Hub Lubricating Oil Quality Monitoring System

Abstract

The present invention provides a wheel hub lubricating oil quality monitoring system, belonging to the technical field of wheel hub detection. It solves the problem of how to monitor the quality of the lubricating oil at the wheel end very troublesome. An oil cavity is formed by surrounding between the base of the present application and the wheel hub housing, and an oil inlet ring groove communicating with the oil cavity is also opened on the base. Under normal circumstances, the oil inlet ring groove is filled with lubricating oil. This monitoring system is a pair of LED lights and a transmitted light sensor. The LED lights provide a light source. The light source passes through the lubricating oil and then passes through the second light-transmitting sheet and is captured and imaged by the transmitted light sensor. Under the condition of the same light source intensity, the quality of the lubricating oil is judged according to the light transmission situation of the lubricating oil. In this way, it is very convenient to monitor the state of the lubricating oil directly at the wheel end and monitor the quality of the lubricating oil.

Description

Technical Field

[0001] The present invention belongs to the technical field of hub detection, and relates to a monitoring system, in particular to a monitoring system for the oil quality of hub lubricating oil. Background Art

[0002] After long-term operation, impurities will be mixed into the lubricating oil and grease inside the hub at the wheel end, resulting in the lubricating medium becoming turbid or even containing impurities, which reduces the lubrication effect of the lubricating medium itself, and further causes abnormal operation or even failure of the hub bearing. If the driver fails to detect it in time, it will cause vehicle abnormal noise failure at least, and wheel operation failure and vehicle out of control at worst, with serious consequences.

[0003] Therefore, in order to avoid the above problems, it is often necessary for people to regularly check and maintain the medium state at the wheel end. The existing method for checking oil-lubricated hubs is to observe the state of the lubricating oil through the transparent window on the end cover housing. If the lubricating oil is emulsified or severely deteriorated, new lubricating oil needs to be replaced. This method requires stopping the vehicle for inspection. If the driver forgets to check, it may lead to serious consequences. In order to reduce the failure of the hub caused by human factors, a real-time monitoring system is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a monitoring system for the oil quality of hub lubricating oil to solve the technical problem that it is very troublesome to monitor the oil quality of the lubricating oil inside the existing hub at the wheel end.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] Hub lubricating oil quality monitoring system, the hub includes an end cover housing, an axle head nut, a bearing, a spacer sleeve and a oil seal. A base is fixed on the end cover housing, and a gland for sealing is fixed on the base. There is an oil passage inside the end cover housing. An oil cavity communicating with the oil passage is formed by surrounding between the base and the end cover housing. The gland is fixed on the side opposite to the oil cavity. It is characterized in that a frustum is protruded on one side of the base where the oil cavity is located, and a ring platform is protruded on the outside of the base where the frustum is located. There is an annular oil inlet ring groove communicating with the oil cavity between the frustum and the ring platform. The frustum, the ring platform and the oil inlet ring groove are all concentrically arranged. This oil quality monitoring system includes a number of pairs of transmissive light sensors and LED lights. A number of evenly spaced windows one are opened along the circumferential direction on the inner side wall of the ring platform. At each window one, a light transmissive sheet one made of a transparent material and closing the window one is fixed. The LED lights are all located inside the ring platform and an LED light is arranged corresponding to each window one. On the outer peripheral surface of the frustum, windows two are opened at positions opposite to each window one. At each window two, a light transmissive sheet two made of a transparent material and closing the window two is fixed. The transmissive light sensors are all located inside the frustum and a transmissive light sensor is arranged corresponding to each window two.

[0007] An oil cavity is formed by surrounding between the base and the end cover housing of this monitoring system. An oil inlet ring groove communicating with the oil cavity is also opened on the base. Under normal circumstances, the oil inlet ring groove is filled with lubricating oil. This monitoring system also includes pairs of LED lights and transmissive light sensors. The LED lights provide a light source. The light source transmits through the lubricating oil and then passes through the light transmissive sheet two and is captured and imaged by the transmissive light sensor. Under the condition of the same light source intensity, the quality of the oil is judged according to the turbidity of the lubricating oil. In this way, the state of the lubricating oil can be directly monitored at the wheel end, which is very convenient for monitoring the quality of the lubricating oil.

