Lubricating oil pump mechanism integrated in transmission system and tractor

Abstract

The utility model provides a lubricating oil pump mechanism integrated in a transmission system and a tractor. In a lubricating oil pump mechanism integrated in a transmission system, a lubricating pump front shell and a lubricating pump rear shell are both connected with a front shell, a pressure oil cavity is formed between the lubricating pump front shell and the front shell, the lubricating pump rear shell is connected with the lubricating pump front shell, a cavity is formed between the lubricating pump rear shell and the lubricating pump front shell, and the pressure oil cavity is connected with the pressure oil cavity. The lubricating pump driving shaft is rotationally installed on the lubricating pump front shell and the lubricating pump rear shell, the front-end input shaft is connected with the lubricating pump driving shaft, the transmission system shaft is arranged on the front-end input shaft in a sleeved mode, a middle oil duct is arranged on the transmission system shaft, the oil suction port is installed on the rear shell, the oil duct is installed on the lubricating pump rear shell, and the oil outlet is installed on the lubricating pump front shell. The oil suction port is communicated with the oil duct, the oil duct and the oil outlet are both communicated with the cavity, and the pressure oil cavity is respectively communicated with the oil outlet and a middle oil duct on the transmission system shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of driveline lubrication, in particular to an oil pump mechanism integrated into a driveline and a tractor. Background Art

[0002] As an agricultural machine, a tractor needs to operate reliably to cope with different working conditions. Driveline lubrication is an important part to ensure the reliable operation of the tractor's driveline.

[0003] In the traditional structure, the oil pump is usually externally placed separately, and it is necessary to separately arrange an oil pump gear set and separately arrange oil pipes to connect to the driveline, with a complex structure and difficult layout. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an oil pump mechanism integrated into a driveline and a tractor in view of the deficiencies of the prior art.

[0005] The technical solution of the utility model to solve the above technical problem is as follows: An oil pump mechanism integrated into a driveline, comprising: a front housing, a lubricating pump front housing, a lubricating pump rear housing, a rear housing, a driveline shaft, a front-end input shaft, a lubricating pump drive shaft, a suction port, an oil passage, and an oil outlet. The lubricating pump front housing and the rear housing are both connected to the front housing. A pressure oil chamber is provided between the lubricating pump front housing and the front housing. The lubricating pump rear housing is connected to the lubricating pump front housing, and a cavity is provided between the lubricating pump rear housing and the lubricating pump front housing. The lubricating pump drive shaft is rotatably installed on the lubricating pump front housing and the lubricating pump rear housing. The front-end input shaft is connected to the lubricating pump drive shaft. The driveline shaft is sleeved on the front-end input shaft. An intermediate oil passage is provided on the driveline shaft. The suction port is installed on the rear housing. The oil passage is installed on the lubricating pump rear housing. The oil outlet is installed on the lubricating pump front housing. The suction port is communicated with the oil passage. Both the oil passage and the oil outlet are communicated with the cavity. The pressure oil chamber is respectively communicated with the oil outlet and the intermediate oil passage on the driveline shaft.

[0006] The beneficial effect of adopting the technical solution of the utility model is: The oil pump structure integrated into the driveline breaks the conventional form of externally placing the oil pump separately, directly drives the oil pump to lubricate each part of the driveline through the internal oil passage of the driveline, without the need to separately arrange an oil pump gear set and without the need to separately arrange oil pipes to connect to the driveline, with a more compact structure and simpler layout.

[0007] Further, a lubricating pump external gear and a lubricating pump internal gear are provided in the cavity between the rear housing of the lubricating pump and the front housing of the lubricating pump. The lubricating pump drive shaft is connected to the lubricating pump internal gear, and the lubricating pump external gear is sleeved outside the lubricating pump internal gear.

