Tractor gearbox input shaft lubricating mechanism

Abstract

The utility model relates to the technical field of tractor gearboxes, in particular to an input shaft lubricating mechanism of a tractor gearbox, which not only can filter lubricating oil, improve the cleanliness of the lubricating oil and ensure the lubricating effect, but also can forcibly cool the lubricating oil in the device in a circulating manner and improve the cooling effect of the lubricating oil on an input shaft. Comprising a gearbox; the lubricating oil cooling device comprises a gearbox, and further comprises a filtering mechanism, an oil conveying mechanism, a circulating mechanism and a cooling mechanism, the filtering mechanism is installed on the gearbox and filters lubricating oil, the oil conveying mechanism is installed on the filtering mechanism and sprays the lubricating oil into the gearbox, and the circulating mechanism is installed on the filtering mechanism and conveys the lubricating oil into the filtering mechanism; the cooling mechanism is installed on the circulating mechanism and accelerates cooling of the lubricating oil.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor gearboxes, in particular to a lubricating mechanism for the input shaft of a tractor gearbox. Background Technique

[0002] The gearbox is a core component in a tractor. With the improvement of tractor performance, the internal structure of the gearbox is becoming more and more compact and complex. The needle bearing is an important component inside the gearbox and plays a supporting role for rotating components such as gears and shafts.

[0003] The existing lubricating mechanism for the input shaft of a tractor gearbox, for example, a lubricating device for the input shaft of a gearbox disclosed in the utility model patent with the application number 201420173864.9, its main structure includes the fitting between the input shaft and the input shaft cover, and is sealed by an oil seal. The input shaft cover axially fixes the input shaft and limits the input shaft bearing. There is an oil passage connection between the inner cavity of the input shaft and the shoulder of the input shaft. The input shaft and the output shaft are connected by a needle bearing. The inner cavity of the input shaft and the inner cavity of the first shaft are sealed by an oil seal, and the oil seal is fixed by a circlip; during use, the input shaft cover axially fixes the input shaft and limits the input shaft bearing. The oil passage connects the inner cavity of the input shaft and the shoulder of the input shaft. The input shaft and the output shaft are connected by a needle bearing, and the inner cavity of the input shaft is sealed by an oil seal for the inner cavity of the first shaft, and the oil seal in the inner cavity of the input shaft is fixed by a circlip, so that the inner cavity of the first shaft has good sealing performance, and the oil passage lubricates the input shaft bearing.

[0004] However, most of the existing lubricating mechanisms do not filter the lubricating oil. When the cleanliness of the lubricating oil decreases, it will cause the lubricating channel to be blocked, thus making the lubricating function fail. Moreover, the bearing is prone to heat during long-term operation, and it is necessary to timely discharge the heated lubricating oil. Content of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides a lubricating mechanism for the input shaft of a tractor gearbox that can not only filter the lubricating oil, improve the cleanliness of the lubricating oil, ensure the lubricating effect, but also force the lubricating oil to circulate and cool in the device, improving the cooling effect of the lubricating oil on the input shaft.

[0006] A lubrication mechanism for the input shaft of a tractor gearbox according to the present utility model includes a gearbox; it further includes a filtering mechanism, an oil delivery mechanism, a circulation mechanism, and a cooling mechanism. The filtering mechanism is installed on the gearbox and filters the lubricating oil. The oil delivery mechanism is installed on the filtering mechanism and sprays the lubricating oil onto the gearbox. The circulation mechanism is installed on the filtering mechanism and conveys the lubricating oil into the filtering mechanism. The cooling mechanism is installed on the circulation mechanism and accelerates the cooling of the lubricating oil. Start the circulation mechanism, the circulation mechanism conveys the lubricating oil into the filtering mechanism. After the filtering mechanism filters the lubricating oil, it is conveyed into the oil delivery mechanism. The oil delivery mechanism sprays the lubricating oil into the gearbox to lubricate the input shaft. Then, turn on the cooling mechanism to force the lubricating oil to circulate in the gearbox and the circulation mechanism, and cool the lubricating oil in a timely manner, improving the cooling effect of the lubricating oil on the input shaft.

