Control method of rear axle assembly, control device and vehicle

Abstract

The present invention discloses a control method of a rear axle assembly, a control device thereof and a vehicle, wherein the control method of the rear axle assembly includes a rear axle housing containing oil, a reducer connected to the rear axle housing and an oil suction assembly, wherein the oil suction assembly is used to drive the oil to flow to the bearing of the reducer input shaft, and the control method includes: obtaining a rear axle state detection signal; judging whether the bearing meets the bearing operation condition according to the rear axle state detection signal; if the bearing does not meet the bearing operation condition, controlling the oil suction assembly to operate and adsorb the oil in the rear axle housing to the bearing. The control method of the rear axle assembly can solve the problem of overheating and ablation caused by lack of oil lubrication of the rear axle input end bearing during vehicle operation, thereby ensuring the normal operation of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a control method of a rear axle assembly, a control device thereof, and a vehicle. Background Art

[0002] At present, vehicles such as off-road vehicles usually adopt rear-wheel drive, and the rear-wheel drive is mainly an integral rear drive axle. The integral rear axle has the advantages of reliability, good durability, simple structure and high strength, and can cope with more severe road conditions.

[0003] The integral rear axle assembly is mainly composed of the rear axle housing, the rear main reducer and the half-axle. Since the vehicle often travels on uneven bad roads, mountain roads and harsh and complex roads, the posture of the whole vehicle is different, and the rear axle assembly will also be at different angles. Therefore, for the integral rear axle assembly, an input bearing is provided at the input end of the rear main reducer to fix the input shaft of the rear main reducer and support its rotation. Lubrication and heat dissipation are achieved through the gear oil inside the rear axle cavity. For the general elevation angle state, the oil will be transmitted through the oil channel at the bottom of the rear main reducer housing to avoid poor lubrication and bearing ablation caused by the input bearing not being able to reach the gear oil.

[0004] However, on some extremely harsh and complex roads or when driving up a steep slope, due to the large inclination angle of the rear main reducer, the stirring of the internal gears alone cannot make the oil reach the bearings, which will cause a serious lack of lubricating oil in the input bearings, thereby causing the bearings to burn. The greater the inclination angle of the vehicle, the greater the probability of this happening, which will not only damage the rear axle assembly and cause customer complaints, but is also more likely to cause the vehicle to lose power and be unable to move forward. For car owners who are driving up steep slopes or complex roads, this is very dangerous and may even result in life-threatening consequences. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a control method for a rear axle assembly, which can solve the problem of overheating and ablation caused by lack of oil lubrication of the rear axle input end bearing during vehicle operation, thereby ensuring the normal operation of the vehicle.

[0006] A second aspect of the present invention provides a control device for a rear axle assembly.

[0007] A third aspect of the present invention provides a vehicle.

[0008] In order to solve the above problems, an embodiment of the first aspect of the present invention provides a control method for a rear axle assembly, wherein the rear axle assembly includes a rear axle housing containing oil, a reducer connected to the rear axle housing and an oil suction assembly, the oil suction assembly is used to drive the oil to flow to the bearing of the reducer input shaft, and the control method includes: obtaining the rear axle status detection signal; judging whether the bearing meets the bearing operating conditions according to the rear axle status detection signal; if the bearing does not meet the bearing operating conditions, controlling the oil suction assembly to operate to absorb the oil in the rear axle housing to the bearing.

[0009] According to the control method of the rear axle assembly of the embodiment of the present invention, by adding an oil suction component in the rear axle assembly, when it is determined according to the rear axle state detection signal that the bearing does not meet the bearing operating conditions, that is, the bearing is short of oil, in order to avoid burning of the rear axle input bearing, the oil suction component is controlled to operate so as to drive the oil in the oil chamber to the bearing of the input shaft to achieve lubrication and heat dissipation of the bearing, thereby avoiding the problem of overheating and burning caused by lack of oil lubrication of the rear axle input end bearing during vehicle operation, thereby ensuring the normal operation of the vehicle.

[0010] In some embodiments, the rear axle state detection signal includes at least one of a rear axle tilt angle signal, a rear axle elevation angle signal, and an oil pressure signal in the rear axle assembly.

[0011] In some embodiments, whether the input bearing meets the bearing operating conditions is determined based on the rear axle status detection signal, including: when any one of the rear axle inclination angle signal is greater than a preset inclination angle threshold, the rear axle elevation angle signal is greater than a preset elevation angle threshold, and the oil pressure signal is less than a preset pressure threshold, then the bearing does not meet the bearing operating conditions.

[0012] In some embodiments, the control method further includes: comparing the oil pressure signal with the preset pressure threshold, and sending an alarm signal if the oil pressure signal is less than the preset pressure threshold.

