Gearbox shell, gearbox and vehicle

Abstract

The utility model belongs to the technical field of gearboxes, and discloses a gearbox shell, a gearbox and a vehicle, the gearbox shell comprises a main shell body, a first cavity, a second cavity, a first through hole and a second through hole are formed in the main shell body, lubricating oil is contained in the first cavity, and the first through hole and the second through hole are both communicated with the first cavity and the second cavity. The first penetrating hole is located below the first penetrating hole, a first bearing is arranged in the first penetrating hole, the first transmission shaft is rotationally connected with the first penetrating hole through the first bearing, and an oil collecting hole communicating with the first penetrating hole is formed in the side, facing the second cavity, of the main shell; the gearbox comprises the gearbox shell and further comprises a motor, a first transmission shaft and a second transmission shaft. The vehicle comprises the gearbox and further comprises a chassis, and the gearbox is arranged in the chassis. According to the gearbox shell, lubricating oil in the first cavity enters the second cavity and flows into the second penetrating hole through the oil collecting hole so as to effectively lubricate the first transmission shaft and the first bearing, and the service life is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a gearbox housing, a gearbox, and a vehicle. Background Technology

[0002] In related technologies, the internal cavity of a gearbox generally contains lubricating oil to reliably and effectively lubricate the drive shaft, gear set, and other structures housed within the cavity. Specifically, the drive shaft is rotatably supported within the gearbox housing by bearings. When the drive shaft drives the gear set to rotate, the gear set agitates the lubricating oil, which splashes onto the drive shaft and bearings, thus lubricating them. However, splash lubrication is a passive lubrication method, and the amount of oil splashed onto the bearings is random and variable. For the support end of the drive shaft that passes through the bearing, the amount of lubricating oil it comes into contact with is relatively small. The small amount of lubricating oil flowing through the gap between the bearing and the drive shaft is insufficient for adequate lubrication, which will greatly shorten the service life of the bearings and the drive shaft. Utility Model Content

[0003] The purpose of this utility model is to provide a gearbox housing, gearbox, and vehicle that can reliably and adequately lubricate the end of the drive shaft and the bearing, effectively improving the service life of the bearing and the drive shaft.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A gearbox housing includes a main housing, wherein the main housing has a first cavity, a second cavity, a first through hole, and a second through hole; wherein the first cavity and the second cavity are spaced apart, and the first cavity contains lubricating oil; the first through hole and the second through hole both connect the first cavity and the second cavity, the first through hole is located below the second through hole, the first through hole is provided with a first bearing, and a first drive shaft is rotatably connected to the first through hole through the first bearing;

[0006] The main housing has an oil collection hole on the side facing the second cavity that communicates with the first perforation. The lubricating oil in the first cavity enters the second cavity through the second perforation and flows through the oil collection hole.

[0007] Preferably, the first perforation includes a first hole portion, a second hole portion, and a first stepped end face. The first hole portion is connected to the first cavity, the second hole portion is connected to the oil collection hole, the diameter of the second hole portion is smaller than that of the first hole portion, the first stepped end face is connected between the first hole portion and the second hole portion, and the first bearing is installed in the first hole portion and abuts against the first stepped end face.

[0008] Preferably, the diameter of the oil collecting hole is smaller than that of the second hole, and a second stepped end face is connected between the second hole and the oil collecting hole. The first stepped end face, the corresponding ends of the first bearing and the first drive shaft are flush. The second stepped end face, the second hole, the corresponding ends of the first bearing and the first drive shaft together form a receiving cavity that can accommodate the lubricating oil.

[0009] Preferably, the main housing is provided with a second drive shaft, the second drive shaft passes through the second through hole, the second through hole is provided with a second bearing, and the second drive shaft is rotatably connected to the second through hole through the second bearing.

[0010] Preferably, the second perforation includes a third hole, a fourth hole, and a third stepped end face. The third hole connects to the first cavity, the fourth hole connects to the second cavity, the second drive shaft passes through the third hole and the fourth hole, the diameter of the fourth hole is smaller than that of the third hole, and the second bearing is located in the third hole and abuts against the third stepped end face.

[0011] Preferably, the end of the oil collecting hole facing the first perforation is provided with a transition chamfer or transition fillet.

[0012] Preferably, the lower wall of the oil collecting hole is configured to be inclined downward toward the first drive shaft.