[0008] The specific monitoring method of this application is to set a ring platform and a frustum on the base on one side of the oil cavity. The inside of the ring platform is used to install the LED lights, and the inside of the frustum is used to install the transmissive light sensors. A number of light transmissive sheets one are embedded on the inner wall of the ring platform. Light transmissive sheets two corresponding to the light transmissive sheets are arranged on the outer periphery of the frustum. Both the light transmissive sheet one and the light transmissive sheet two can isolate the lubricating oil, keeping the LED lights and the transmissive light sensors not in contact with the lubricating oil. Moreover, the light emitted by the LED lights can pass through the light transmissive sheet one and penetrate through the oil in the oil inlet ring groove and then pass through the light transmissive sheet two and be captured by the transmissive light sensor. Such a design is very convenient for monitoring the quality of the lubricating oil on the wheel end. It should be noted that the light transmissive sensor includes an optical sensor and a corresponding circuit board, which can sensitively capture the light signal and convert it into an electrical signal. This can be directly purchased on the market and will not be elaborated here.

[0009] In the above-mentioned hub lubricating oil quality monitoring system, a window three is opened at the bottom of the oil inlet ring groove between each pair of window one and window two. A light-transmitting sheet three made of a transparent material and closing the window three is fixed at the window three, and a refracted light sensor is arranged in the base corresponding to each window three.

[0010] In this application, a light-transmitting sheet three is also provided at the bottom of the oil inlet ring groove, and a refracted light sensor is arranged on the base. The transmitted light sensor and the LED lamp are oppositely arranged to capture the transmitted light. The refracted light sensor is located between the transmitted light sensor and the LED lamp and can vertically capture the refracted light. Lubricating oils of different qualities have different refractive indices and transmittances for light. The transmitted light sensor and the refracted light sensor can capture the transmitted and refracted light of the light source emitted by the LED lamp entering the lubricating oil in the oil inlet ring groove from two angles, which can be used to more intuitively observe and judge the oil quality. In this way, the monitoring is simple and very intuitive and clear. The refracted light sensor is composed of an optical sensor and a corresponding circuit board, which can sensitively capture the optical signal and convert it into an electrical signal. This can be directly purchased on the market and will not be elaborated here.

[0011] In the above-mentioned hub lubricating oil quality monitoring system, support columns protrude from both sides of each window one on the side wall of the oil inlet ring groove. Electrode columns are arranged inside the support columns. A metal disc is arranged in the oil cavity. The outer edge of the metal disc is fixed to all the support columns. Electrode columns are arranged inside the support columns and are electrically connected to the metal disc. A PCS circuit board detection module is arranged between the gland and the base. The PCS circuit board detection module includes an integrated circuit board and a processor, and the guide is electrically connected to the integrated circuit board.

[0012] In this application, support columns are arranged on both sides of each window one in the oil inlet ring groove. The support columns can block the positions on both sides of each window one so that the light emitted by the LED lamp in the window one can more intensively penetrate the lubricating oil and enter the window two to be captured by the transmitted sensor. Such a design is clearer and more intuitive and convenient for monitoring.

[0013] The function of the support column is not only to gather the light of the LED lamp, but also to install and fix the metal disc. The metal disc can conduct the temperature of the lubricating oil in the oil cavity, and the height of the lubricating oil level in the oil cavity will directly change the capacitance of the metal disc, which is then conducted to the integrated circuit board through the electrode column and then feedback to the processor. The temperature and oil level of the lubricating oil are monitored by directly conducting electricity and heat through the metal disc electrode column. Such a design is very convenient for monitoring and has very high practicality, and makes the support column serve two purposes, with a very ingenious structure.

