Gearbox filtering system and harvester

Abstract

The utility model provides a gearbox filtering system and a harvester, the gearbox filtering system comprises a gearbox, an oil pump, a filtering mechanism and a filtering pipeline, both ends of the filtering pipeline are connected with the gearbox, and both the oil pump and the filtering mechanism are installed on the filtering pipeline. By filtering the gearbox oil, the utilization rate of the lubricating oil can be increased, the frequency of replacing the lubricating oil by a user is reduced, the fault rate of the gearbox is reduced, and the service life of the gearbox is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a gearbox filtering system and a harvester. Background Art

[0002] The gearbox is one of the most critical components in the power transmission of the harvester. Its durable characteristics often make users ignore the necessity of maintenance. However, timely cleaning of impurities inside the gearbox or periodic replacement of lubricating oil will greatly extend the service life of the gearbox.

[0003] The current method of cleaning impurities inside the gearbox is mainly through adsorption by the magnet at the bottom; as for the cycle of changing the lubricating oil, it depends more on the user's own maintenance awareness.

[0004] Normally, the bolts at the oil outlet at the bottom of the gearbox are replaced with magnet bolts to absorb iron filings inside the gearbox. This method has many disadvantages. First, its effective adsorption area is small; second, its adsorption capacity gradually decreases with the increase of surface impurities; third, when the surface is treated with iron filings, the magnet bolts need to be removed and the lubricating oil will leak out simultaneously. In addition, the problem of internal impurities can be effectively solved by replacing the gearbox oil in time. However, due to cost considerations or lack of maintenance awareness, users rarely replace the gearbox oil periodically. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a gearbox filtering system and a harvester in view of the deficiencies in the prior art.

[0006] The utility model solves the above technical problems with the following technical solutions: a gearbox filter system, comprising: a gearbox, an oil pump, a filter mechanism, and a filter pipeline, both ends of the filter pipeline are connected to the gearbox, and the oil pump and the filter mechanism are installed on the filter pipeline.

[0007] The beneficial effects of adopting the technical solution of the utility model are: filtering the gearbox oil can improve the utilization rate of the lubricating oil, reduce the frequency of users changing the lubricating oil, reduce the gearbox failure rate, and extend the service life of the gearbox.

[0008] Furthermore, it also includes: a controller, the controller is connected to the oil pump, and the controller is connected to a display terminal.

[0009] The beneficial effect of adopting the above further technical solution is: by realizing automatic filtering of the transmission oil at a fixed time through electronic control, the utilization rate of the lubricating oil can be improved, the frequency of lubricating oil replacement by users can be reduced, the failure rate of the transmission can be reduced, and the service life of the transmission can be extended. The electrical components are connected to the controller through the wiring harness for logical processing. The controller is connected to the display screen through CAN communication to display the current pressure, pressure difference, oil quality, current status information, alarm information, etc.

[0010] Furthermore, a timer is provided in the controller, and the display terminal is a display screen.

[0011] The beneficial effect of adopting the above further technical solution is that the electrical components are connected to the controller through the wiring harness for logic processing. The controller is connected to the display screen through CAN communication to display the current pressure, pressure difference, oil quality, current status information, alarm information, etc.

[0012] Furthermore, an oil quality detection device is provided on the filter pipeline, and the oil quality detection device is located between the gearbox and the filter mechanism.

[0013] The beneficial effect of adopting the above further technical solution is: adding an oil quality detection device at the rear end of the filter mechanism, which mainly detects the oil quality through the principle of photoelectric reflection. The new oil quality detection device can timely feedback the oil status to the controller, and finally interact with the user through the display screen to achieve the effect of reminding the user to replace it in time.

[0014] Furthermore, the oil detection device includes: a photoelectric intensity transmitting end and a photoelectric intensity receiving end, the photoelectric intensity transmitting end and the photoelectric intensity receiving end are respectively installed on both sides of the filtering pipeline, and the positions of the photoelectric intensity transmitting end and the photoelectric intensity receiving end correspond.