[0008] The beneficial effect of adopting the above further technical solution is that the front-end input shaft is connected to drive the lubricating pump drive shaft, and then drives the lubricating pump internal gear to rotate, and the lubricating pump external gear also rotates in the same direction. During the rotation process, the sealed cavity formed by the lubricating pump internal gear and the lubricating pump external gear expands, and the lubricating oil in the rear housing is sucked into the space between the teeth of the lubricating pump internal gear and the lubricating pump external gear through the oil suction port and the oil passage. Continuing to rotate, the sealed cavity formed by the lubricating pump internal gear and the lubricating pump external gear is compressed, and the lubricating oil is discharged through the oil outlet.

[0009] Further, both the lubricating pump external gear and the lubricating pump internal gear are cycloidal gears; the lubricating pump external gear has one more tooth than the lubricating pump internal gear; the lubricating pump external gear and the lubricating pump internal gear are eccentrically assembled; multiple points of meshing occur between the lubricating pump external gear and the lubricating pump internal gear to form multiple sealed cavities.

[0010] Further, lubricating oil is provided in the rear housing, and the oil suction port is communicated with the rear housing.

[0011] The beneficial effect of adopting the above further technical solution is that it is convenient for the lubricating oil in the rear housing to be sucked into the space between the teeth of the lubricating pump internal gear and the lubricating pump external gear through the oil suction port and the oil passage.

[0012] Further, a baffle is installed on the front housing, the front housing of the lubricating pump is connected to the baffle, and a pressure oil cavity is provided between the front housing of the lubricating pump and the baffle.

[0013] The beneficial effect of adopting the above further technical solution is that it is convenient for the front housing of the lubricating pump and the baffle to form a pressure oil cavity. It is convenient for the lubricating oil to enter the transmission system through the intermediate oil passage of the transmission system shaft to lubricate the transmission system.

[0014] Further, a sealing ring is provided between the front housing of the lubricating pump and the baffle.

[0015] The beneficial effect of adopting the above further technical solution is that the front housing of the lubricating pump, the sealing ring, and the baffle form a pressure oil cavity. It is convenient for the lubricating oil to enter the transmission system through the intermediate oil passage of the transmission system shaft to lubricate the transmission system. Improve the sealing performance.

[0016] Further, the front-end input shaft is connected to the lubricating pump drive shaft through a spline; the transmission system shaft is connected to a transmission system, and the intermediate oil passage on the transmission system shaft is communicated with the transmission system; a sealing ring is provided between the transmission system shaft and the front housing.

[0017] The beneficial effects of adopting the above further technical solution are as follows: The front-end input shaft drives the lubricating pump drive shaft through spline connection, and then drives the internal gear of the lubricating pump to rotate. The lubricating oil enters the transmission system through the middle oil passage of the transmission shaft to lubricate the transmission system.

[0018] Further, the rear housing of the lubricating pump is connected to the front housing of the lubricating pump by bolts; the lubricating pump drive shaft is rotatably installed on the front housing of the lubricating pump and the rear housing of the lubricating pump through bearings respectively.

[0019] The beneficial effects of adopting the above further technical solution are as follows: It is convenient for the installation and maintenance of the lubricating oil pump. It is convenient for the rotation of the lubricating pump drive shaft.

[0020] Further, the oil outlet is an arc-shaped oil outlet.

[0021] The beneficial effects of adopting the above further technical solution are as follows: The sealing cavity formed by the internal gear and the external gear of the lubricating pump is compressed, and the lubricating oil is discharged through the arc-shaped oil outlet. The arc-shaped oil outlet adapts to the internal structure of the transmission system, facilitating the flow of lubricating oil and having a compact structure.

[0022] In addition, the present utility model also provides a tractor, including a lubricating oil pump mechanism integrated into the transmission system as described in any one of the above.

[0023] Advantages of additional aspects of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0024] Figure 1 It is one of the structural schematic diagrams of the lubricating oil pump mechanism integrated into the transmission system provided by the embodiment of the present utility model.

