Gear lubricating structure and vehicle

Abstract

The invention discloses a gear lubricating structure and a vehicle, and relates to the technical field of lubrication.The gear lubricating structure comprises a gear assembly, an oil spraying assembly and an oil guiding shell, the gear assembly comprises a driven gear and a driving gear, and a meshing area and an oil guiding area which are connected end to end are distributed on the periphery of the driving gear in the circumferential direction of the driving gear; the position of the driving gear corresponding to the meshing area is meshed with the driven gear; the oil spraying assembly is arranged corresponding to the meshing area and comprises an oil spraying pipe used for spraying lubricating oil to the meshing area. The oil guide shell covers the outer side of the driving gear, and an oil guide cavity is defined by the oil guide shell and the driving gear. Through the design of the oil guide shell, the driven gear and the driving gear can be evenly covered with lubricating oil no matter the driven gear rotates clockwise or anticlockwise, it is guaranteed that the driven gear and the driving gear are evenly covered with the lubricating oil, and therefore the lubricating effect and the heat dissipation effect of the gears are greatly improved, abrasion of the gears is reduced, and the service life of the gears is prolonged. And the service life of the gear is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of lubrication technology, and in particular to a gear lubrication structure and a vehicle. Background Art

[0002] In a vehicle, a gear pair is used for power transmission. In order to reduce the friction between the gears, the gears need to be lubricated. Most of the gear lubrication in the prior art adopts a splash lubrication solution, where the lubricating oil splashes onto the gears to lubricate the gears.

[0003] In the distributed electric drive vehicles of the prior art, for vehicles equipped with distributed electric drives for both the front and rear wheels, the front and rear electric drives are arranged 180 degrees opposite to each other, and the rotation directions of the front and rear electric drives are opposite, resulting in opposite rotation directions of the gear meshing, that is, the driving directions of the lubricating oil sprayed on the gears are also different. The lubricating oil may be sprayed in from the meshing side of the gear, and the rotation of the gear directly pushes the lubricating oil away in the direction of gear rotation, and the tooth surface cannot be fully covered. Combined with the complex working conditions of off-road vehicles such as climbing or descending at a large angle, the lubricating oil sprayed on the gears cannot be evenly covered on the gears due to the excessively large inclination angle, and the gear lubrication effect cannot be guaranteed by splashing alone, resulting in insufficient gear lubrication and heat dissipation, excessive wear, and affecting the service life of the gears. Summary of the invention

[0004] The main purpose of the present invention is to propose a gear lubrication structure and vehicle, aiming to solve the problem that the spraying lubricating oil technology in the prior art cannot fully cover the tooth surface, resulting in insufficient gear lubrication and heat dissipation, excessive wear, and affecting the service life of the gear.

[0005] To achieve the above-mentioned purpose, the gear lubrication structure proposed by the present invention comprises:

[0006] A gear assembly, the gear assembly comprising a driven gear and a driving gear, the outer periphery of the driving gear having a meshing area and an oil guide area connected end to end distributed along its circumference, the driving gear meshing with the driven gear at a position corresponding to the meshing area;

[0007] An oil spray assembly, the oil spray assembly is arranged corresponding to the meshing area, and the oil spray assembly includes an oil spray pipe for spraying lubricating oil to the meshing area;

[0008] An oil guide shell is provided on the outside of the driving gear and forms an oil guide cavity with the driving gear. The oil guide cavity surrounds the outer circumference of the driving gear and is provided corresponding to the oil guide area. The oil guide shell is used to guide the lubricating oil sprayed to the meshing area into the oil guide cavity.

[0009] In one embodiment, the two ends of the oil guide shell along its circumferential direction are respectively a first end and a second end, the first end is arranged near the top of the meshing area, and the second end is arranged near the bottom of the meshing area, the oil injection pipe is arranged between the first end and the meshing area, and the first end and the second end both form openings, and the lubricating oil sprayed to the meshing area can be guided from one of the openings to the other opening through the oil guide cavity.