[0014] In the above-mentioned hub lubricating oil quality monitoring system, a circular convex portion protrudes at the position of the base corresponding to the oil inlet ring groove on the side where the gland is located. Three mounting grooves are provided at corresponding positions of the circular convex portion for each window, and the refraction light sensors are all located in the mounting grooves. The integrated circuit board is located above the circular convex portion, and the refraction light sensors are all electrically connected to the integrated circuit board.

[0015] There is a circular convex portion on the back of the oil inlet ring groove on the base. There are several separate mounting grooves for the refraction light sensors on the circular convex portion. Each refraction light sensor is separately installed and embedded in the mounting groove and electrically connected to the integrated circuit board. In this way, each refraction light sensor can be better supported when the hub rotates and runs more stably. The distance between the integrated circuit board and the refraction light sensors is very short, improving the overall stability.

[0016] In the above-mentioned hub lubricating oil quality monitoring system, a sunken circular groove is provided on the base at the position corresponding to the ring platform on the side where the gland is located. A clamping block is provided in front of each window one in the circular groove. The clamping block surrounds the front of the window one, and each clamping block is provided with a slot. The LED lamp is pluggably connected in the slot, and all the LED lamps are electrically connected to the integrated circuit board.

[0017] A circular groove is provided at the back of the ring platform, and a clamping block for fixing the LED lamp is provided in the circular groove. The clamping block surrounds the front of the window one and can surround and block the periphery of the window one. In this way, the LED lamp is installed in the slot on the clamping block, and the clamping block can play a further role in concentrating light, making the light source irradiation more concentrated, enabling more light energy to pass through the lubricating oil and be captured by the transmitted light sensor, making the monitoring effect better and the monitoring more convenient. Each LED lamp has a separate control switch and is controlled by the integrated circuit board.

[0018] In the above-mentioned hub lubricating oil quality monitoring system, a sunken mounting groove is provided on the base at the position corresponding to the frustum on the side where the gland is located. A clamping groove is provided on the inner wall of the mounting groove at the position corresponding to each window two. The transmitted light sensor is clamped in the clamping groove and is directly opposite to the window two. All the transmitted light sensors are electrically connected to the integrated circuit board.

[0019] In the above-mentioned hub lubricating oil quality monitoring system, the windows one on the frustum are arranged in pairs and are symmetrically arranged with the axis of the frustum as the center. The windows two and three are also arranged in pairs.

[0020] One transmissive light sensor, one refractive light sensor and one LED lamp form a group, and multiple groups of transmissive light sensors, refractive light sensors and LED lamps are arranged on the base. In this application, it is designed that each group of transmissive light sensors, refractive light sensors and LED lamps has corresponding symmetric transmissive light sensors, refractive light sensors and LED lamps. In this way, when the wheel hub rotates, the centrifugal forces of the two symmetric groups of transmissive light sensors, refractive light sensors and LED lamps can cancel each other out, making the entire monitoring system operate more stably.

[0021] In the above-mentioned wheel hub lubricating oil quality monitoring system, the integrated circuit board is in a ring structure and its outer edge shields above the annular groove. The processor is welded on the integrated circuit board. A power supply assembly is fixed on the outer periphery of the wheel hub, and the power supply assembly and the processor are distributed on both sides of the axis of the wheel hub.

[0022] The integrated circuit board of this application is in a ring structure, and the processor is spot-welded on the integrated circuit board. The power of the entire system is supplied by an external power supply assembly, which is convenient for replacing the power supply assembly. Moreover, the position of the power supply assembly and the position of the processor are relatively set to counteract the centrifugal force when the wheel hub rotates, making the monitoring system more stable.

[0023] In the above-mentioned wheel hub lubricating oil quality monitoring system, the outer edge of the metal disk shields above the oil inlet ring groove.