[0007] Preferably, the gearbox includes a box body, a bearing seat, an input shaft, a sleeve, a shaft seal, and a bearing. The box body is installed on the tractor, the bearing seat is installed inside the box body, the input shaft is rotatably installed on the bearing seat, the sleeve is installed on the box body, the shaft seal is installed on the sleeve, and the bearing is installed on the box body. Install the box body on the tractor, connect the engine output shaft to the input shaft, and the input shaft transmits power to the bearing seat for speed change. By setting the sleeve, the input shaft is protected. By setting the shaft seal and the bearing, the stability of the input shaft is enhanced, and oil spillage is avoided.

[0008] Preferably, the filtering mechanism includes a lubricating oil tank, a filtering funnel, a waste collecting dish, and a cage-shaped support. The lubricating oil tank is installed on the box body. There is a cavity inside the lubricating oil tank, and an oil discharge port is opened at the bottom end of the lubricating oil tank. The filtering funnel is installed inside the cavity of the lubricating oil tank. The waste collecting dish is installed on the filtering funnel. The cage-shaped support is installed inside the cavity of the lubricating oil tank and is located below the filtering funnel. The circulation mechanism conveys the lubricating oil into the cavity of the lubricating oil tank. The filtering funnel and the cage-shaped support filter the lubricating oil twice. The impurities in the lubricating oil remain in the waste collecting dish, and the filtered lubricating oil enters the oil delivery mechanism through the discharge port of the lubricating oil tank.

[0009] Preferably, a polypropylene film is laid on the cage-shaped support; polypropylene is a general-purpose filter membrane suitable for filtering various oil-phase solutions. It has a high filtering efficiency, good acid and alkali resistance, and high temperature resistance, and can effectively filter acidic substances in the lubricating oil.

[0010] Preferably, the oil delivery mechanism includes a main oil delivery pipe, a first solenoid valve, a spray head, and an auxiliary oil delivery pipe. The top end of the main oil delivery pipe is internally connected to the oil discharge port at the bottom end of the lubricating oil tank. The first solenoid valve is installed on the main oil delivery pipe. The auxiliary oil delivery pipe is internally connected to the main oil delivery pipe. Open the first solenoid valve, the lubricating oil enters the spray head through the main oil delivery pipe, the spray head sprays the lubricating oil onto the input shaft, and at the same time the main oil delivery pipe conveys the lubricating oil into the auxiliary oil delivery pipe, and the auxiliary oil delivery pipe conveys the lubricating oil into the bearing for lubrication.

[0011] Preferably, the circulation mechanism includes an oil transfer pump, an oil suction pipe, a second solenoid valve, and a connecting pipe. The bottom end of the oil transfer pump is connected to the top end of the lubricating oil tank. The oil suction pipe is installed on the oil transfer pump. The second solenoid valve is installed on the oil suction pipe. The connecting pipe is installed on the oil transfer pump and communicates with the top end inside the cavity of the lubricating oil tank. When the second solenoid valve is opened and the oil transfer pump is started, the lubricating oil enters the oil transfer pump through the oil suction pipe. The oil transfer pump transports the lubricating oil into the cavity of the lubricating oil tank through the connecting pipe. When the lubricating oil accumulates to a certain amount, the second solenoid valve is closed. The oil transfer pump extracts the lubricating oil in the sleeve through the oil suction pipe and the cooling mechanism, and transports the lubricating oil into the cavity of the lubricating oil tank again for circulation.