[0013] In some embodiments, the control method further includes: judging whether the bearing meets the bearing operating conditions according to the rear axle status detection signal, and sending a bearing status signal at the same time.

[0014] In some embodiments, the control method further comprises: if the input bearing meets the bearing operating condition, controlling the oil suction assembly to stop operating.

[0015] A second aspect of the present invention provides a control device for a rear axle assembly, wherein the rear axle assembly includes a rear axle housing containing oil, a reducer connected to the rear axle housing, and an oil suction component, wherein the oil suction component is used to drive the oil to flow to the bearing of the reducer input shaft, and the control device includes: an acquisition module, used to acquire a rear axle status detection signal; a judgment module, used to judge whether the bearing meets the bearing operating conditions based on the rear axle status detection signal; and a control module, used to control the operation of the oil suction component to absorb the oil in the rear axle housing to the bearing if the bearing does not meet the bearing operating conditions.

[0016] According to the control device of the rear axle assembly of the embodiment of the present invention, by adding an oil suction component in the rear axle assembly, when it is determined according to the rear axle state detection signal that the bearing does not meet the bearing operating conditions, that is, the bearing is short of oil, in order to avoid the burning of the rear axle input bearing, the oil suction component is controlled to operate so as to drive the oil in the oil chamber to the bearing of the input shaft to achieve lubrication and heat dissipation of the bearing, thereby avoiding the problem of overheating and burning caused by lack of oil lubrication of the rear axle input end bearing, thereby ensuring the normal operation of the vehicle.

[0017] A third aspect of the present invention provides a vehicle, comprising: a rear axle assembly, the rear axle assembly comprising a rear axle housing containing oil, a reducer connected to the rear axle housing, and an oil suction assembly, the oil suction assembly being used to drive the oil to flow to the input bearing of the reducer; a sensor assembly, the sensor assembly being used to detect a rear axle status detection signal; and a controller, the controller being connected to the sensor assembly and the oil suction assembly, and being used to control the oil suction assembly according to the control method described in the above embodiment.

[0018] According to the vehicle of the embodiment of the present invention, an oil suction component is additionally provided in the rear axle assembly. When it is determined according to the rear axle status detection signal that the bearing does not meet the bearing operating conditions, that is, the bearing is short of oil, in order to avoid burning of the rear axle input bearing, the oil suction component is controlled to operate so as to drive the oil in the rear axle housing to the bearing, thereby achieving lubrication and heat dissipation of the bearing, thereby avoiding the problem of overheating and burning caused by lack of oil lubrication of the rear axle input end bearing, ensuring the normal operation of the vehicle, and eliminating the need for manual operation, thereby improving the intelligence of use and enhancing the user experience.

[0019] In some embodiments, the sensor assembly includes at least one of the following: a first angle sensor for detecting a rear axle tilt angle signal; a second angle sensor for detecting a rear axle elevation angle signal of the rear axle assembly; and a pressure sensor for detecting an oil pressure signal in the rear axle assembly.

[0020] In some embodiments, the vehicle further includes: a prompting device, which is connected to the controller and is used to give a prompt according to the alarm signal.

[0021] In some embodiments, the rear axle housing defines an oil chamber containing the oil; the reducer includes a main reducer housing, the main reducer housing defines a first oil passage and a receiving chamber communicating with the first oil passage, a first end of the first oil passage is communicated with the oil chamber, and a second end of the first oil passage leads to the input bearing;

[0022] The oil suction assembly includes: a motor connected to the controller; a turbine connected to the output shaft of the motor through a turbine shaft; a fan wheel connected to the turbine through a fan wheel shaft, and the fan wheel is arranged in the accommodating chamber to drive the oil in the first oil channel to flow.

[0023] In some embodiments, a turbine mounting support and a shaft hole communicating with the accommodating cavity are provided on the outside of the main reducer casing at a position corresponding to the input bearing, and the first end of the sector wheel shaft passes through the shaft hole to be connected to the sector wheel.

[0024] In some embodiments, three turbine mounting holes are provided on the turbine mounting support, and the three turbine mounting holes are in a protruding three-point opposing type.

[0025] In some embodiments, the main reducer housing further defines a second oil passage, a first end of the second oil passage is in communication with the oil chamber, and a second end of the second oil passage leads to the input bearing.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is a structural block diagram of a vehicle according to an embodiment of the present invention;

[0029] Figure 2 is a structural diagram of a rear axle assembly according to one embodiment of the present invention;

[0030] Figure 3 is a partial schematic diagram of a rear axle assembly according to an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the interior of a main reduction housing according to an embodiment of the present invention;

[0032] Figure 5 is an external schematic diagram of a main reduction casing according to an embodiment of the present invention;

[0033] Figure 6 is a structural diagram of an oil absorption assembly according to one embodiment of the present invention;

[0034] Figure 7 is a flow chart of a control method of a rear axle assembly according to an embodiment of the present invention;

[0035] Figure 8 is a flow chart of a control method of a rear axle assembly according to another embodiment of the present invention;

[0036] Fig. 9 is a structural diagram of a control device for a rear axle assembly according to an embodiment of the present invention.