[0024] The metal disk can not only conduct heat and capacitance changes for monitoring the lubricating oil temperature and oil level, but also, with its disk-shaped structure shielding above the oil inlet ring groove, can cooperate with the support column to shield above the oil inlet ring groove, making the light source emitted from window one more concentrated to penetrate and refract through the lubricating oil and be captured by the transmissive light sensor and the refractive light sensor. This design has a better monitoring effect and is very convenient for monitoring.

[0025] In the above-mentioned wheel hub lubricating oil quality monitoring system, there are two metal disks arranged in parallel with each other. Both metal disks are fixed to the support column and are electrically connected to the electrode columns on different support columns.

[0026] Compared with the prior art, the advantages of this product are as follows:

[0027] 1. This monitoring system is equipped with paired LED lamps and transmissive light sensors. The LED lamps provide the light source, and the transmissive light sensors capture the light source passing through the lubricating oil and convert the optical signal into an electrical signal. The quality of the oil is judged according to the light transmission condition of the lubricating oil. In this way, the state of the lubricating oil can be directly observed at the wheel end, which is very convenient for monitoring the quality of the lubricating oil.

[0028] 2. A light-transmitting sheet three is also provided at the bottom of the oil inlet ring groove of the present application. A refracted light sensor is arranged on the base. The transmitted light sensor and the LED lamp are arranged opposite to each other, and the refracted light sensor is located between the transmitted light sensor and the LED lamp and can capture refracted light. The transmitted light sensor and the refracted light sensor can capture the light transmission condition of the lubricating oil in the oil inlet ring groove from two angles, which can be used to more intuitively observe and judge the oil quality. In this way, the monitoring is simple and very intuitive and clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a half-sectional view of the present invention;

[0030] Figure 2 is the present invention in Figure 1 partial enlarged view at A;

[0031] Figure 3 is an exploded view of the present invention;

[0032] Figure 4 is a side view of the base of the present invention;

[0033] Figure 5 is another perspective view of the base of the present invention.

[0034] In the figure, 1, hub; 11, gland; 12, base; 121, window three; 122, light-transmitting sheet three; 123, support column; 124, annular convex part; 125, installation groove three; 126, annular groove; 127, clamping block; 128, slot; 129, installation groove; 130, clamping groove; 13, oil cavity; 14, frustum; 141, window two; 142, light-transmitting sheet two; 15, ring platform; 151, window one; 152, light-transmitting sheet one; 16, oil inlet ring groove; 17, axle head nut; 18, spacer sleeve; 19, bearing; 2, oil seal; 3, end cover housing; 31, oil passage; 4, transmitted light sensor; 5, refracted light sensor; 6, LED lamp; 7, electrode post; 8, metal disc; 9, integrated circuit board; 91, processor; 92, power supply assembly. DETAILED DESCRIPTION OF THE INVENTION