[0012] Preferably, the cooling mechanism includes a return pipe, a heat dissipation pipe, and a third solenoid valve. The return pipe is installed on the sleeve and communicates with the inside of the sleeve. The heat dissipation pipe is installed on the return pipe and communicates with the inside of the return pipe. The third solenoid valve is installed on the heat dissipation pipe. When the third solenoid valve is opened, the oil transfer pump extracts the lubricating oil in the sleeve through the oil suction pipe, the return pipe, and the heat dissipation pipe. The lubricating oil is cooled through the return pipe and the heat dissipation pipe, enhancing the cooling effect of the lubricating oil on the input shaft.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: When the circulation mechanism is started, the circulation mechanism transports the lubricating oil into the filtering mechanism. The filtering mechanism filters the lubricating oil and then transports it into the oil delivery mechanism. The oil delivery mechanism sprays the lubricating oil into the gearbox to lubricate the input shaft. Then, the cooling mechanism is opened to force the lubricating oil to circulate in the gearbox and the circulation mechanism, and the lubricating oil is cooled in a timely manner, improving the temperature reduction effect of the lubricating oil on the input shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view structural schematic diagram of the present utility model;

[0015] Figure 2 is the axonometric structural schematic diagram of the gearbox of the present utility model;

[0016] Figure 3 is the partial enlarged sectional axonometric structural schematic diagram of the gearbox, the filtering mechanism, and the oil delivery mechanism of the present utility model;

[0017] Figure 4 is the partial enlarged axonometric structural schematic diagram of the circulation mechanism of the present utility model;

[0018] Figure 5 is the axonometric structural schematic diagram of the circulation mechanism and the cooling mechanism of the present utility model.

[0019] Reference signs in the drawings: 01, transmission; 11, housing; 12, bearing seat; 13, input shaft; 14, sleeve; 15, shaft seal; 16, bearing; 02, filtering mechanism; 21, lubricating oil tank; 22, filtering funnel; 23, waste collecting dish; 24, cage-type support; 03, oil delivery mechanism; 31, main oil delivery pipe; 32, first solenoid valve; 33, spray head; 34, auxiliary oil delivery pipe; 04, circulation mechanism; 41, oil transfer pump; 42, suction pipe; 43, second solenoid valve; 44, connecting pipe; 05, cooling mechanism; 51, return pipe; 52, heat dissipation pipe; 53, third solenoid valve. Detailed implementation mode

[0020] For ease of understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive. Embodiment

[0021] A lubrication mechanism for the input shaft of a tractor gearbox of the present utility model includes a gearbox 01; it further includes a filtering mechanism 02, an oil delivery mechanism 03, a circulation mechanism 04, and a cooling mechanism 05. The filtering mechanism 02 is installed on the gearbox 01 to filter the lubricating oil. The oil delivery mechanism 03 is installed on the filtering mechanism 02 to spray the lubricating oil onto the gearbox 01. The circulation mechanism 04 is installed on the filtering mechanism 02 to transport the lubricating oil into the filtering mechanism 02. The cooling mechanism 05 is installed on the circulation mechanism 04 to accelerate the cooling of the lubricating oil. The gearbox 01 includes a box body 11, a bearing seat 12, an input shaft 13, a sleeve 14, a shaft seal 15, and a bearing 16. The box body 11 is installed on the tractor. The bearing seat 12 is installed inside the box body 11. The input shaft 13 is rotatably installed on the bearing seat 12. The sleeve 14 is installed on the box body 11. The shaft seal 15 is installed on the sleeve 14. The bearing 16 is installed on the box body 11. The filtering mechanism 02 includes a lubricating oil tank 21, a filtering funnel 22, a waste collecting dish 23, and a cage-shaped support 24. The lubricating oil tank 21 is installed on the box body 11. The interior of the lubricating oil tank 21 is provided with a cavity. An oil discharge port is opened at the bottom end of the lubricating oil tank 21. The filtering funnel 22 is installed in the cavity of the lubricating oil tank 21. The waste collecting dish 23 is installed on the filtering funnel 22. The cage-shaped support 24 is installed in the cavity of the lubricating oil tank 21 and is located below the filtering funnel 22. A polypropylene film is laid on the cage-shaped support 24. The oil delivery mechanism 03 includes a main oil delivery pipe 31, a first solenoid valve 32, a spray head 33, and an auxiliary oil delivery pipe 34. The top end of the main oil delivery pipe 31 is internally communicated with the oil discharge port at the bottom end of the lubricating oil tank 21. The first solenoid valve 32 is installed on the main oil delivery pipe 31. The auxiliary oil delivery pipe 34 is internally communicated with the main oil delivery pipe 31. The circulation mechanism 04 includes an oil pump 41, a suction pipe 42, a second solenoid valve 43, and a connecting pipe 44. The bottom end of the oil pump 41 is connected to the top end of the lubricating oil tank 21. The suction pipe 42 is installed on the oil pump 41. The second solenoid valve 43 is installed on the suction pipe 42. The connecting pipe 44 is installed on the oil pump 41 and is internally communicated with the top end inside the cavity of the lubricating oil tank 21.