[0037] Reference numerals:

[0038] Vehicles 1000;

[0039] Rear axle assembly 100; sensor assembly 200; controller 300; prompt device 400;

[0040] Rear axle housing 1; reducer 2; oil suction assembly 3;

[0041] Bearing 20; main reducer housing 21; first oil passage 22; motor 31; turbine 32; worm shaft 33; sector wheel 34;

[0042] Sector wheel shaft 340; accommodating chamber 210; turbine mounting support 211; shaft hole 212;

[0043] Turbine mounting hole 214; second oil passage 215.

[0044] A control device 10 of the rear axle assembly; an acquisition module 4; a judgment control module 5; and a control module 6. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0046] In order to solve the above problems, the first embodiment of the present invention proposes a control method for a rear axle assembly. The control method for the rear axle assembly can solve the problem of overheating and ablation caused by lack of oil lubrication of the rear axle input end bearing during vehicle operation, thereby ensuring the normal operation of the vehicle.

[0047] In order to realize the control method of the rear axle assembly provided above, the embodiment of the present invention makes corresponding improvements to the rear axle assembly of the vehicle. Figure 1-Figure 6 A vehicle according to an embodiment of the present invention will be described.

[0048] like Figure 1As shown, the vehicle 1000 includes a rear axle assembly 100 , a sensor assembly 200 , and a controller 300 .

[0049] Among them, the rear axle assembly 100 includes a rear axle housing 1 containing oil, a reducer 2 connected to the rear axle housing 1 and an oil suction component 3, the oil suction component 3 is used to drive the oil to flow to the bearing 20 of the input shaft of the reducer 2; the sensor component 3 is used to detect the rear axle state detection signal; the controller 300 is connected to the sensor component 200 and the oil suction component 3, and is used to control the oil suction component 3 according to the control method of the rear axle assembly provided in an embodiment of the present invention.

[0050] In the embodiment, the embodiment of the present invention adds an oil suction component 3 to the rear axle assembly 100, and controls the oil suction component 3 to work through the controller 200 to transfer oil to the bearing 20, so that there is no need to rely solely on gear stirring to drive the oil flow to lubricate the bearing. Specifically, when the controller inputs the rear axle state detection signal of the bearing 20 to determine that the input bearing 20 is short of oil, for example, the running condition of the vehicle can be judged according to the rear axle tilt angle signal, the rear axle elevation angle signal and the oil pressure signal in the oil chamber. When it is determined that the vehicle is driving on a steep slope according to the rear axle tilt angle signal, or the rear axle elevation angle of the vehicle is large according to the rear axle elevation angle signal, or the oil pressure signal determines that the rear axle is short of oil, the controller will send a control instruction to the oil suction component 3. The oil suction component 3 responds to the control instruction and drives the oil to flow to the bearing 20, so as to achieve lubrication and heat dissipation of the bearing, avoid the problem of overheating and ablation caused by lack of oil lubrication of the rear axle input end bearing during the operation of the vehicle, ensure the normal operation of the vehicle, and ensure the driving safety of the user.

[0051] The rear axle tilt angle signal refers to an angle signal indicating that the rear axle tilts to the left or right due to the road conditions on which the vehicle is traveling. The rear axle elevation angle signal refers to an elevation angle signal indicating that the rear axle tilts to the front or rear due to the road conditions on which the vehicle is traveling.

[0052] According to the vehicle 1000 of the embodiment of the present invention, by adding an oil suction component 3 in the rear axle assembly 100, when it is determined that the bearing 20 is short of oil according to the rear axle state detection signal, in order to avoid the burning of the rear axle input bearing 20, the oil suction component 3 is controlled to operate, so as to drive the oil of the rear axle housing 1 to the input bearing 20, so as to achieve lubrication and heat dissipation of the bearing, thereby avoiding the problem of overheating and burning of the rear axle input end bearing 20 due to lack of oil lubrication, ensuring the normal operation of the vehicle, and no manual operation is required, thereby improving the intelligence of use and enhancing the user experience.

[0053] In some embodiments, the sensor assembly 200 includes at least one of the following: a first angle sensor for detecting a rear axle tilt angle signal; a second angle sensor for detecting a rear axle elevation angle signal of the rear axle assembly; and a pressure sensor for detecting an oil pressure signal in the rear axle assembly.