[0035] The following are specific embodiments of the present invention and in conjunction with the drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0036] Such as Figures 1 - 5The hub lubricating oil quality monitoring system shown in the figure. The hub 1 includes an end cover housing 3, an axle head nut 17, a spacer sleeve 18, a bearing 19, an oil seal 2, a gland 11 and a base 12. The inner side of the end cover housing 3 has an oil passage 31. The base 12 is fixed on the end cover housing 3 and encloses an oil chamber 13 with the end cover housing 3. The gland 11 is fixed on the side opposite to the oil chamber 13. The base 12 protrudes a frustum 14 on one side of the oil chamber 13. The base 12 protrudes an annular platform 15 on the outside of the frustum 14. There is an annular oil inlet ring groove 16 that is communicated with the oil chamber 13 between the frustum 14 and the annular platform 15. The frustum 14, the annular platform 15 and the oil inlet ring groove 16 are all concentrically arranged. This oil quality monitoring system includes a number of pairs of transmissive light sensors 4 and LED lights 6. A number of evenly spaced windows one 151 are circumferentially provided on the inner side wall of the annular platform 15. At each window one 151, a light transmissive sheet one 152 that closes the window one 151 and is made of a transparent material is fixed. The LED lights 6 are all located inside the annular platform 15 and an LED light 6 is arranged corresponding to each window one 151. On the outer peripheral surface of the frustum 14, windows two 141 are provided opposite to each window one 151. At each window two 141, a light transmissive sheet two 142 that closes the window two 141 and is made of a transparent material is fixed. The transmissive light sensors 4 are all located inside the frustum 14 and a transmissive light sensor 4 is arranged corresponding to each window two 141. The intelligent monitoring device of this application mainly includes a gland 11, a base 12 and other electronic auxiliary components. The base 12 is installed on the end cover housing 3 and encloses an oil chamber 13 with the end cover housing 3. An oil inlet ring groove 16 that is communicated with the oil chamber 13 is also provided on the base 12. Under normal circumstances, the oil inlet ring groove 16 is filled with lubricating oil. This monitoring system is a pair of LED lights 6 and transmissive light sensors 4. The LED lights 6 provide a light source. The transmissive light sensors 4 sense the light transmitted from the lubricating oil and convert the light signal into an electrical signal. The quality of the oil is judged according to the turbidity of the lubricating oil. In this way, the state of the lubricating oil can be conveniently detected by the device. The specific monitoring method of this application is to provide an annular platform 15 and a frustum 14 on the base 12 on one side of the oil chamber 13. The inside of the annular platform 15 is used to install the LED lights 6, and the inside of the frustum 14 is used to install the transmissive light sensors 4. A number of light transmissive sheets one 152 are embedded on the inner wall of the annular platform 15. Light transmissive sheets two 142 corresponding to the light transmissive sheets are provided on the outer periphery of the frustum 14. The light transmissive sheets one 152 and the light transmissive sheets two 142 can isolate the lubricating oil, keeping the LED lights 6 and the transmissive light sensors 4 not in contact with the lubricating oil. Moreover, the light emitted by the LED lights 6 can pass through the light transmissive sheets one 152, penetrate the oil in the oil inlet ring groove 16 and then pass through the light transmissive sheets two 142 to be captured by the transmissive light sensors 4. Such a design is very convenient for monitoring the quality of the lubricating oil on the wheel end.

[0037] At the bottom of the oil inlet ring groove 16, a third window 121 is provided between each pair of the first window 151 and the second window 141. A third light-transmitting sheet 122 made of a transparent material and closing the third window 121 is fixed at the third window 121. A refraction light sensor 5 is arranged in the base 12 corresponding to each third window 121. In the present application, a third light-transmitting sheet 122 is further provided at the bottom of the oil inlet ring groove 16, and a refraction light sensor 5 is arranged on the base 12. The transmitted light sensor 4 and the LED lamp 6 are arranged oppositely, while the refraction light sensor 5 is located between the transmitted light sensor 4 and the LED lamp 6 and can vertically capture the refracted light. The transmitted light sensor 4 and the refraction light sensor 5 can capture the light transmission condition of the lubricating oil in the oil inlet ring groove 16 from two angles, which can be used to more intuitively observe and judge the oil quality. In this way, the monitoring is simple and very intuitive and clear.

[0038] It should be noted that both the transmitted light sensor 4 and the refraction light sensor 5 are composed of an optical sensor and a corresponding circuit board, can sensitively capture light signals and convert them into electrical signals, which can be directly purchased on the market and will not be elaborated here too much.