[0015] The beneficial effect of adopting the above further technical solution is: a new oil quality detection device is added at the rear end of the filtering mechanism. The device mainly detects the oil quality through the principle of photoelectric reflection, in which the photoelectric intensity transmitting end is installed on one side of the pipeline, and the photoelectric intensity receiving end is installed on the other side. The device mainly uses the light intensity of the receiving end to reflect the quality of the engine oil. When the internal impurities increase, the light intensity of the photoelectric intensity receiving end will gradually weaken accordingly. When the critical value is exceeded, the oil quality detection device outputs a signal to the controller. After the controller receives the over-standard signal, it outputs it to the display terminal to achieve an alarm effect, thereby reminding the user to change the engine oil in time.

[0016] Furthermore, the filtering mechanism includes: a first filter and a second filter, the first filter and the second filter are both installed on the filtering pipeline, and the oil pump is located between the first filter and the second filter.

[0017] The beneficial effect of adopting the above-mentioned further technical solution is: a detachable magnet adsorption device is added to the first filter, and the first filter is structurally modified, which can effectively remove iron filings in the lubricating oil and facilitate disassembly and cleaning, effectively reducing the replacement frequency of the second filter and increasing the service life of the second filter.

[0018] Furthermore, a first pressure gauge and a second pressure gauge are provided on the filter pipeline, and the second filter is located between the first pressure gauge and the second pressure gauge.

[0019] The beneficial effect of adopting the above further technical solution is: two pressure gauges are respectively installed at both ends of the filter mechanism. When the filter mechanism is blocked, the system pressure difference increases. When the pressure difference accumulation exceeds a certain limit, the system will issue a pressure difference over-limit alarm to remind the user to replace the filter mechanism. Two pressure gauges are respectively installed at both ends of the second filter, and the combination is connected after the first filter. When the second filter is blocked, the system pressure difference increases. When the pressure difference accumulation exceeds a certain limit, the system will issue a pressure difference over-limit alarm to remind the user to replace the second filter.

[0020] Furthermore, a replaceable spiral magnet adsorption device and a filter screen are provided in the first filter, the bottom of the first filter is a funnel-shaped structure, and lubricating oil is provided in the gearbox.

[0021] The beneficial effect of adopting the above further technical solution is that the first filter is installed at the bottom outlet of the gearbox, and a spiral magnet adsorption device is installed inside the first filter. When the lubricating oil flows through the inside, the fine iron filings in the lubricating oil can be effectively adsorbed. Among them, the system improves the structure of the first filter, and a funnel-like structure is formed at the bottom, which increases the sedimentation area and more effectively removes impurities such as iron filings in the oil circuit. A detachable magnet adsorption device is added to the first filter, and the first filter is structurally modified, which can effectively remove iron filings in the lubricating oil while facilitating disassembly and cleaning, effectively reducing the replacement frequency of the second filter and increasing the service life of the second filter. A new oil pressure detection device is added to remind the user to replace the second filter in time to avoid repeated use of lubricating oil with more impurities.

[0022] Furthermore, a rotation speed sensor is provided on the gearbox, and the rotation speed sensor corresponds to a gear on a transmission shaft in the gearbox.

[0023] The beneficial effect of adopting the above further technical solution is: the speed sensor is installed on the gearbox to detect whether the transmission shaft is in operation. When the transmission shaft is running, the controller starts to record the working time of the gearbox. When the working time exceeds the limit, the system will automatically turn on the gearbox filter system for a certain period of time to remove impurities inside the lubrication system. The system interval time and duration can be configured through the intelligent display terminal.

[0024] In addition, the utility model also provides a harvester, comprising a gearbox filter system as described in any one of the above items.

[0025] The beneficial effects of adopting the technical solution of the utility model are: by realizing automatic and timed filtering of the transmission oil through electronic control, the utilization rate of the lubricating oil can be improved, the frequency of lubricating oil replacement by users can be reduced, the failure rate of the transmission can be reduced, and the service life of the transmission can be extended.

[0026] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a transmission filter system provided in an embodiment of the utility model.

[0028] Figure 2 This is one of the structural schematic diagrams of the first filter provided in an embodiment of the utility model.

[0029] Figure 3 This is a second structural schematic diagram of the first filter provided in an embodiment of the utility model.