[0054] In some embodiments, Figure 1 As shown, the vehicle 1000 also includes a prompting device 400, which is connected to the controller 300 and is used to give a prompt according to the alarm signal so that the driver can understand the status of the rear axle assembly 100 in real time, thereby improving the user's perception and driving pleasure.

[0055] In some embodiments, the prompt device 300 is a vehicle instrument. When the controller of the rear axle assembly 100 determines that any one of the following conditions is satisfied: the rear axle inclination angle signal is greater than a preset inclination angle threshold, the rear axle elevation angle signal is greater than a preset elevation angle threshold, and the oil pressure signal in the oil chamber is less than a preset pressure threshold, the controller sends an alarm signal to the vehicle instrument for display on the vehicle instrument so that the driver can promptly understand the status of the rear axle assembly 100.

[0056] In some embodiments, Figure 2 As shown, the rear axle assembly 100 includes a rear axle housing 1, a rear final reducer 2, an oil suction assembly 3 and a controller.

[0057] The rear axle housing 1 defines an oil chamber containing oil, so that the oil in the oil chamber can play a role of lubrication and heat dissipation.

[0058] like Figure 3-Figure 5 As shown, the reducer 2 includes a main reducer housing 21 , which defines a first oil passage 22 and a receiving chamber 210 communicating with the first oil passage. A first end of the first oil passage 22 communicates with the oil chamber, and a second end of the first oil passage 22 leads to the bearing 20 .

[0059] like Figure 2 and Figure 3 As shown, the oil suction assembly 3 is connected to the reducer 2 and is used to drive the oil to flow from the first end of the first oil passage 22 to the second end of the first oil passage 22 .

[0060] The controller 300 and the oil suction assembly 3 are used to control the operation of the oil suction assembly 3 according to the rear axle tilt angle signal, the rear axle elevation angle signal and the oil pressure signal in the oil chamber. Thus, the oil suction assembly 3 is controlled by the controller 300 without manual operation, thereby improving the intelligence of use and enhancing the user experience.

[0061] In the embodiment, the embodiment of the present invention adds an oil suction component 3 to the rear axle assembly 100, and controls the oil suction component 3 to work through the controller 300 to transfer oil to the bearing 20, so that there is no need to rely solely on gear stirring to drive the oil flow to lubricate the input end bearing. Specifically, the controller determines the running condition of the vehicle according to the rear axle tilt angle signal, the rear axle elevation angle signal and the oil pressure signal in the oil chamber. When it is determined that the vehicle is driving on a steep slope according to the rear axle tilt angle signal, or the rear axle elevation angle of the vehicle is large according to the rear axle elevation angle signal, or the oil pressure signal determines that the rear axle is insufficient, the controller will send a control command to the oil suction component 3. The oil suction component 3 responds to the control command and sucks the oil in the oil chamber to the bearing 20 through the first oil channel 22, thereby achieving lubrication and heat dissipation of the bearing, avoiding the problem of overheating and ablation caused by lack of lubrication of the input end bearing of the rear axle due to the large rear axle elevation angle or the bad road conditions, ensuring the normal operation of the vehicle and the driving safety of the user.

[0062] According to the rear axle assembly 100 of the embodiment of the present invention, by adding an oil suction component 3, when the rear axle is in a severe working condition with a large inclination angle or going up a steep slope, a control instruction is sent to the oil suction component 3 through a controller, and the oil suction component 3 starts to operate to drive the oil in the oil chamber to the bearing, thereby achieving lubrication and heat dissipation of the bearing, thereby avoiding the problem of overheating and ablation caused by lack of lubrication of the rear axle input end bearing due to the large rear axle inclination angle or severe road conditions, thereby ensuring the normal operation of the vehicle.

[0063] In some embodiments, Figure 6 As shown, the oil suction assembly 3 includes a motor 31 , a turbine 32 , a worm shaft 33 and a fan wheel 34 .

[0064] The motor 31 is connected to the controller 300; the turbine 32 is connected to the output shaft of the motor 31 through the worm 33; the fan wheel 34 is connected to the turbine 32 through the fan wheel shaft 340, and the fan wheel 34 is arranged in the accommodating chamber 210 to drive the oil in the first oil passage 22 to flow. Thus, the oil suction assembly 3 can be formed by connecting the above parts, and the process is simple to manufacture, easy to assemble, low in cost, does not require too much manpower cost and time, and is simple to implement.