[0039] On the side wall of the oil inlet ring groove 16, support columns 123 protrude on both sides of each window one 151. Electrode columns 7 are inserted through the interiors of the support columns 123. A metal disk 8 is arranged in the oil cavity 13. The outer edge of the metal disk 8 is fixed to all the support columns 123. The electrode columns 7 are inserted through the support columns 123, and the electrode columns 7 are electrically connected to the metal disk 8. An integrated circuit board 9 and a processor 91 are arranged between the gland 11 and the base 12. The integrated circuit board 9 is fixed to the base 12 by screws. The guide is electrically connected to the integrated circuit board 9. In the oil inlet ring groove 16 of the present application, support columns 123 are arranged on both sides of each window one 151. The support columns 123 can block the positions on both sides of each window one 151, so that the light emitted by the LED lamp 6 in the window one 151 can penetrate the lubricating oil more intensively and enter the window two 141 to be captured by the transmitted light sensor 4, which is clearer, more intuitive and convenient for monitoring. The function of the support column 123 is not only to gather the light of the LED lamp 6, but also to install and fix the metal disk 8. The metal disk 8 can conduct the temperature of the lubricating oil in the oil cavity 13. Moreover, the height of the lubricating oil level in the oil cavity 13 will directly cause the capacitance of the metal disk 8 to change, and then it is conducted to the integrated circuit board 9 through the electrode column 7 and fed back to the processor 91. The temperature and oil level of the lubricating oil are monitored by directly conducting electricity and heat through the metal disk 8 and the electrode column 7. Such a design is very convenient for monitoring and has very high practicability. Moreover, the support column 123 serves two purposes, and the structure is very ingenious. On the side of the base 12 where the gland 11 is located, a circular convex portion 124 protrudes corresponding to the oil inlet ring groove 16. Installation grooves three 125 are arranged on the circular convex portion 124 corresponding to each window three 121. The refracted light sensors 5 are all located in the installation grooves three 125. The integrated circuit board 9 is located above the circular convex portion 124, and the refracted light sensors 5 are all electrically connected to the integrated circuit board 9. There is a circular convex portion 124 on the back of the oil inlet ring groove 16. There are separate installation grooves three 125 for several refracted light sensors 5 on the circular convex portion 124. Each refracted light sensor 5 is separately installed and embedded in the installation groove three 125 and electrically connected to the integrated circuit board 9. In this way, each refracted light sensor 5 can be better supported when the wheel hub 1 rotates and runs more stably. The distance between the integrated circuit board 9 and the refracted light sensors 5 is very short, and spot welding can be directly carried out, improving the overall stability.

[0040] The base 12 is provided with a sunken annular groove 126 at the position corresponding to the annular platform 15 on the side where the gland 11 is located. Inside the annular groove 126, a clamping block 127 is provided in front of each window one 151. The clamping block 127 surrounds the front of the window one 151, and each clamping block 127 is provided with a slot 128. The LED lamp 6 is plugged and connected in the slot 128, and all the LED lamps 6 are electrically connected to the integrated circuit board 9. An annular groove 126 is provided at the back of the annular platform 15. Inside the annular groove 126, a clamping block 127 for fixing the LED lamp 6 is provided. The clamping block 127 surrounds the front of the window one 151 and can surround and block the periphery of the window one 151. In this way, the LED lamp 6 is installed in the slot 128 on the clamping block 127, and the clamping block 127 can play a further role in condensing light, making the light source irradiation more concentrated, so that more light energy can pass through the lubricating oil and be captured by the transmitted light sensor 4, making the monitoring effect better and the monitoring more convenient. On the base 12, at the position corresponding to the round platform 14 on the side where the gland 11 is located, a sunken mounting groove 129 is provided. On the inner wall of the mounting groove 129, a clamping groove 130 is provided corresponding to each window two 141. The transmitted light sensor 4 is clamped in the clamping groove 130 and is directly opposite to the window two 141, and all the transmitted light sensors 4 are electrically connected to the integrated circuit board 9. The windows one 151 on the round platform 14 are arranged in pairs and are symmetrically arranged with the axis of the round platform 14 as the center. The windows two 141 and the windows three 121 are also arranged in pairs. One transmitted light sensor 4, one refracted light sensor 5 and one LED lamp 6 form a group. Then, multiple groups of transmitted light sensors 4, refracted light sensors 5 and LED lamps 6 are provided on the base 12. In the design of this application, each group of transmitted light sensors 4, refracted light sensors 5 and LED lamps 6 has corresponding symmetric transmitted light sensors 4, refracted light sensors 5 and LED lamps 6. Such a design can cancel out the centrifugal force when the hub 1 rotates, making the entire monitoring system operate more stably. The integrated circuit board 9 is in a ring structure, and the outer edge of the integrated circuit board 9 shields above the annular groove 126. The processor 91 is welded on the integrated circuit board 9. A power supply assembly 92 is fixed on the outer periphery of the hub 1, and the power supply assembly 92 and the processor 91 are distributed on both sides of the axis of the hub 1. The integrated circuit board 9 of this application is in a ring structure, and the processor 91 is welded on the integrated circuit board 9. The power of the entire system is supplied through an external power supply assembly 92, which is convenient for replacing the power supply assembly 92. Moreover, the position of the power supply assembly 92 is arranged opposite to the position of the processor 91, which can counteract the centrifugal force when the hub 1 rotates, making the monitoring system more stable.