[0013] A transmission, comprising the transmission housing as described in any one of the preceding claims, further comprising:

[0014] The motor is located inside the second cavity;

[0015] A first drive shaft is located inside the first cavity and rotatably connected to the first through hole;

[0016] The second drive shaft is rotatably connected to the second through hole. The second drive shaft passes through the second through hole and is connected to the motor. The first drive shaft and the second drive shaft are connected by a gear assembly, which is located in the first cavity.

[0017] Preferably, the gear assembly includes a first gear and a second gear, with the first gear on the second drive shaft and the second gear on the first drive shaft, and the first gear meshing with the second gear.

[0018] A vehicle includes a transmission as described in any of the preceding claims, and also includes a chassis, wherein the transmission is disposed within the chassis.

[0019] Beneficial effects:

[0020] The gearbox housing provided by this utility model includes a first cavity containing lubricating oil to lubricate the portion of the first drive shaft and the first bearing facing the first cavity. During the rotation of the first drive shaft, some of the lubricating oil in the first cavity is agitated and passes through the second perforation into the second cavity. Subsequently, it falls under gravity to the oil collection hole and finally flows back to the first perforation, thus lubricating the portion of the first drive shaft and the first bearing facing the second cavity. This effectively lubricates both sides of the first drive shaft and the first bearing, effectively extending the service life of the first bearing and the first drive shaft. Attached Figure Description

[0021] Figure 1 This is a partial structural cross-sectional view of the gearbox provided by this utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the gearbox housing provided by this utility model.

[0023] In the picture:

[0024] 1. Main housing; 11. First cavity; 12. Second cavity; 13. First through hole; 131. First hole portion; 132. Second hole portion; 133. First stepped end face; 134. Second stepped end face; 14. Second through hole; 141. Third hole portion; 142. Fourth hole portion; 143. Third stepped end face; 15. Oil collection hole; 16. Receiving cavity;

[0025] 21. First drive shaft; 22. Second drive shaft; 23. First bearing; 24. Second bearing; 25. First gear; 26. Second gear. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] This embodiment provides a gearbox housing. (Refer to...) Figures 1 to 2 As shown, the gearbox housing includes a main housing 1, which has a first cavity 11, a second cavity 12, a first through hole 13, and a second through hole 14. The first cavity 11 and the second cavity 12 are spaced apart, and the first cavity 11 contains lubricating oil. Both the first through hole 13 and the second through hole 14 connect the first cavity 11 and the second cavity 12. The first through hole 13 is located below the second through hole 14 and has a first bearing 23. A first drive shaft 21 is rotatably connected to the first through hole 13 via the first bearing 23. An oil collecting hole 15, connected to the first through hole 13, is provided on the side of the main housing 1 facing the second cavity 12. The lubricating oil in the first cavity 11 enters the second cavity 12 through the second through hole 14 and flows through the oil collecting hole 15.

[0031] In this embodiment, the first cavity 11 of the gearbox housing is provided with lubricating oil to lubricate the portion of the first drive shaft 21 and the first bearing 23 facing the first cavity 11. During the rotation of the first drive shaft 21, some of the lubricating oil in the first cavity 11 is agitated and passes through the second perforation 14 into the second cavity 12. Subsequently, it falls to the oil collection hole 15 under gravity and finally flows to the first perforation 13 to lubricate the portion of the first drive shaft 21 and the first bearing 23 facing the second cavity 12. This effectively lubricates both sides of the first drive shaft 21 and the first bearing 23, thereby effectively improving the service life of the first bearing 23 and the first drive shaft 21.

[0032] In this embodiment, the first through hole 13 includes a first hole portion 131, a second hole portion 132, and a first stepped end face 133. The first hole portion 131 connects to the first cavity 11, and the second hole portion 132 connects to the oil collection hole 15. The diameter of the second hole portion 132 is smaller than that of the first hole portion 131. The first stepped end face 133 connects the first hole portion 131 and the second hole portion 132. The first bearing 23 is installed in the first hole portion 131 and abuts against the first stepped end face 133. Specifically, the diameter of the second hole portion 132 is smaller than that of the first hole portion 131, that is, the first through hole 13 is a stepped hole structure. The first stepped end face 133 connects the first hole portion 131 and the second hole portion 132. The first bearing 23 is installed in the first hole portion 131 and can abut against the first stepped end face 133, thereby achieving reliable and stable installation of the first bearing 23.