[0022] When it is working, first, the box body 11 is installed on the tractor, the engine output shaft is connected to the input shaft 13, and the input shaft 13 transmits power to the bearing seat 12 for speed change. The input shaft 13 is protected by setting the sleeve 14, and the stability of the input shaft 13 is enhanced by setting the shaft seal 15 and the bearing 16 to avoid the overflow of lubricating oil. The second solenoid valve 43 is opened to start the oil pump 41, and the lubricating oil enters the oil pump 41 through the oil suction pipe 42. The oil pump 41 transports the lubricating oil into the cavity of the lubricating oil tank 21 through the connecting pipe 44. The filtering funnel 22 and the cage support 24 double-filter the lubricating oil. The cage support 24 is covered with a polypropylene film to filter the acidic substances in the lubricating oil. The impurities in the lubricating oil remain in the waste collecting dish 23. The first solenoid valve 32 is opened, and the lubricating oil enters the nozzle 33 through the main oil delivery pipe 31. The nozzle 33 sprays the lubricating oil onto the input shaft 13. At the same time, the main oil delivery pipe 31 transports the lubricating oil into the auxiliary oil delivery pipe 34, and the auxiliary oil delivery pipe 34 transports the lubricating oil into the bearing 16 for lubrication. When the lubricating oil accumulates to a certain amount, the second solenoid valve 43 is closed, and the oil pump 41 extracts the lubricating oil in the sleeve 14 through the oil suction pipe 42 and the cooling mechanism 05, and transports the lubricating oil back into the cavity of the lubricating oil tank 21 for circulation. Embodiment

[0023] As Figures 1 to 5 shown, a lubricating mechanism for the input shaft of a tractor gearbox according to the present utility model is based on Embodiment 1; the cooling mechanism 05 includes a return pipe 51, a heat dissipation pipe 52, and a third solenoid valve 53. The return pipe 51 is installed on the sleeve 14 and is in communication with the inside of the sleeve 14. The heat dissipation pipe 52 is installed on the return pipe 51 and is in communication with the inside of the return pipe 51. The third solenoid valve 53 is installed on the heat dissipation pipe 52;

[0024] When it is working, first, the box body 11 is installed on the tractor. The engine output shaft is connected to the input shaft 13. The input shaft 13 transmits power to the bearing seat 12 for speed change. The input shaft 13 is protected by setting the sleeve 14. The stability of the input shaft 13 is enhanced by setting the shaft seal 15 and the bearing 16 to avoid the overflow of lubricating oil. The second solenoid valve 43 is opened to start the oil pump 41. The lubricating oil enters the oil pump 41 through the oil suction pipe 42. The oil pump 41 transports the lubricating oil into the cavity of the lubricating oil tank 21 through the connecting pipe 44. The filter funnel 22 and the cage bracket 24 perform double filtration on the lubricating oil. The cage bracket 24 is covered with a polypropylene film to filter the acidic substances in the lubricating oil. The impurities in the lubricating oil remain in the waste collecting dish 23. The first solenoid valve 32 is opened, and the lubricating oil enters the nozzle 33 through the main oil delivery pipe 31. The nozzle 33 sprays the lubricating oil onto the input shaft 13. At the same time, the main oil delivery pipe 31 transports the lubricating oil into the auxiliary oil delivery pipe 34. The auxiliary oil delivery pipe 34 transports the lubricating oil into the bearing 16 for lubrication. When the lubricating oil accumulates to a certain amount, the second solenoid valve 43 is closed and the third solenoid valve 53 is opened. The oil pump 41 extracts the lubricating oil in the sleeve 14 through the oil suction pipe 42, the return pipe 51 and the heat dissipation pipe 52, and transports the lubricating oil into the cavity of the lubricating oil tank 21 again for circulation. The lubricating oil is cooled through the return pipe 51 and the heat dissipation pipe 52, enhancing the cooling effect of the lubricating oil on the input shaft 13.