[0065] In the embodiments, reference Figure 5 As shown, a first oil passage 22 is added to one side of the main reducer housing 21, such as the left side. One end of the first oil passage 22 is connected to the oil chamber, and the other end is connected to the bearing 20, and a cavity 210 for accommodating the fan-shaped wheel 34 is formed at the bearing 20. According to this arrangement, when the oil suction assembly 3 is started and operated, the fan-shaped wheel 34 is driven in the accommodating chamber 210, so that the oil flows from the first end of the first oil passage 22 to the second end of the first oil passage 22, so as to achieve the effect of lubricating and dissipating heat for the input end bearing.

[0066] Specifically, Figure 6 As shown, a shaft is connected to one end of the motor 31, and a spiral thread is provided at the outer end of the shaft to form a worm 33. After the shaft is connected to the gear, a turbine worm structure is formed. A shaft, i.e., a fan-shaped wheel shaft 340, is connected to the middle of the gear, and a fan-shaped wheel 34 is installed at the outer end of the fan-shaped wheel shaft 340. Thus, the motor 31 is controlled to work by the controller, and the motor 31 drives the worm 33 to rotate when it is running. At the same time, the turbine 32 connected to the worm 33 will also rotate accordingly, and the fan-shaped wheel 34 connected thereto will be driven to rotate together through the fan-shaped wheel shaft 340. The fan-shaped wheel 34 is in the accommodating cavity 210. Due to the suction force of the rotation, the oil in the oil cavity will be driven to flow along the first oil channel 22 and directly reach the bearing 20, thereby achieving the effect of lubricating and cooling the bearing.

[0067] In some embodiments, Figure 5 As shown, a turbine mounting support 211 and a shaft hole 212 communicating with the accommodating chamber 210 are provided at the position corresponding to the bearing 20 on the outer side of the main reducer housing 21, and the turbine 32 can be mounted on the turbine mounting support 211 to play a fixing role, and, as shown in FIG. Figure 4 As shown, the first end of the sector wheel shaft 340 passes through the shaft hole 212 and is connected to the sector wheel 34 .

[0068] In some embodiments, Figure 5 As shown, three turbine mounting holes 214 are arranged on the turbine mounting support 211. The three turbine mounting holes 214 are in a protruding three-point standing arrangement. Such a structural arrangement can save materials and reduce costs, and can also improve the stability of the oil suction assembly 3.

[0069] In some embodiments, Figure 5 As shown, the main reducer housing 21 further defines a second oil passage 215, a first end of the second oil passage 215 is communicated with the oil chamber, and a second end of the second oil passage 215 leads to the bearing 20. With this structure, in the case where the oil can reach the bearing position only by relying on the stirring of the gear, the oil can be transmitted through the second oil passage 215 without starting the oil suction assembly 3, thereby reducing the number of times the oil suction assembly 3 is used and increasing the service life of the oil suction assembly 3.

[0070] In some embodiments, the controller 300 is used to send a control signal when it is determined that any one of the following conditions is met: the rear axle inclination angle signal is greater than a preset inclination angle threshold, the rear axle elevation angle signal is greater than a preset elevation angle threshold, and the oil pressure signal in the oil chamber is less than a preset pressure threshold; and to send an alarm signal when it is determined that the oil pressure signal is less than a preset pressure threshold.

[0071] Specifically, sensors can be set to detect the rear axle tilt angle signal, the rear axle elevation angle signal and the oil pressure signal in the oil chamber in real time, and transmit the detected signals to the controller. When the rear axle tilt angle signal is greater than the preset tilt angle threshold, it means that the vehicle tilt angle is too large, and the current vehicle is traveling on a steep road; when the rear axle elevation angle signal is greater than the preset elevation angle threshold, it means that the rear axle elevation angle is too large; when the oil pressure signal is less than the preset pressure threshold, it means that the oil in the rear axle is insufficient. Therefore, when the controller 300 determines that any one of the following conditions is satisfied: the rear axle tilt angle signal is greater than the preset tilt angle threshold, the rear axle elevation angle signal is greater than the preset elevation angle threshold, and the oil pressure signal in the oil chamber is less than the preset pressure threshold, the control signal is sent to the oil suction component 3 to control the oil suction component 3 to work. The oil suction component 3 starts to run, and drives the oil in the oil chamber to the bearing 20 of the input shaft to achieve lubrication and heat dissipation of the bearing, thereby avoiding the problem of overheating and ablation caused by lack of lubrication of the rear axle input end bearing due to a large rear axle elevation angle or bad road conditions, and ensuring the normal operation of the vehicle 1000.

[0072] In addition, when it is determined that the oil pressure signal is less than the preset pressure threshold, an alarm signal is issued to serve as a reminder, so that the user can replenish the oil in time.