[0010] In one embodiment, the height of the second end is higher than the height of the bottom of the driving gear, so that an oil accumulation area for storing lubricating oil is formed below the oil guide cavity, and the bottom of the driving gear is immersed in the oil accumulation area.

[0011] In one embodiment, the oil guide housing includes an oil guide plate and a side plate, the oil guide plate extends along the circumference of the driving gear, the side plate is provided on at least one side of the oil guide plate along the axial direction of the driving gear, the oil guide plate is spaced apart from the outer edge of the driving gear, the side plate blocks the end face of the driving gear, so that the oil guide plate, the side plate and the outer edge of the driving gear form the oil guide cavity, and the outer side of the oil guide plate is connected to a mounting ear, and the mounting ear is used to be connected to a gearbox housing.

[0012] In one embodiment, a plurality of oil guide ribs extending along the circumference of the driving gear are provided on the inner side of the oil guide plate, the plurality of oil guide ribs protrude toward the driving gear and are arranged at intervals along the axial direction of the driving gear to form a plurality of oil guide grooves, and the extension direction of the oil guide grooves is the same as the extension direction of the oil guide cavity.

[0013] In one embodiment, a drainage protrusion extending along the axial direction of the driving gear is formed in each of the oil guiding grooves, and the height of the drainage protrusion is the same as the height of the oil guiding rib.

[0014] In one embodiment, slopes are provided on both sides of the drainage protrusion along the circumference of the driving gear, and the distance between the two slopes is gradually reduced from the outside to the inside.

[0015] In one embodiment, the oil injection assembly further includes an oil baffle plate, which is disposed on one side of the oil injection pipe along the axial direction of the driven gear, and the oil baffle plate blocks the upper part of the meshing area.

[0016] In one embodiment, there is a first gap between the oil injection pipe and the driven gear, and a second gap between the oil injection pipe and the oil guide housing, the first gap and the second gap are located above the meshing area, and the oil baffle includes a first shielding portion and a second shielding portion, the first shielding portion shields the first gap, and the second shielding portion shields the second gap.

[0017] The present invention also provides a vehicle, wherein the gear lubrication structure is applied to the vehicle.

[0018] The technical solution of the present invention is to arrange an oil spray pipe above the meshing area of ​​the driven gear and the driving gear, and to arrange an oil guide shell on the outer side of the driving gear. The oil guide shell and the driving gear form an oil guide chamber, and the oil spray pipe sprays lubricating oil toward the meshing area. When the driving gear rotates counterclockwise in the figure, that is, when the oil spray pipe is located at the meshing side, the oil spray pipe is at the meshing side spraying, and the lubricating oil is sprayed from the meshing side, passes through the meshing area of ​​the gear, and leaves the gear from the meshing side. The lubricating oil on the meshing side moves along the oil guide chamber under the shielding of the oil guide plate and driven by the driving gear, thereby ensuring that it is in full contact with the driving gear and evenly covers the tooth surface of the driving gear. At the same time, after the lubricating oil travels along the oil guide chamber for one circle, it enters the meshing area again from the meshing side. Through the meshing cooperation of the driving gear and the driven gear, the lubricating oil is evenly covered on the driving gear and the driven gear again, so that the tooth surfaces of the driven gear and the driving gear are fully and evenly covered with the lubricating oil.

[0019] When the driving gear rotates clockwise in the figure, that is, when the oil injection pipe is located on the meshing side, when the lubricating oil is sprayed to the meshing area of ​​the gear, it will be stirred away from the gear as the gear rotates. At this time, the oil guide shell will be blocked by the stirred lubricating oil, and the lubricating oil will be introduced into the oil guide cavity. Driven by the driving gear, it moves along the oil guide cavity, thereby ensuring that it is in full contact with the driving gear and evenly covers the tooth surface of the driving gear. At the same time, the lubricating oil enters the meshing area from the meshing side after traveling along the oil guide cavity for one circle. Through the meshing cooperation of the driving gear and the driven gear, the lubricating oil is evenly covered on the driving gear and the driven gear again, so that the tooth surfaces of the driven gear and the driving gear are fully and evenly covered with lubricating oil.