[0025] Figure 2 It is the second structural schematic diagram of the lubricating oil pump mechanism integrated into the transmission system provided by the embodiment of the present utility model.

[0026] Figure 3 It is the structural relationship schematic diagram of the external gear and the internal gear of the lubricating pump provided by the embodiment of the present utility model.

[0027] Explanation of the reference numerals in the drawings: 1. Sealing ring; 2. Sealing gasket; 3. Baffle; 4. Front housing; 5. Front housing of the lubricating pump; 6. Rear housing of the lubricating pump; 7. External gear of the lubricating pump; 8. Internal gear of the lubricating pump; 9. Rear housing; 10. Transmission shaft; 11. Front-end input shaft; 12. Lubricating pump drive shaft; 13. Oil suction port; 14. Oil passage; 15. Oil outlet. Detailed Embodiments

[0028] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The embodiments cited are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0029] As Figures 1 to 3 shown, an embodiment of the present utility model provides a lubricating oil pump mechanism integrated into a transmission system, including: a front housing 4, a lubricating pump front housing 5, a lubricating pump rear housing 6, a rear housing 9, a transmission system shaft 10, a front-end input shaft 11, a lubricating pump drive shaft 12, a suction port 13, an oil passage 14, and an oil outlet 15. The lubricating pump front housing 5 and the rear housing 9 are both connected to the front housing 4. A pressure oil chamber is provided between the lubricating pump front housing 5 and the front housing 4. The lubricating pump rear housing 6 is connected to the lubricating pump front housing 5. A cavity is provided between the lubricating pump rear housing 6 and the lubricating pump front housing 5. The lubricating pump drive shaft 12 is rotatably installed on the lubricating pump front housing 5 and the lubricating pump rear housing 6. The front-end input shaft 11 is connected to the lubricating pump drive shaft 12. The transmission system shaft 10 is sleeved on the front-end input shaft 11. An intermediate oil passage is provided on the transmission system shaft 10. The suction port 13 is installed on the rear housing 9. The oil passage 14 is installed on the lubricating pump rear housing 6. The oil outlet 15 is installed on the lubricating pump front housing 5. The suction port 13 is communicated with the oil passage 14. Both the oil passage 14 and the oil outlet 15 are communicated with the cavity. The pressure oil chamber is respectively communicated with the oil outlet 15 and the intermediate oil passage on the transmission system shaft 10.

[0030] The beneficial effects of adopting the technical solution of the present utility model are: The lubricating oil pump structure integrated into the transmission system breaks the conventional form of arranging an external oil pump separately, directly drives the lubricating oil pump to lubricate each part of the transmission through the internal oil passage of the transmission system, eliminates the need to arrange a separate oil pump gear set, and eliminates the need to arrange separate oil pipes to connect to the transmission system. The structure is more compact and the layout is simpler.

[0031] As Figures 1 to 3 shown, further, a lubricating pump external gear 7 and a lubricating pump internal gear 8 are provided in the cavity between the lubricating pump rear housing 6 and the lubricating pump front housing 5. The lubricating pump drive shaft 12 is connected to the lubricating pump internal gear 8. The lubricating pump external gear 7 is sleeved outside the lubricating pump internal gear 8.

[0032] The beneficial effects of adopting the above further technical solution are: The front-end input shaft drives the lubricating pump drive shaft, which in turn drives the rotation of the lubricating pump internal gear, and the lubricating pump external gear also rotates in the same direction. During the rotation process, the sealing cavity formed by the lubricating pump internal gear and the lubricating pump external gear expands, and the lubricating oil in the rear housing is inhaled into the tooth space between the lubricating pump internal gear and the lubricating pump external gear through the suction port and the oil passage. Continuing to rotate, the sealing cavity formed by the lubricating pump internal gear and the lubricating pump external gear compresses, and the lubricating oil is discharged through the oil outlet.