[0073] In summary, according to the vehicle 1000 of the embodiment of the present invention, an oil suction component 3 is additionally provided in the rear axle assembly 100. After analyzing the vehicle state through the controller, the motor 31 in the oil suction component 3 is controlled to work to realize the transmission of oil. Therefore, when the rear axle of the vehicle has a large elevation angle or is in a severe working condition of climbing a steep slope or there is less oil in the oil chamber, the controller 300 will control the oil suction component 3 to work according to the rear axle inclination angle signal, the rear axle elevation angle signal and the oil pressure signal in the oil chamber, and the oil in the oil chamber is sucked to the position of the input end bearing 20 through the first oil passage 22 of the main reducer housing 21 to realize the lubrication and heat dissipation of the bearing, avoid the problem that the rear axle assembly is damaged and the vehicle cannot operate normally, and when the oil is insufficient, that is, the oil pressure signal is less than the preset pressure threshold, an alarm signal is issued to remind the driver to add oil in time to avoid the burning of the bearing in the rear axle and damage to the vehicle.

[0074] Please refer to the following Figure 7 The control method of the rear axle assembly provided by the embodiment of the present invention is described, wherein the rear axle assembly includes a rear axle housing containing oil, a reducer connected to the rear axle housing, and an oil suction assembly, the oil suction assembly is used to drive the oil to flow to the bearing of the reducer input shaft, such as Figure 7 As shown, the control method at least includes step S1-step S2.

[0075] Step S1, obtaining a rear axle status detection signal.

[0076] Step S2, judging whether the input bearing meets the bearing operating conditions according to the rear axle state detection signal.

[0077] Step S3: If the bearing does not meet the bearing operating conditions, the oil suction assembly is controlled to operate to absorb the oil in the rear axle housing to the bearing.

[0078] Specifically, if the bearing does not meet the bearing operating conditions, it means that the bearing lacks oil during operation. In this case, in order to avoid overheating and burning caused by lack of oil lubrication of the rear axle input end bearing, the oil suction assembly is controlled to drive the oil to flow to the bearing of the reducer input shaft, thereby achieving lubrication and heat dissipation of the bearing and ensuring the normal operation of the vehicle.

[0079] According to the control method of the rear axle assembly of the embodiment of the present invention, by adding an oil suction component in the rear axle assembly, when it is determined according to the rear axle state detection signal that the bearing does not meet the bearing operating conditions, that is, the bearing is short of oil, in order to avoid burning of the rear axle input bearing, the oil suction component is controlled to operate so as to drive the oil in the oil chamber to the bearing of the input shaft to achieve lubrication and heat dissipation of the bearing, thereby avoiding the problem of overheating and burning caused by lack of oil lubrication of the rear axle input end bearing during vehicle operation, thereby ensuring the normal operation of the vehicle.

[0080] In some embodiments, the rear axle state detection signal includes at least one of a rear axle tilt angle signal, a rear axle elevation angle signal, and an oil pressure signal in the rear axle assembly. When it is determined according to the rear axle state detection signal that the bearing does not meet the bearing operating conditions, i.e., the bearing is short of oil, the oil suction component is controlled to operate, such as Figure 8 As shown, this can be accomplished through the following steps.

[0081] Step S4, obtaining a rear axle tilt angle signal, a rear axle elevation angle signal and an oil pressure signal of the rear axle assembly.

[0082] The rear axle tilt angle signal refers to an angle signal indicating that the rear axle tilts to the left or right due to the road conditions on which the vehicle is traveling. The rear axle elevation angle signal refers to an elevation angle signal indicating that the rear axle tilts to the front or rear due to the road conditions on which the vehicle is traveling.

[0083] In an embodiment, a sensor may be provided to respectively detect a rear axle tilt angle signal, a rear axle elevation angle signal and an oil pressure signal in the oil chamber in real time, and transmit the detected signals to a controller.

[0084] Step S5, when it is determined that any one of the following conditions is met: the rear axle tilt angle signal is greater than a preset tilt angle threshold, the rear axle elevation angle signal is greater than a preset elevation angle threshold, and the oil pressure signal is less than a preset pressure threshold, the oil suction assembly is controlled to operate.

[0085] In the embodiment, in order to avoid the problem that the oil cannot reach the bearing position due to the excessive inclination angle of the rear axle and cause damage to the rear axle assembly, the embodiment of the present invention adds an oil suction component in the rear axle assembly, so that when the vehicle tilt angle is too large or the rear axle inclination angle is too large or the gear oil in the rear axle is insufficient, the oil suction component can be started to drive the oil in the oil chamber to the bearing at the input end, so that the input end bearing remains well lubricated and any ablation is prevented.