[0030] Explanation of the accompanying drawings: 1. gearbox; 2. oil pump; 3. filtering mechanism; 4. filtering pipeline; 5. oil quality detection device; 6. first filter; 7. second filter; 8. photoelectric intensity transmitting end; 9. photoelectric intensity receiving end; 10. speed sensor; 11. first pressure gauge; 12. second pressure gauge; 13. replaceable spiral magnet adsorption device; 14. filter screen; 15. funnel structure. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] like Figures 1 to 3As shown, an embodiment of the utility model provides a gearbox filtering system, comprising: a gearbox 1, an oil pump 2, a filtering mechanism 3, and a filtering pipeline 4, both ends of the filtering pipeline 4 are connected to the gearbox 1, and the oil pump 2 and the filtering mechanism 3 are both installed on the filtering pipeline 4.

[0033] The beneficial effects of adopting the technical solution of the utility model are: filtering the gearbox oil can improve the utilization rate of the lubricating oil, reduce the frequency of users changing the lubricating oil, reduce the gearbox failure rate, and extend the service life of the gearbox.

[0034] Furthermore, it also includes: a controller, the controller is connected to the oil pump 2, and the controller is connected to a display terminal.

[0035] The beneficial effect of adopting the above further technical solution is: by realizing automatic filtering of the transmission oil at a fixed time through electronic control, the utilization rate of the lubricating oil can be improved, the frequency of lubricating oil replacement by users can be reduced, the failure rate of the transmission can be reduced, and the service life of the transmission can be extended. The electrical components are connected to the controller through the wiring harness for logical processing. The controller is connected to the display screen through CAN communication to display the current pressure, pressure difference, oil quality, current status information, alarm information, etc.

[0036] It should be noted that the gearbox filtration system can realize the operation of each component through manual control by the user, thereby realizing the gearbox filtration operation. Specifically, the user determines whether the gearbox is working based on the speed sensor. When the gearbox is working, the user periodically turns on the oil pump so that the lubricating oil inside the gearbox enters the gearbox filtration system. The user determines whether the lubricating oil needs to be replaced through the oil information transmitted to the display terminal by the oil detection device. The user calculates the pressure difference based on the readings of the first pressure gauge and the second pressure gauge, and determines whether the second filter is blocked, and replaces it in time if it is blocked. Automatic control can also be achieved through a controller. The control methods of the controller controlling each component are all prior art, that is, the methods of the controller controlling the oil pump, the oil detection device, the photoelectric intensity transmitting end, the photoelectric intensity receiving end, the speed sensor, the first pressure gauge, the second pressure gauge, etc. are all prior art. The user can set the controller to achieve automatic control according to actual needs, which will not be repeated here.

[0037] Furthermore, a timer is provided in the controller, and the display terminal is a display screen.

[0038] The beneficial effect of adopting the above further technical solution is that the electrical components are connected to the controller through the wiring harness for logic processing. The controller is connected to the display screen through CAN communication to display the current pressure, pressure difference, oil quality, current status information, alarm information, etc.

[0039] like Figures 1 to 3As shown, further, an oil quality detection device 5 is provided on the filter pipeline 4 , and the oil quality detection device 5 is located between the gearbox 1 and the filter mechanism 3 .

[0040] The beneficial effect of adopting the above further technical solution is: adding an oil quality detection device at the rear end of the filter mechanism, which mainly detects the oil quality through the principle of photoelectric reflection. The new oil quality detection device can timely feedback the oil status to the controller, and finally interact with the user through the display screen to achieve the effect of reminding the user to replace it in time.

[0041] like Figures 1 to 3 As shown, further, the oil detection device 5 includes: a photoelectric intensity transmitting end 8 and a photoelectric intensity receiving end 9, the photoelectric intensity transmitting end 8 and the photoelectric intensity receiving end 9 are respectively installed on both sides of the filtering pipeline 4, and the positions of the photoelectric intensity transmitting end 8 and the photoelectric intensity receiving end 9 correspond.

[0042] The beneficial effect of adopting the above further technical solution is: a new oil quality detection device is added at the rear end of the filtering mechanism. The device mainly detects the oil quality through the principle of photoelectric reflection, in which the photoelectric intensity transmitting end is installed on one side of the pipeline, and the photoelectric intensity receiving end is installed on the other side. The device mainly uses the light intensity of the receiving end to reflect the quality of the engine oil. When the internal impurities increase, the light intensity of the photoelectric intensity receiving end will gradually weaken accordingly. When the critical value is exceeded, the oil quality detection device outputs a signal to the controller. After the controller receives the over-standard signal, it outputs it to the display terminal to achieve an alarm effect, thereby reminding the user to change the engine oil in time.