[0033] As Figures 1 to 3 shown, further, the external gear 7 of the lubricating pump and the internal gear 8 of the lubricating pump are both cycloidal gears; the external gear 7 of the lubricating pump has one more tooth than the internal gear 8 of the lubricating pump; the external gear 7 of the lubricating pump and the internal gear 8 of the lubricating pump are eccentrically assembled; multiple points of meshing occur between the external gear 7 of the lubricating pump and the internal gear 8 of the lubricating pump to form multiple sealed cavities.

[0034] The beneficial effect of adopting the above further technical solution is that the front input shaft is connected to drive the drive shaft of the lubricating pump, thereby driving the internal gear of the lubricating pump to rotate, and the external gear of the lubricating pump also rotates in the same direction. During the rotation process, the sealed cavity formed by the internal gear and the external gear of the lubricating pump expands, and the lubricating oil in the rear housing is inhaled into the space between the teeth of the internal gear and the external gear of the lubricating pump through the oil suction port and the oil passage. Continuing to rotate, the sealed cavity formed by the internal gear and the external gear of the lubricating pump compresses, and the lubricating oil is discharged through the oil outlet.

[0035] As Figures 1 to 3 shown, further, the rear housing 9 is provided with lubricating oil, and the oil suction port 13 is communicated with the rear housing 9.

[0036] The beneficial effect of adopting the above further technical solution is that it is convenient for the lubricating oil in the rear housing to be inhaled into the space between the teeth of the internal gear and the external gear of the lubricating pump through the oil suction port and the oil passage.

[0037] As Figures 1 to 3 shown, further, a baffle 3 is installed on the front housing 4, the front housing 5 of the lubricating pump is connected to the baffle 3, and a pressure oil cavity is provided between the front housing 5 of the lubricating pump and the baffle 3.

[0038] The beneficial effect of adopting the above further technical solution is that it is convenient for the front housing of the lubricating pump and the baffle to form a pressure oil cavity. It is convenient for the lubricating oil to enter the transmission system through the intermediate oil passage of the transmission shaft to lubricate the transmission system.

[0039] As Figures 1 to 3 shown, further, a sealing ring 2 is provided between the front housing 5 of the lubricating pump and the baffle 3.

[0040] The beneficial effect of adopting the above further technical solution is that the front housing of the lubricating pump, the sealing ring, and the baffle form a pressure oil cavity. It is convenient for the lubricating oil to enter the transmission system through the intermediate oil passage of the transmission shaft to lubricate the transmission system. Improve the sealing performance.

[0041] As Figures 1 to 3As shown in the figure, further, the front input shaft 11 is connected to the lubricating pump drive shaft 12 by splines; the powertrain shaft 10 is connected to a powertrain, and the intermediate oil passage on the powertrain shaft 10 communicates with the powertrain; a sealing ring 1 is provided between the powertrain shaft 10 and the front housing 4.

[0042] The beneficial effects of adopting the above further technical solution are as follows: The front input shaft drives the lubricating pump drive shaft through spline connection, and then drives the inner gear of the lubricating pump to rotate. The lubricating oil enters the powertrain through the intermediate oil passage of the powertrain shaft to lubricate the powertrain system.

[0043] Among them, the intermediate oil passage on the powertrain shaft 10 communicates with the internal oil passage of the powertrain.

[0044] As Figures 1 to 3 shown in the figure, further, the rear housing 6 of the lubricating pump is connected to the front housing 5 of the lubricating pump by bolts; the lubricating pump drive shaft 12 is rotatably installed on the front housing 5 and the rear housing 6 of the lubricating pump through bearings respectively.

[0045] The beneficial effects of adopting the above further technical solution are as follows: It is convenient for the installation and maintenance of the lubricating oil pump. It is convenient for the rotation of the lubricating pump drive shaft.

[0046] As Figures 1 to 3 shown in the figure, further, the oil outlet 15 is an arc-shaped oil outlet.

