15, the third load sensor 16 and the fourth load sensor 17 are all welded and fixed to the bearing inner ring 2.
[0020] In this embodiment, the first temperature sensor 6, the second temperature sensor 7, the third temperature sensor 8, the fourth temperature sensor 9, the first vibration acceleration sensor 10, the second vibration acceleration sensor 11, the third vibration acceleration sensor 12, the fourth vibration acceleration sensor 13, the first load sensor 14, the second load sensor 15, the third load sensor 16 and the fourth load sensor 17 are fixed respectively by welding, which can improve the stability of the fixation of the above sensors.
[0021] refer to Figure 1 and Figure 3 , the sealing cylinder 18 is made of stainless steel.
[0022] In this embodiment, the sealing cylinder 18 made of stainless steel has the advantages of being rust-resistant and having high hardness.
[0023] The second sealing sheet 22 of the utility model is movably connected with the annular groove 20, thereby performing a first-level sealing process, and the first sealing sheet 21 is movably connected with the annular groove 20, thereby performing a second-level sealing process, and by setting the sealing shaft cover 5, a third-level sealing process is performed, and by setting the fixing ring 19, water in the external environment can be prevented from moving along the automobile drive shaft 1 to the surface of the bearing inner ring 2, thereby blocking the water flow moving along the automobile drive shaft 1, thereby performing a fourth-level sealing process;
[0024] During the braking process of the wheel end, abnormal high temperature is caused by abnormal braking or braking failure, which can be sensed by the first temperature sensor 6, the second temperature sensor 7, the third temperature sensor 8 and the fourth temperature sensor 9. The hub bearing unit in the normal braking range measures the working temperature To = 170 ° C. When the measured temperature exceeds 170 + 30 = 200 ° C within a short period of time during the braking process, it indicates that the braking is abnormal. The central processor issues a safety warning prompt, and the brake needs to be repaired to prevent safety accidents caused by abnormal braking. The first temperature sensor 6, the second temperature sensor 7, the third temperature sensor 8 and the fourth temperature sensor 9 all use wired signal transmission, and the signal is transmitted to the central processor;
[0025] Due to improper use of the vehicle, the preset load-bearing design capacity of the vehicle is exceeded, such as exceeding the load-bearing capacity by 20%, which is sensed by the first load sensor 14, the second load sensor 15, the third load sensor 16 and the fourth load sensor 17. For example, Mo=3.6kN.m, when this value is exceeded, it indicates that overloading has occurred, and a re-inspection is required to prevent safety accidents. The first load sensor 14, the second load sensor 15, the third load sensor 16 and the fourth load sensor 17 all use wireless signal transmission, and a wireless signal receiver is arranged on the steering knuckle of the car, and then the signal is transmitted to the central processor;
[0026] When the wheel assembly is damaged by plasticity, the first load sensor 14, the second load sensor 15, the third load sensor 16 and the fourth load sensor 17 can sense abnormal impact pulses. Once the instantaneous pulse load exceeds the Mo value, such as Mo=4.5kN.m, it will be used as a prerequisite for a safety warning when the value is exceeded. At the same time, the first vibration acceleration sensor 10, the second vibration acceleration sensor 11, the third vibration acceleration sensor 12 and the fourth vibration acceleration sensor 13 can be combined to perform vibration acceleration analysis. When the wheel end is damaged, such as plastic deformation of the wheel hub bearing unit raceway or deformation of the wheel, the acceleration value sensed by the vibration acceleration sensor 10 will increase abnormally and exceed the set range. For example, if the set requirement is ao=5g, a safety warning will be issued when it exceeds 2 times ao, and the wheel end needs to be repaired.
[0027] This device integrates multiple sensor unit modules, so that it has the ability to acquire and collect wheel-end temperature, wheel-end vibration acceleration, wheel-end load, torque and stiffness signals, and transmit them to the vehicle central controller for signal analysis, and to regulate the vehicle's operating status, provide safety warnings and other functions.
Claims
1. An intelligent wheel hub bearing unit, comprising a vehicle drive shaft (1), characterized in that: The surface of the automobile drive shaft (1) is fixedly connected to a bearing inner ring (2), the surface of the bearing inner ring (2) is movably connected to a ball (3), the surface of the ball (3) is movably connected to a bearing outer ring (4), the bearing inner ring (2) and the bearing outer ring (4) have the same width, both sides of the surface of the bearing inner ring (2) are fixedly connected to a sealing shaft cover (5), the sealing shaft cover (5) is movably connected to the bearing outer ring (4), the right side of the bearing outer ring (4) is respectively fixedly connected to a first temperature sensor (6), a second temperature sensor (7), a third temperature sensor (8) and a fourth temperature sensor (9), the surface of the bearing outer ring (4) is respectively fixedly connected to a first vibration acceleration sensor (10), a second vibration acceleration sensor (11), a third vibration acceleration sensor (12) and a fourth vibration acceleration sensor (13), the first temperature sensor (6), the second temperature sensor (7), the third temperature sensor (8) and the fourth temperature sensor (9) are evenly distributed on the right side of the bearing outer ring (4), the first vibration acceleration sensor (10 ... The second vibration acceleration sensor (11), the third vibration acceleration sensor (12) and the fourth vibration acceleration sensor (13) are evenly distributed on the right side of the bearing outer ring (4), and the right side of the bearing inner ring (2) is fixedly connected with a first load sensor (14), a second load sensor (15), a third load sensor (16) and a fourth load sensor (17), respectively. The first load sensor (14), the second load sensor (15), the third load sensor (16) and the fourth load sensor (17) are evenly distributed on the shaft. On the right side of the bearing inner ring (2), both sides of the surface of the automobile drive shaft (1) are fixedly connected with a fixing ring (19), and the surface of the fixing ring (19) is provided with an annular groove (20), and the number of the annular grooves (20) is two. Both sides of the bearing outer ring (4) are fixedly connected with a sealing cylinder (18), and the two sides of the inside of the sealing cylinder (18) are respectively fixedly connected with a first sealing sheet (21) and a second sealing sheet (22), and the first sealing sheet (21) and the second sealing sheet (22) are both movably connected to the annular groove (20).
2. The intelligent hub bearing unit according to claim 1, characterized in that: The sealing shaft cover (5) is made of plastic material.
3. The intelligent hub bearing unit according to claim 2, characterized in that: The first sealing sheet (21) is made of silicone material.
4. The intelligent hub bearing unit according to claim 3, characterized in that: The second sealing sheet (22) is made of rubber material.
5. The intelligent hub bearing unit according to claim 4, characterized in that: The first temperature sensor (6), the second temperature sensor (7), the third temperature sensor (8) and the fourth temperature sensor (9) are all welded and fixed to the outer ring (4) of the bearing; the first vibration acceleration sensor (10), the second vibration acceleration sensor (11), the third vibration acceleration sensor (12) and the fourth vibration acceleration sensor (13) are all welded and fixed to the outer ring (4) of the bearing; and the first load sensor (14), the second load sensor (15), the third load sensor (16) and the fourth load sensor (17) are all welded and fixed to the inner ring (2) of the bearing.
6. An intelligent hub bearing unit according to claim 1, 2 or 5, characterized in that: The sealing cylinder (18) is made of stainless steel.