[0043] like Figures 1 to 3 As shown, further, the filtering mechanism 3 includes: a first filter 6 and a second filter 7 , the first filter 6 and the second filter 7 are both installed on the filtering pipeline 4 , and the oil pump 2 is located between the first filter 6 and the second filter 7 .

[0044] The beneficial effect of adopting the above-mentioned further technical solution is: a detachable magnet adsorption device is added to the first filter, and the first filter is structurally modified, which can effectively remove iron filings in the lubricating oil and facilitate disassembly and cleaning, effectively reducing the replacement frequency of the second filter and increasing the service life of the second filter.

[0045] like Figures 1 to 3 As shown, further, a first pressure gauge 11 and a second pressure gauge 12 are provided on the filter pipeline 4 , and the second filter 7 is located between the first pressure gauge 11 and the second pressure gauge 12 .

[0046] The beneficial effect of adopting the above further technical solution is: two pressure gauges are respectively installed at both ends of the filter mechanism. When the filter mechanism is blocked, the system pressure difference increases. When the pressure difference accumulation exceeds a certain limit, the system will issue a pressure difference over-limit alarm to remind the user to replace the filter mechanism. Two pressure gauges are respectively installed at both ends of the second filter, and the combination is connected after the first filter. When the second filter is blocked, the system pressure difference increases. When the pressure difference accumulation exceeds a certain limit, the system will issue a pressure difference over-limit alarm to remind the user to replace the second filter.

[0047] like Figures 1 to 3 As shown, further, the first filter 6 is provided with a replaceable spiral magnet adsorption device 13 and a filter screen 14, the bottom of the first filter 6 is a funnel-shaped structure 15, and the gearbox 1 is provided with lubricating oil.

[0048] The beneficial effect of adopting the above further technical solution is that the first filter is installed at the bottom outlet of the gearbox, and a spiral magnet adsorption device is installed inside the first filter. When the lubricating oil flows through the inside, the fine iron filings in the lubricating oil can be effectively adsorbed. Among them, the system improves the structure of the first filter, and a funnel-like structure is formed at the bottom, which increases the sedimentation area and more effectively removes impurities such as iron filings in the oil circuit. A detachable magnet adsorption device is added to the first filter, and the first filter is structurally modified, which can effectively remove iron filings in the lubricating oil while facilitating disassembly and cleaning, effectively reducing the replacement frequency of the second filter and increasing the service life of the second filter. A new oil pressure detection device is added to remind the user to replace the second filter in time to avoid repeated use of lubricating oil with more impurities.

[0049] like Figures 1 to 3 As shown, further, a rotation speed sensor 10 is provided on the gearbox 1 , and the rotation speed sensor 10 corresponds to the gear on the transmission shaft in the gearbox 1 .

[0050] The beneficial effect of adopting the above further technical solution is: the speed sensor is installed on the gearbox to detect whether the transmission shaft is in operation. When the transmission shaft is running, the controller starts to record the working time of the gearbox. When the working time exceeds the limit, the system will automatically turn on the gearbox filter system for a certain period of time to remove impurities inside the lubrication system. The system interval time and duration can be configured through the intelligent display terminal.

[0051] In addition, the utility model also provides a harvester, comprising a gearbox filter system as described in any one of the above items.

[0052] The beneficial effects of adopting the technical solution of the utility model are: by realizing automatic and timed filtering of the transmission oil through electronic control, the utilization rate of the lubricating oil can be improved, the frequency of lubricating oil replacement by users can be reduced, the failure rate of the transmission can be reduced, and the service life of the transmission can be extended.

[0053] Among them, the main principle of the spiral structure (replaceable spiral magnet adsorption device) is to increase the contact area of ​​adsorption. The general filtering system includes two different structures, a coarse filter and a fine filter, which mainly distinguish impurities with different pore sizes. In the utility model, a large-aperture filter screen (filter screen) is installed on the side of the coarse filter (first filter), and the pore size is at the mm level. A detachable spiral filter device (replaceable spiral magnet adsorption device) is added inside, which is mainly used for filtering and adsorbing large iron filings and residues. The fine filter (second filter) is designed as a filter element structure, which is aimed at filter elements with finer and smaller pore sizes of um level, and is used to filter um-level impurities that cannot be effectively removed in the coarse filter (first filter).