[0086] Specifically, when the rear axle tilt angle signal is greater than the preset tilt angle threshold, it means that the vehicle tilt angle is too large, and the current vehicle is traveling on a steep road; when the rear axle elevation angle signal is greater than the preset elevation angle threshold, it means that the rear axle elevation angle is too large; when the oil pressure signal is less than the preset pressure threshold, it means that the oil in the rear axle is insufficient. Therefore, when the controller determines that any one of the following conditions is satisfied: the rear axle tilt angle signal is greater than the preset tilt angle threshold, the rear axle elevation angle signal is greater than the preset elevation angle threshold, and the oil pressure signal in the oil chamber is less than the preset pressure threshold, the oil suction assembly is controlled to operate. The oil suction assembly starts running and drives the oil in the oil chamber to the bearing at the input end to achieve lubrication and heat dissipation of the bearing, so that the vehicle can move smoothly under various complex and harsh road conditions, especially when the vehicle continues to climb a steep slope or other conditions with a large elevation angle, or when the rear axle gear oil is insufficient but cannot be refueled in time, the oil can also be transmitted to the input end bearing without causing the problem of bearing burning due to poor lubrication of the input end bearing, and the rear axle will not be damaged and unable to move, which greatly improves the service life of the rear axle assembly and the safety of the driver.

[0087] In some embodiments, the rear axle status detection signal may also include a bearing temperature detection signal in the rear axle assembly. Specifically, when the bearing is short of oil, the temperature at the bearing will gradually rise as the bearing runs. Therefore, when the bearing temperature detection signal is greater than a preset temperature threshold, it can be determined that the bearing does not meet the bearing operating conditions. In this case, in order to avoid the problem of bearing burning due to continued increase in bearing temperature, it is necessary to control the operation of the oil suction component to absorb the oil in the rear axle housing to the bearing to achieve lubrication and heat dissipation of the bearing.

[0088] In some embodiments, the control method also includes comparing the oil pressure signal with a preset pressure threshold. If the oil pressure signal is less than the preset pressure threshold, an alarm signal is sent, such as to a vehicle instrument, so that the driver can understand the status of the rear axle assembly in real time, thereby enhancing user perception and driving pleasure.

[0089] In some embodiments, the control method also includes determining whether the bearing meets the bearing operating conditions based on the rear axle status detection signal, and sending a bearing status signal, such as to a vehicle instrument, so that the driver can understand the working status of the bearing in real time.

[0090] In some embodiments, the control method also includes if the input bearing meets the bearing operating conditions, it means that there is sufficient oil at the bearing. In this case, it means that the oil can reach the bearing position only by relying on gear stirring, and there is no need to start the oil suction component again, so as to control the oil suction component to stop running, so as to reduce the number of times the oil suction component is used and increase the service life of the oil suction component.

[0091] According to the rear axle assembly control method of an embodiment of the present invention, when the rear axle is in a severe working condition with a large inclination angle or going up a steep slope, the oil suction component in the rear axle assembly starts to operate to drive the oil in the oil chamber to the bearing of the input shaft, thereby achieving lubrication and heat dissipation of the bearing, avoiding the problem of overheating and ablation of the rear axle input end bearing due to lack of lubrication due to the large rear axle inclination angle or severe road conditions, and ensuring the normal operation of the vehicle.

[0092] A second aspect of the present invention provides a control device for a rear axle assembly, wherein the rear axle assembly includes a rear axle housing containing oil, a reducer connected to the rear axle housing, and an oil suction assembly, wherein the oil suction assembly is used to drive the oil to flow to the bearing of the reducer input shaft, such as Fig. 9 As shown, the control device 10 includes an acquisition module 4 , a judgment module 5 and a control module 6 .

[0093] Among them, the acquisition module 4 is used to obtain the rear axle status detection signal; the judgment module 5 is used to judge whether the bearing meets the bearing operating conditions according to the rear axle status detection signal; the control module 6 is used to control the operation of the oil suction component to absorb the oil in the rear axle housing to the bearing if the bearing does not meet the bearing operating conditions.

[0094] It should be noted that the specific implementation method of the control device 10 of the rear axle assembly in the embodiment of the present invention is similar to the specific implementation method of the control method of the rear axle assembly in any of the above-mentioned embodiments of the present invention. Please refer to the description of the method part for details. In order to reduce redundancy, it will not be repeated here.