[0033] Furthermore, a second stepped end face 134 connects the second hole 132 and the oil collecting hole 15. The corresponding ends of the first stepped end face 133, the first bearing 23, and the first drive shaft 21 are flush. The second stepped end face 134, the second hole 132, the first bearing 23, and the corresponding ends of the first drive shaft 21 together form a receiving cavity 16 capable of accommodating lubricating oil. Specifically, some of the lubricating oil in the first cavity 11 is agitated and passes through the second through hole 14 into the second cavity 12. Then, it falls to the oil collecting hole 15 under gravity and finally falls into the receiving cavity 16. The receiving cavity 16 can accumulate lubricating oil for a certain period of time, thereby reliably and effectively lubricating the portion of the first drive shaft 21 and the first bearing 23 facing the second cavity 12.

[0034] In this embodiment, a second drive shaft 22 is provided inside the main housing 1. The second drive shaft 22 passes through a second through hole 14, and a second bearing 24 is provided in the second through hole 14. The second drive shaft 22 is rotatably connected to the second through hole 14 through the second bearing 24. Specifically, the lubricating oil in the first cavity 11 splashes onto the second drive shaft 22 and the second bearing 24, and can flow to the second cavity 12 through the gaps between the second drive shaft 22, the second bearing 24, and the second bearing 24 itself.

[0035] Specifically, the second through hole 14 includes a third hole portion 141, a fourth hole portion 142, and a third stepped end face 143. The third hole portion 141 connects to the first cavity 11, and the fourth hole portion 142 connects to the second cavity 12. The second drive shaft 22 passes through the third hole portion 141 and the fourth hole portion 142. The diameter of the fourth hole portion 142 is smaller than that of the third hole portion 141. The second bearing 24 is located inside the third hole portion 141 and abuts against the third stepped end face 143. Specifically, the arrangement of the third hole portion 141 and the fourth hole portion 142, that is, the second through hole 14 is configured as a stepped hole structure, with the larger end of the stepped hole facing the first cavity 11. With this arrangement, the third stepped end face 143 between the third hole portion 141 and the fourth hole portion 142 can reliably limit the installation of the second bearing 24, ensuring that the position of the second bearing 24 can be reliably and stably maintained.

[0036] In this embodiment, the end of the oil collecting hole 15 facing the first through hole 13 is provided with a transition chamfer or a transition fillet. By providing a transition chamfer or a transition fillet, the lubricating oil in the oil collecting hole 15 can reliably and effectively flow into the first through hole 13 under its own weight when it flows to the transition chamfer or transition fillet, further ensuring the reliable flow of the lubricating oil.

[0037] As an optional implementation, the lower wall of the oil collecting hole 15 is configured to slope downward toward the first drive shaft 21. This configuration allows the lubricating oil on the lower wall of the oil collecting hole 15 to flow more reliably and effectively into the first through hole 13 under its own weight, further ensuring reliable flow of the lubricating oil.

[0038] This embodiment also provides a gearbox. The gearbox includes the gearbox housing described above, and further includes a motor, a first drive shaft 21, and a second drive shaft 22. The motor is located within a second cavity 12; the first drive shaft 21 is located within a first cavity 11 and rotatably connected to a first through hole 13; the second drive shaft 22 is rotatably connected to a second through hole 14, passing through the second through hole 14 and connected to the motor. The second drive shaft 21 and the first drive shaft 22 are connected via a gear assembly located within the first cavity 11. Specifically, the first drive shaft 21 is rotatably connected to the first through hole 13 via a first bearing 23, and the second drive shaft 22 is rotatably connected to the second through hole 14 via a second bearing 24.

[0039] Furthermore, the gear assembly includes a first gear 25 and a second gear 26. The first gear 25 is mounted on the second drive shaft 22, and the second gear 26 is mounted on the first drive shaft 21. The first gear 25 and the second gear 26 are meshed together. Both the first gear 25 and the second gear 26 are located within the first cavity 11, and are partially immersed in lubricating oil. Specifically, the second drive shaft 22 functions as the input shaft in the gearbox, and the first drive shaft 21 functions as the output shaft. The meshing rotation of the first gear 25 and the second gear 26 agitates and splashes the lubricating oil within the first cavity 11.

[0040] This embodiment also provides a vehicle including the above-described gearbox, and further including a chassis, with the gearbox disposed within the chassis.