[0047] The beneficial effects of adopting the above further technical solution are as follows: The sealed cavity formed by the inner gear and the outer gear of the lubricating pump is compressed, and the lubricating oil is discharged through the arc-shaped oil outlet. The arc-shaped oil outlet adapts to the internal structure of the powertrain, facilitating the flow of lubricating oil and having a compact structure.

[0048] The outer gear 7 of the lubricating pump and the inner gear 8 of the lubricating pump are installed in the space formed by the front housing 5 and the rear housing 6 of the lubricating pump. The rear housing 6 of the lubricating pump is connected to the front housing 5 of the lubricating pump by bolts. The lubricating pump drive shaft 12 is connected to the inner gear 8 of the lubricating pump and is installed on the front housing 5 and the rear housing 6 of the lubricating pump through bearings.

[0049] Both the outer gear 7 of the lubricating pump and the inner gear 8 of the lubricating pump are cycloidal gears. The outer gear of the lubricating pump has one more tooth than the inner gear of the lubricating pump. The outer gear and the inner gear of the lubricating pump are eccentrically assembled. The inner gear and the outer gear of the lubricating pump can be meshed at multiple points to form multiple sealed cavities.

[0050] When the tractor starts to work, the front input shaft 11 drives the lubricating pump drive shaft 12 through spline connection, and then drives the inner gear 8 of the lubricating pump to rotate. The outer gear 7 of the lubricating pump also rotates in the same direction. During the rotation process, the sealed cavity formed by the inner gear and the outer gear of the lubricating pump expands. The lubricating oil in the rear housing 9 is inhaled into the tooth space between the inner gear 8 and the outer gear 7 of the lubricating pump through the oil suction port A (oil suction port 13) and the oil passage B (oil passage 14). Continuing to rotate, the sealed cavity formed by the inner gear 8 and the outer gear 7 of the lubricating pump compresses, and the lubricating oil is discharged through the arc-shaped oil outlet C (oil outlet 15). The above process rotates repeatedly, continuously forming a pressure oil cavity in the front housing 5, sealing ring 2, and baffle 3 of the lubricating pump, and then entering the transmission system through the middle oil passage of the transmission shaft 10 to lubricate the transmission system.

[0051] In the above, the oil suction port A is arranged on the rear housing 9, connecting the internal oil fluid (lubricating oil) of the rear housing 9 and the oil passage B; the oil passage B is arranged on the rear housing 6 of the lubricating pump, connecting the oil suction port A and the sealed cavity formed by the outer gear 7 and the inner gear 8 of the lubricating pump; the arc-shaped oil outlet C is arranged on the front housing 5 of the lubricating pump, connecting the sealed cavity formed by the outer gear 7 and the inner gear 8 of the lubricating pump.

[0052] The lubricating oil pump structure integrated into the transmission system (the lubricating oil pump mechanism integrated into the transmission system) breaks the conventional form of arranging a separate external oil pump. It directly drives the lubricating oil pump to lubricate each part of the transmission through the internal oil passage of the transmission system, without the need to separately arrange an oil pump gear set or separately arrange oil pipes to connect to the transmission system. The structure is more compact and the arrangement is simpler.

[0053] In addition, the present utility model also provides a tractor, including the lubricating oil pump mechanism integrated into the transmission system described in any one of the above.

[0054] The beneficial effects of adopting the technical solution of the present utility model are: the lubricating oil pump structure integrated into the transmission system breaks the conventional form of arranging a separate external oil pump. It directly drives the lubricating oil pump to lubricate each part of the transmission through the internal oil passage of the transmission system, without the need to separately arrange an oil pump gear set or separately arrange oil pipes to connect to the transmission system. The structure is more compact and the arrangement is simpler.