[0025] The oil pump 41 of the present utility model is purchased on the market. Those skilled in the art only need to install and operate it according to the attached operation manual, without the need for those skilled in the art to make creative efforts.

[0026] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A lubrication mechanism for the input shaft of a tractor gearbox, comprising a gearbox (01); characterized in that, It also includes a filtering mechanism (02), an oil delivery mechanism (03), a circulation mechanism (04) and a cooling mechanism (05). The filtering mechanism (02) is installed on the transmission (01) to filter the lubricating oil. The oil delivery mechanism (03) is installed on the filtering mechanism (02) to spray the lubricating oil into the transmission (01). The circulation mechanism (04) is installed on the filtering mechanism (02) to convey the lubricating oil into the filtering mechanism (02). The cooling mechanism (05) is installed on the circulation mechanism (04) to accelerate the cooling of the lubricating oil.

2. The lubrication mechanism of the input shaft of a tractor gearbox according to claim 1, characterized in that, The transmission (01) includes a housing (11), a bearing seat (12), an input shaft (13), a sleeve (14), a shaft seal (15) and a bearing (16). The housing (11) is installed on the tractor. The bearing seat (12) is installed inside the housing (11). The input shaft (13) is rotatably installed on the bearing seat (12). The sleeve (14) is installed on the housing (11). The shaft seal (15) is installed on the sleeve (14). The bearing (16) is installed on the housing (11).

3. The lubrication mechanism for the input shaft of a tractor gearbox according to claim 2, characterized in that, The filtering mechanism (02) includes a lubricating oil tank (21), a filtering funnel (22), a waste collecting dish (23) and a cage support (24). The lubricating oil tank (21) is installed on the housing (11). There is a cavity inside the lubricating oil tank (21). An oil drain port is opened at the bottom end of the lubricating oil tank (21). The filtering funnel (22) is installed inside the cavity of the lubricating oil tank (21). The waste collecting dish (23) is installed on the filtering funnel (22). The cage support (24) is installed inside the cavity of the lubricating oil tank (21) and is located below the filtering funnel (22).

4. The lubrication mechanism for the input shaft of a tractor gearbox according to claim 3, characterized in that, It also includes that a polypropylene film is laid on the cage support (24).

5. The lubrication mechanism for the input shaft of a tractor gearbox according to claim 3, characterized in that, The oil delivery mechanism (03) includes a main oil delivery pipe (31), a first solenoid valve (32), a spray head (33) and an auxiliary oil delivery pipe (34). The top end of the main oil delivery pipe (31) is internally connected to the oil drain port at the bottom end of the lubricating oil tank (21). The first solenoid valve (32) is installed on the main oil delivery pipe (31). The auxiliary oil delivery pipe (34) is internally connected to the main oil delivery pipe (31).

6. The lubrication mechanism for the input shaft of a tractor gearbox according to claim 3, characterized in that, The circulation mechanism (04) includes an oil pump (41), a suction pipe (42), a second solenoid valve (43) and a connecting pipe (44). The bottom end of the oil pump (41) is connected to the top end of the lubricating oil tank (21). The suction pipe (42) is installed on the oil pump (41). The second solenoid valve (43) is installed on the suction pipe (42). The connecting pipe (44) is installed on the oil pump (41) and is internally connected to the top end inside the cavity of the lubricating oil tank (21).

7. The lubricating mechanism for the input shaft of a tractor gearbox according to claim 2, characterized in that, The cooling mechanism (05) includes a return pipe (51), a heat dissipation pipe (52) and a third solenoid valve (53). The return pipe (51) is installed on the sleeve (14) and is internally connected to the inside of the sleeve (14). The heat dissipation pipe (52) is installed on the return pipe (51) and is internally connected to the return pipe (51). The third solenoid valve (53) is installed on the heat dissipation pipe (52).

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