[0054] The speed sensor can be installed on the gearbox housing through the threaded hole. The principle is that when the sensor (speed sensor) sensing surface detects the "teeth" on the rotating shaft (transmission shaft) gear, the sensor (speed sensor) is triggered to respond. When the relative position of the sensing surface and the gear is between the "teeth" and the "teeth", there is no response. If the sensor (speed sensor) can continuously receive the pulse signal, the gearbox is in operation, otherwise it is in non-operation.

[0055] The two ends of the coarse filter (first filter) are connected to the entire pipeline (filter pipeline) through threads. The main improvement point 1 is to add a funnel-shaped structure (funnel-shaped structure) at the bottom to effectively settle impurities. Improvement point 2 is to add a detachable adsorption device (replaceable spiral magnet adsorption device) at the bottom of the funnel-shaped structure. The spiral structure inside the device is all magnets to increase the adsorption area. It can also be installed and disassembled through threads and can be cleaned regularly.

[0056] The coarse filter device (first filter) can be an improvement on the cylindrical tube structure, with a mm-level filter installed on the side to intercept some large impurities.

[0057] The internal spiral structures of the disassembled adsorption device (replaceable spiral magnet adsorption device) are all magnets with adsorption ability.

[0058] The oil (transmission oil, lubricating oil, engine oil) is opened and closed at a fixed time through the controller + oil pump to realize oil circulation, and the direction through the filter (the first filter and the second filter) is from left to right.

[0059] The embodiment of the utility model provides a gearbox filtering system, which can effectively overcome the disadvantages of the existing method, thereby greatly extending the service life of the gearbox.

[0060] The utility model provides a gearbox filtering system, which includes a gearbox housing, a coarse filter (first filter) with a replaceable spiral adsorption device, an oil pump, a fine filter (second filter), an oil detection device, a speed sensor, a controller, an intelligent display terminal (display terminal, display screen), etc.

[0061] Among them, the speed sensor is installed on the gearbox housing (gearbox) to detect whether the main drive shaft (drive shaft) is in operation. When the main drive shaft is running, the controller starts to record the gearbox working time. When the working time exceeds the limit, the system will automatically turn on the gearbox filter system for a certain period of time to remove impurities inside the lubrication system. When the duration is reached, the system stops running and refreshes the working time until it is triggered when the working time is reached again. In addition, the system interval time and duration can be configured through the intelligent display terminal.

[0062] The coarse filter (first filter) is installed at the bottom outlet of the gearbox housing (gearbox), and a spiral magnet adsorption device (replaceable spiral magnet adsorption device) is installed inside the coarse filter (first filter). When the lubricating oil (gearbox oil, engine oil) flows through the inside, it can effectively adsorb the fine iron filings in the lubricating oil. Among them, the system has made structural innovations to the structure of the coarse filter (first filter), forming a funnel-like structure (funnel-like structure) at the bottom, which increases the deposition area and more effectively removes impurities such as iron filings in the oil circuit (filter pipeline).

[0063] The outlet of the coarse filter (first filter) is connected to the oil pump, which drives the oil pump to realize the timed circulation function of the lubricating oil according to the usage time of the timing gearbox on the controller end.

[0064] Two pressure gauges (first pressure gauge and second pressure gauge) are installed at both ends of the fine filter (second filter), and the combination is connected after the coarse filter (first filter). When the fine filter (second filter) is clogged, the system pressure difference increases. When the accumulated pressure difference exceeds a certain limit, the system will issue a pressure difference over-limit alarm to remind the user to replace the fine filter (second filter).

[0065] An oil quality detection device (oil product detection device) is added at the rear end of the fine filter (second filter). The device mainly detects the oil quality through the principle of photoelectric reflection, in which the photoelectric intensity transmitting end is installed on one side of the pipeline (filter pipeline), and the photoelectric intensity receiving end is installed on the other side. The device mainly uses the light intensity of the receiving end (photoelectric intensity receiving end) to reflect the quality of the engine oil (lubricating oil, transmission oil). When the internal impurities increase, the light intensity of the receiving end (photoelectric intensity receiving end) will gradually weaken accordingly. When the critical value is exceeded, the oil quality detection device (oil product detection device) outputs a signal to the vehicle controller (controller). After the controller receives the over-standard signal, it outputs it to the smart display screen (display terminal, display screen) to achieve an alarm effect, thereby reminding the user to change the engine oil in time.