[0020] The present invention adopts the design of the oil guide shell, so that no matter whether the driven gear rotates clockwise or counterclockwise, the lubricating oil can be fully and evenly covered on the tooth surfaces of the driven gear and the driving gear. At the same time, due to the shielding and guiding effect of the oil guide chamber on the lubricating oil, the lubricating oil will not leak from the gear when the vehicle is tilted, ensuring that the lubricating oil is fully and evenly covered on the tooth surfaces of the driven gear and the driving gear, thereby greatly improving the lubrication effect and heat dissipation effect of the gear, reducing the wear of the gear, and extending the service life of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a gear lubrication structure provided by the present invention;

[0023] Figure 2 A schematic diagram of the structure of the oil injection assembly of the gear lubrication structure provided by the present invention;

[0024] Figure 3 A schematic cross-sectional view of the oil injection assembly of the gear lubrication structure provided by the present invention;

[0025] Figure 4 A schematic structural diagram of an oil guide housing of an embodiment of a gear lubrication structure provided by the present invention;

[0026] Figure 5 A schematic structural diagram of an oil guide housing of another embodiment of the gear lubrication structure provided by the present invention.

[0027] Description of Figure Numbers:

[0028] 100. Gear lubrication structure; 1. Gear assembly; 11. Driven gear; 12. Driving gear; 13. Meshing area; 14. Oil guide area; 2. Oil injection assembly; 21. Oil injection pipe; 22. Oil baffle plate; 23. First shielding portion; 24. Second shielding portion; 3. Oil guide shell; 31. Oil guide cavity; 32. First end; 33. Second end; 34. Opening; 35. Oil accumulation area; 36. Oil guide plate; 361. Oil guide rib; 362. Oil guide groove; 363. Drainage protrusion; 364. Slope; 37. Side plate; 38. Mounting ear.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] In the distributed electric drive vehicles of the prior art, for vehicles with distributed electric drives on both the front and rear wheels, the front and rear electric drives are arranged 180 degrees opposite to each other, and the rotation directions of the front and rear electric drives are opposite, resulting in opposite rotation directions of the gear meshing, that is, the driving directions of the lubricating oil sprayed on the gears are also different. The lubricating oil may be sprayed in from the meshing side of the gear, and the rotation of the gear directly pushes the lubricating oil away in the opposite direction of the gear rotation, and the gear cannot be covered. Combined with the complex working conditions of off-road vehicles such as climbing or descending at a large angle, the lubricating oil sprayed on the gears cannot be evenly covered on the gears due to the excessively large inclination angle, and the gear lubrication effect cannot be guaranteed by splashing alone, resulting in insufficient gear lubrication and heat dissipation, excessive wear, and affecting the service life of the gears.

[0034] In order to solve the above problems, the present invention provides a gear lubrication structure 100 .

[0035] See also Figure 1 In one embodiment of the present invention, the gear lubrication structure 100 includes a gear assembly 1, an oil spray assembly 2 and an oil guide housing 3. The gear assembly 1 includes a driven gear 11 and a driving gear 12. The outer periphery of the driving gear 12 is provided with a meshing area 13 and an oil guide area 14 connected end to end along its circumference. The driving gear 12 meshes with the driven gear 11 at a position corresponding to the meshing area 13; the oil spray assembly 2 is arranged corresponding to the meshing area 13, and the oil spray assembly 2 includes an oil spray pipe 21 for spraying lubricating oil to the meshing area 13; the oil guide housing 3 is covered on the outer side of the driving gear 12 and encloses an oil guide cavity 31 with the driving gear 12. The oil guide cavity 31 surrounds the outer periphery of the driving gear 12 and is arranged corresponding to the oil guide area 14. The oil guide housing 3 is used to guide the lubricating oil sprayed to the meshing area 13 into the oil guide cavity 31.