[0041] The outer edge of the metal disc 8 shields the upper part of the oil inlet ring groove 16. The metal disc 8 can not only conduct heat and capacitance changes for monitoring the temperature and oil level of the lubricating oil, but also, with its disc-shaped structure shielding the upper part of the oil inlet ring groove 16, cooperate with the support column 123 to shield the upper part of the oil inlet ring groove 16, making the light source emitted from the first window 151 more concentrated to penetrate the lubricating oil and be captured by the transmitted light sensor 4 and the refracted light sensor 5. Such a design has a better monitoring effect and is very convenient for monitoring. There are two metal discs 8 arranged in parallel with each other. Both metal discs 8 are fixed to the support column 123 and are electrically connected to the electrode columns 7 on different support columns 123.

[0042] The working process of this monitoring system is as follows: When a user wants to know the state of the lubricating oil in the hub, they can click on the independently set display device to transmit a signal to the processor 91 via Bluetooth. The signal processor 91 is equipped with a Bluetooth module. The processor 91 controls the LED lamp 6 to emit light through the control circuit. Then, the transmitted light sensor 4 and the refracted light sensor 5 sense the transmitted and refracted light, convert the optical signal into an electrical signal, and transmit it to the processor 91, which is then transmitted to the display device for conversion and display. After the light source of the LED lamp 6 emits light, the light enters the lubricating oil, undergoes refraction and projection, and reaches the refraction plate and the transmission plate. During this process, due to the different qualities of the lubricating oil, the light transmittance and refractive index are different. Finally, the signals collected by the refracted light sensor 5 and the transmitted light sensor 4 are also different. The optical signals are collected, converted into electrical signals, and then the data is processed by the processor. By analyzing this signal data, it is determined whether the oil quality is qualified. Simply put, it is to measure the turbidity of different oil qualities.

[0043] The specific embodiments described in this article are merely illustrative of the spirit of the present invention. Those skilled in the technical field to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. Hub lubricating oil quality monitoring system, the hub (1) includes an end cover housing (3), an axle head nut (17), a spacer sleeve (18), a bearing (19) and a oil seal (2), a base (12) is fixed on the end cover housing (3), a gland (11) for sealing is fixed on the base (12), an oil passage (31) is provided inside the end cover housing (3), an oil cavity (13) communicating with the oil passage (31) is formed by surrounding between the base (12) and the end cover housing (3), and the gland (11) is fixed on a side portion away from the oil cavity (13), characterized in that, The base (12) protrudes with a frustum (14) on one side of the oil cavity (13). The base (12) protrudes with an annular platform (15) on the outside of the frustum (14). There is an annular oil inlet ring groove (16) that is annular and communicates with the oil cavity (13) between the frustum (14) and the annular platform (15). The frustum (14), the annular platform (15), and the oil inlet ring groove (16) are all concentrically arranged. This oil quality monitoring system includes a number of pairs of transmissive light sensors (4) and LED lights (6). A number of uniformly spaced windows one (151) are provided along the circumferential direction on the inner side wall of the annular platform (15). At each window one (151), a light-transmitting sheet one (152) that closes the window one (151) and is made of a transparent material is fixed. The LED lights (6) are all located inside the annular platform (15), and an LED light (6) is arranged corresponding to each window one (151). On the outer peripheral surface of the frustum (14), windows two (141) are provided opposite to each window one (151). At each window two (141), a light-transmitting sheet two (142) that closes the window two (141) and is made of a transparent material is fixed. The transmissive light sensors (4) are all located inside the frustum (14), and a transmissive light sensor (4) is arranged corresponding to each window two (141).