[0055] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A lubricating oil pump mechanism integrated in a transmission system, characterized in that: include: A front housing (4), a lubrication pump front housing (5), a lubrication pump rear housing (6), a rear housing (9), a transmission system shaft (10), a front input shaft (11), a lubrication pump drive shaft (12), an oil suction port (13), an oil passage (14), and an oil outlet (15); the lubrication pump front housing (5) and the rear housing (9) are both connected to the front housing (4); a pressure oil chamber is provided between the lubrication pump front housing (5) and the front housing (4); the lubrication pump rear housing (6) is connected to the lubrication pump front housing (5); a cavity is provided between the lubrication pump rear housing (6) and the lubrication pump front housing (5); the lubrication pump drive shaft (12) is rotatably mounted between the lubrication pump front housing (5) and the lubrication pump rear housing (6). On the rear housing (6) of the pump, the front input shaft (11) is connected to the lubrication pump drive shaft (12), the transmission system shaft (10) is sleeved on the front input shaft (11), an intermediate oil passage is provided on the transmission system shaft (10), the oil suction port (13) is mounted on the rear housing (9), the oil passage (14) is mounted on the rear housing (6) of the lubrication pump, the oil outlet (15) is mounted on the front housing (5) of the lubrication pump, the oil suction port (13) is communicated with the oil passage (14), the oil passage (14) and the oil outlet (15) are both communicated with the cavity, and the pressure oil chamber is respectively communicated with the oil outlet (15) and the intermediate oil passage on the transmission system shaft (10).

2. A lubricating oil pump mechanism integrated into a transmission system according to claim 1, characterized in that: A lubrication pump external gear (7) and a lubrication pump internal gear (8) are provided in a cavity between the lubrication pump rear housing (6) and the lubrication pump front housing (5); the lubrication pump drive shaft (12) is connected to the lubrication pump internal gear (8); and the lubrication pump external gear (7) is sleeved on the outside of the lubrication pump internal gear (8).

3. The lubricating oil pump mechanism integrated into the transmission system according to claim 2, characterized in that: The lubrication pump external gear (7) and the lubrication pump internal gear (8) are both cycloid gears; the lubrication pump external gear (7) has one more tooth than the lubrication pump internal gear (8); the lubrication pump external gear (7) and the lubrication pump internal gear (8) are eccentrically assembled; the lubrication pump external gear (7) and the lubrication pump internal gear (8) are meshed at multiple points and form multiple sealed cavities.

4. The lubricating oil pump mechanism integrated into a transmission system according to claim 1, characterized in that: Lubricating oil is provided in the rear housing (9), and the oil suction port (13) is communicated with the rear housing (9).

5. The lubricating oil pump mechanism integrated into a transmission system according to claim 1, characterized in that: A baffle (3) is installed on the front housing (4), the lubrication pump front housing (5) is connected to the baffle (3), and a pressure oil chamber is provided between the lubrication pump front housing (5) and the baffle (3).

6. The lubricating oil pump mechanism integrated into a transmission system according to claim 5, characterized in that: A sealing ring (2) is provided between the front housing (5) of the lubrication pump and the baffle (3).

7. The lubricating oil pump mechanism integrated into a transmission system according to claim 1, characterized in that: The front input shaft (11) is connected to the lubrication pump drive shaft (12) via a spline; the transmission system shaft (10) is connected to the transmission system, and the middle oil passage on the transmission system shaft (10) is connected to the transmission system; a sealing ring (1) is provided between the transmission system shaft (10) and the front housing (4).

8. The lubricating oil pump mechanism integrated into a transmission system according to claim 1, characterized in that: The lubrication pump rear housing (6) is connected to the lubrication pump front housing (5) via bolts; the lubrication pump drive shaft (12) is rotatably mounted on the lubrication pump front housing (5) and the lubrication pump rear housing (6) via bearings.

9. The lubricating oil pump mechanism integrated into a transmission system according to claim 1, characterized in that: The oil outlet (15) is an arc-shaped oil outlet.

10. A tractor, characterized in that: A lubricating oil pump mechanism integrated in a transmission system comprising the lubricating oil pump mechanism as described in any one of claims 1 to 9 above.

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