[0095] According to the control device 10 of the rear axle assembly of the embodiment of the present invention, by adding an oil suction component in the rear axle assembly, when it is determined according to the rear axle state detection signal that the input bearing does not meet the bearing operating conditions, that is, the bearing is short of oil, in order to avoid the burning of the rear axle input bearing, the oil suction component is controlled to operate so as to drive the oil in the oil chamber to the bearing to achieve lubrication and heat dissipation of the bearing, thereby avoiding the problem of overheating and burning caused by lack of oil lubrication of the rear axle input end bearing, thereby ensuring the normal operation of the vehicle.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0097] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A control method for a rear axle assembly, characterized in that: The rear axle assembly includes a rear axle housing containing oil, a reducer connected to the rear axle housing, and an oil suction assembly, the reducer includes a main reducer housing, the main reducer housing defines a first oil passage and a receiving chamber connected to the first oil passage, a first end of the first oil passage is connected to the oil chamber, and a second end of the first oil passage leads to a bearing, the oil suction assembly includes a motor, a turbine, a worm shaft, and a fan wheel, the turbine is connected to the output shaft of the motor through the worm shaft; the fan wheel is connected to the turbine through the fan wheel shaft, and the fan wheel is arranged in the receiving chamber to drive the oil in the first oil passage to flow, and the control method includes: Acquire a rear axle state detection signal, wherein the rear axle state detection signal includes at least one of a rear axle tilt angle signal, a rear axle elevation angle signal, and an oil pressure signal in the rear axle assembly; judging whether the bearing meets the bearing operation condition according to the rear axle state detection signal; If the bearing does not meet the bearing operating condition, controlling the motor of the oil suction assembly to operate so as to absorb the oil in the rear axle housing to the bearing; Wherein, judging whether the bearing meets the bearing operation condition according to the rear axle state detection signal includes: When any one of the rear axle tilt angle signal is greater than a preset tilt angle threshold, the rear axle elevation angle signal is greater than a preset elevation angle threshold, and the oil pressure signal is less than a preset pressure threshold, the bearing does not meet the bearing operating condition.

2. The control method of the rear axle assembly according to claim 1, characterized in that: The control method further comprises: The oil pressure signal is compared with the preset pressure threshold, and if the oil pressure signal is less than the preset pressure threshold, an alarm signal is sent.

3. The control method of the rear axle assembly according to claim 1, characterized in that: The control method further comprises: It is determined whether the bearing meets the bearing operating conditions according to the rear axle status detection signal, and a bearing status signal is sent at the same time.

4. The control method of the rear axle assembly according to claim 1 or 3, characterized in that: The control method further comprises: If the bearing meets the bearing operating condition, the oil suction assembly is controlled to stop operating.

5. A control device for a rear axle assembly, characterized in that: The rear axle assembly includes a rear axle housing containing oil, a reducer connected to the rear axle housing, and an oil suction assembly, the reducer includes a main reducer housing, the main reducer housing is defined with a first oil passage and a receiving chamber connected to the first oil passage, a first end of the first oil passage is connected to the oil chamber, and a second end of the first oil passage leads to a bearing, the oil suction assembly includes a motor, a turbine, a worm shaft, and a fan wheel, the turbine is connected to the output shaft of the motor through the worm shaft, the fan wheel is connected to the turbine through the fan wheel shaft, and the fan wheel is arranged in the receiving chamber to drive the oil in the first oil passage to flow, and the control device includes: An acquisition module, used for a rear axle state detection signal, wherein the rear axle state detection signal includes at least one of a rear axle tilt angle signal, a rear axle elevation angle signal and an oil pressure signal in a rear axle assembly; a judgment module, configured to judge whether the bearing meets the bearing operation condition according to the rear axle state detection signal, wherein when any one of the rear axle tilt angle signal is greater than a preset tilt angle threshold, the rear axle elevation angle signal is greater than a preset elevation angle threshold, and the oil pressure signal is less than a preset pressure threshold, the bearing does not meet the bearing operation condition; The control module is used for controlling the oil suction assembly to operate and absorb the oil in the rear axle housing to the bearing if the bearing does not meet the bearing operating condition.

6. A vehicle, characterized in that: include: A rear axle assembly, the rear axle assembly comprising a rear axle housing containing oil, a reducer connected to the rear axle housing, and an oil suction assembly, the oil suction assembly being used to drive the oil to flow to a bearing of an input shaft of the reducer; A sensor component, the sensor component is used to detect a rear axle state detection signal; A controller is connected to the sensor assembly and the oil suction assembly, and is used to control the oil suction assembly according to the control method according to any one of claims 1 to 4.

7. The vehicle according to claim 6, characterized in that The sensor assembly includes at least one of the following: A first angle sensor, used for detecting a rear axle tilt angle signal; A second angle sensor, used for detecting a rear axle elevation angle signal of the rear axle assembly; The pressure sensor is used to detect the oil pressure signal in the rear axle assembly.

8. The vehicle according to claim 6, characterized in that The vehicle further comprises: A prompting device is connected to the controller and is used for providing a prompt according to the alarm signal.

Images