[0066] The electrical components are connected to the controller through the wiring harness for logical processing. The controller is connected to the smart display screen through CAN communication to display the current pressure, pressure difference, oil quality, current status information, alarm information, etc.

[0067] First, by using electronic control to automatically filter the transmission oil (lubricating oil, engine oil) at a fixed time (that is, the process of the oil pump drawing the transmission oil through the filtering system), the utilization rate of the lubricating oil can be greatly improved, the service life of the transmission can be increased, and the failure rate of the transmission can be reduced.

[0068] Second, a detachable magnet adsorption device (replaceable spiral magnet adsorption device) is added to the coarse filter (first filter), and the coarse filter (first filter) is structurally modified, which can effectively remove iron filings in the lubricating oil while facilitating disassembly and cleaning, effectively reducing the replacement frequency of the fine filter (second filter) and increasing the service life of the fine filter (second filter).

[0069] Third, a new oil pressure detection device (a first pressure gauge and a second pressure gauge) is added to promptly remind the user to replace the fine filter (the second filter) to avoid repeated use of lubricating oil with more impurities.

[0070] Fourth, a new oil quality detection device (oil product detection device) is added, which can provide timely feedback of the oil status to the controller, and finally interact with the user through the smart display screen to remind the user to replace the oil in time.

[0071] By adding a timed automatic circulation function, optimizing the coarse filter (first filter), adding a detachable device (replaceable spiral magnet adsorption device) to the coarse filter (first filter), oil quality detection (oil quality detection device) and other measures, the utilization rate of lubricating oil and fine filter (second filter) can be effectively increased, the frequency of lubricating oil replacement by users can be reduced, the service life can be increased, and the repair and maintenance costs can be reduced.

[0072] In addition, the utility model also provides a harvester, comprising a gearbox filter system as described in any one of the above items.

[0073] The beneficial effects of adopting the technical solution of the utility model are: by realizing automatic and timed filtering of the transmission oil through electronic control, the utilization rate of the lubricating oil can be improved, the frequency of lubricating oil replacement by users can be reduced, the failure rate of the transmission can be reduced, and the service life of the transmission can be extended.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A gearbox filter system, characterized in that: include: A gearbox, an oil pump, a filter mechanism, and a filter pipeline, wherein both ends of the filter pipeline are connected to the gearbox, and the oil pump and the filter mechanism are installed on the filter pipeline; An oil quality detection device is provided on the filter pipeline, and the oil quality detection device is located between the gearbox and the filter mechanism; the filter mechanism includes: a first filter and a second filter, the first filter and the second filter are both installed on the filter pipeline, and the oil pump is located between the first filter and the second filter.

2. A transmission filter system according to claim 1, characterized in that: Also includes: A controller is connected to the oil pump, and the controller is connected to a display terminal.

3. A transmission filter system according to claim 2, characterized in that: The controller is provided with a timer, and the display terminal is a display screen.

4. A transmission filter system according to claim 1, characterized in that: The oil product detection device comprises: a photoelectric intensity transmitting end and a photoelectric intensity receiving end, wherein the photoelectric intensity transmitting end and the photoelectric intensity receiving end are respectively installed on both sides of the filtering pipeline, and the positions of the photoelectric intensity transmitting end and the photoelectric intensity receiving end correspond.

5. The transmission filter system according to claim 1, characterized in that: The filter pipeline is provided with a first pressure gauge and a second pressure gauge, and the second filter is located between the first pressure gauge and the second pressure gauge.

6. A transmission filter system according to claim 1, characterized in that: The first filter is provided with a replaceable spiral magnet adsorption device and a filter screen, the bottom of the first filter is a funnel-shaped structure, and the gearbox is provided with lubricating oil.

7. The transmission filter system according to claim 1, characterized in that: The gearbox is provided with a rotation speed sensor, and the rotation speed sensor corresponds to the gear on the transmission shaft in the gearbox.

8. A harvester, characterized in that: A transmission filter system comprising any one of claims 1 to 7.

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