[0041] By installing the gearbox housing provided in this embodiment on the vehicle and gearbox, all the beneficial effects of a gearbox housing can be achieved. Specifically, during the rotation of the first drive shaft 21, the first gear 25 and the second gear 26 agitate the lubricating oil, causing some of the lubricating oil in the first cavity 11 to be agitated, pass through the second perforation 14, enter the second cavity 12, fall under gravity to the oil collection hole 15, and finally flow to the first perforation 13, thus lubricating the portion of the first drive shaft 21 and the first bearing 23 facing the second cavity 12. Both sides of the first drive shaft 21 and the first bearing 23 can be effectively lubricated, effectively extending the service life of the first bearing 23 and the first drive shaft 21.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gearbox housing, characterized in that, The system includes a main housing (1), which has a first cavity (11), a second cavity (12), a first through hole (13), and a second through hole (14). The first cavity (11) and the second cavity (12) are spaced apart, and the first cavity (11) contains lubricating oil. The first through hole (13) and the second through hole (14) are connected to the first cavity (11) and the second cavity (12). The first through hole (13) is located below the second through hole (14). The first through hole (13) is provided with a first bearing (23), and a first drive shaft (21) is rotatably connected to the first through hole (13) through the first bearing (23). The main housing (1) has an oil collection hole (15) connected to the first through hole (13) on the side facing the second cavity (12). The lubricating oil in the first cavity (11) can enter the second cavity (12) through the second through hole (14) and flow to the oil collection hole (15).

2. The gearbox housing according to claim 1, characterized in that, The first perforation (13) includes a first hole (131), a second hole (132), and a first stepped end face (133). The first hole (131) is connected to the first cavity (11), the second hole (132) is connected to the oil collection hole (15), the diameter of the second hole (132) is smaller than that of the first hole (131), the first stepped end face (133) is connected between the first hole (131) and the second hole (132), and the first bearing (23) is installed in the first hole (131) and abuts against the first stepped end face (133).

3. The gearbox housing according to claim 2, characterized in that, The diameter of the oil collecting hole (15) is smaller than that of the second hole (132). A second stepped end face (134) is connected between the second hole (132) and the oil collecting hole (15). The first stepped end face (133), the first bearing (23), and the corresponding ends of the first drive shaft (21) are flush. The second stepped end face (134), the second hole (132), the first bearing (23), and the corresponding ends of the first drive shaft (21) together form a receiving cavity (16) that can accommodate the lubricating oil.

4. The gearbox housing according to claim 1, characterized in that, The main housing (1) is provided with a second drive shaft (22), the second drive shaft (22) passes through the second through hole (14), the second through hole (14) is provided with a second bearing (24), and the second drive shaft (22) is rotatably connected to the second through hole (14) through the second bearing (24).

5. The gearbox housing according to claim 4, characterized in that, The second through hole (14) includes a third hole (141), a fourth hole (142), and a third stepped end face (143). The third hole (141) is connected to the first cavity (11), and the fourth hole (142) is connected to the second cavity (12). The second drive shaft (22) passes through the third hole (141) and the fourth hole (142). The diameter of the fourth hole (142) is smaller than that of the third hole (141). The second bearing (24) is located in the third hole (141) and abuts against the third stepped end face (143).

6. The gearbox housing according to claim 1, characterized in that, The oil collection hole (15) has a transition chamfer or transition fillet at one end facing the first through hole (13).

7. The gearbox housing according to claim 1, characterized in that, The lower wall of the oil collection hole (15) is configured to be inclined downward toward the first drive shaft (21).

8. A gearbox, characterized in that, Including the gearbox housing as described in any one of claims 1-7, further comprising: The motor is located inside the second cavity (12); The first drive shaft (21) is located in the first cavity (11) and rotatably connected to the first through hole (13); The second drive shaft (22) is rotatably connected to the second through hole (14). The second drive shaft (22) passes through the second through hole (14) and is connected to the motor. The first drive shaft (21) and the second drive shaft (22) are connected by a gear assembly, which is located in the first cavity (11).

9. The gearbox according to claim 8, characterized in that, The gear assembly includes a first gear (25) and a second gear (26). The first gear (25) is provided on the second transmission shaft (22), and the second gear (26) is provided on the first transmission shaft (21). The first gear (25) and the second gear (26) are meshed together.

10. A vehicle, characterized in that, The system includes the gearbox as described in any one of claims 8-9, and also includes a chassis, wherein the gearbox is disposed within the chassis.

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