2. The hub lubricating oil quality monitoring system according to claim 1, wherein At the bottom of the oil inlet ring groove (16), a window three (121) is provided between each pair of windows one (151) and windows two (141). At the window three (121), a light-transmitting sheet three (122) that closes the window three (121) and is made of a transparent material is fixed. A refractive light sensor (5) is arranged corresponding to each window three (121) inside the base (12).

3. The hub lubricating oil quality monitoring system according to claim 2, wherein On the side wall of the oil inlet ring groove (16), support columns (123) protrude on both sides of each window one (151). Electrode columns (7) are all inserted inside the support columns (123). A metal disc (8) is arranged inside the oil cavity (13). The outer edge of the metal disc (8) is fixed to all the support columns (123). The electrode columns (7) are inserted inside the support columns (123), and the electrode columns (7) are electrically connected to the metal disc (8). A PCS circuit board detection module is arranged between the gland (11) and the base (12). The PCS circuit board detection module includes an integrated circuit board (9) and a processor (91). The electrode columns (7) are electrically connected to the integrated circuit board (9).

4. The hub lubricating oil quality monitoring system according to claim 3, wherein, The base (12) protrudes with an annular protrusion (124) corresponding to the oil inlet ring groove (16) on the side where the gland (11) is located. Installation grooves three (125) are provided corresponding to each window three (121) on the annular protrusion (124). The refractive light sensors (5) are all located inside the installation grooves three (125). The integrated circuit board (9) is located above the annular protrusion (124), and the refractive light sensors (5) are all electrically connected to the integrated circuit board (9).

5. The hub lubricating oil quality monitoring system according to claim 4, wherein The base (12) is provided with a sunken annular groove (126) corresponding to the annular platform (15) on the side where the gland (11) is located. A clamping block (127) is arranged in front of each window one (151) in the annular groove (126). The clamping block (127) surrounds the front of the window one (151), and each clamping block (127) is provided with a slot (128). The LED lamp (6) is plugged and connected in the slot (128), and all the LED lamps (6) are electrically connected to the integrated circuit board (9).

6. The hub lubricating oil quality monitoring system according to claim 5, wherein The base (12) is provided with a sunken installation groove (129) corresponding to the conical platform (14) on the side where the gland (11) is located. A clamping groove (130) is formed in the inner wall of the installation groove (129) corresponding to each window two (141). The transmissive light sensor (4) is clamped in the clamping groove (130) and is directly opposite to the window two (141), and all the transmissive light sensors (4) are electrically connected to the integrated circuit board (9).

7. The hub lubricating oil quality monitoring system according to claim 6, wherein The windows one (151) on the conical platform (14) are arranged in pairs and are symmetrically arranged with the axis of the conical platform (14) as the center. The windows two (141) and the windows three (121) are also arranged in pairs.

8. The hub lubricating oil quality monitoring system according to any one of claims 3-7, characterized in that The integrated circuit board (9) has an annular structure, and the outer edge thereof shields above the annular groove (126). The processor (91) is welded on the integrated circuit board (9). A power supply assembly (92) is fixed to the outer periphery of the hub (1). The power supply assembly (92) and the processor (91) are distributed on both sides of the axis of the hub (1).

9. The hub lubricating oil quality monitoring system according to claim 8, characterized in that, The outer edge of the metal disc (8) shields above the oil inlet annular groove (16).

10. The hub lubricating oil quality monitoring system according to claim 9, wherein, There are two metal discs (8) which are arranged in parallel with each other. Both metal discs (8) are fixed to the support columns (123) and are electrically connected to the electrode columns (7) on different support columns (123).

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