[0036] It can be understood that the meshing portion of the driven gear 11 and the driving gear 12 is the meshing area 13. The range of the meshing area 13 varies depending on the sizes of the driven gear 11 and the driving gear 12. The oil spray pipe 21 sprays lubricating oil directly from the top of the meshing area 13 toward the meshing portion of the driven gear 11 and the driving gear 12. The top here refers to the top of the corresponding meshing area 13 when the vehicle is on flat ground, rather than the top when the vehicle is extremely tilted.

[0037] The technical solution of the present invention is to arrange an oil spray pipe 21 above the meshing area 13 of the driven gear 11 and the driving gear 12, and arrange an oil guide housing 3 on the outside of the driving gear 12. The oil guide housing 3 and the driving gear 12 form an oil guide cavity 31. The oil spray pipe 21 sprays lubricating oil toward the meshing area 13. When the driving gear 12 rotates counterclockwise in the figure, that is, when the oil spray pipe 21 is located on the meshing side, the oil spray pipe 21 is sprayed on the meshing side, and the lubricating oil is sprayed from the meshing side, passes through the gear meshing area 13, and leaves the gear from the meshing side. The lubricating oil on the outlet side moves along the oil guide chamber 31 under the shielding of the oil guide plate 36 and driven by the driving gear 12, thereby ensuring that it is in full contact with the driving gear 12 and evenly covers the tooth surface of the driving gear 12. At the same time, after traveling along the oil guide chamber 31 for one circle, the lubricating oil enters the meshing area from the meshing side again, and through the meshing cooperation of the driving gear and the driven gear, the lubricating oil is evenly covered on the driving gear 12 and the driven gear 11 again, so that the tooth surfaces of the driving gear 12 and the driven gear 11 are also fully and evenly covered with the lubricating oil;

[0038] When the driving gear 12 rotates clockwise in the figure, that is, when the oil injection pipe 21 is located on the meshing side, when the lubricating oil is sprayed to the meshing area of ​​the gear, it will be stirred away from the gear as the gear rotates. At this time, the oil guide shell 3 will be blocked by the stirred lubricating oil, and the lubricating oil will be introduced into the oil guide cavity 31. Driven by the driving gear 12, it moves along the oil guide cavity 31, so as to ensure that it is in full contact with the driving gear 12 and evenly covers the tooth surface of the driving gear 12. At the same time, the lubricating oil enters the meshing area from the meshing side after traveling one circle along the oil guide cavity 31. Through the meshing cooperation of the driving gear and the driven gear, the lubricating oil is covered on the driven gear 11 again, so that the tooth surfaces of the driven gear 11 and the driving gear 12 are fully and evenly covered with lubricating oil.

[0039] The present invention adopts the design of the oil guide housing 3, so that no matter whether the driven gear 11 rotates clockwise or counterclockwise, the lubricating oil can be fully and evenly covered on the tooth surfaces of the driven gear 11 and the driving gear 12. At the same time, due to the shielding and guiding effect of the oil guide cavity 31 on the lubricating oil, the lubricating oil will not leak from the gear when the vehicle is tilted, ensuring that the lubricating oil is fully and evenly covered on the tooth surfaces of the driven gear 11 and the driving gear 12, thereby greatly improving the lubrication effect and heat dissipation effect of the gear, reducing the wear of the gear, and extending the service life of the gear.

[0040] Specifically, the two ends of the oil guide shell 3 along its circumferential direction are respectively a first end 32 and a second end 33, the first end 32 is arranged near the top of the meshing area 13, and the second end 33 is arranged near the bottom of the meshing area 13, the oil injection pipe 21 is arranged between the first end 32 and the meshing area 13, and the first end 32 and the second end 33 both form openings 34, and the lubricating oil sprayed to the meshing area 13 can be guided from one of the openings 34 to the other opening 34 through the oil guide cavity 31. The oil guide shell 3 does not completely cover the driving gear 12. There are gaps between the first end 32 and the second end 33 and the driven gear 11. On the one hand, a larger area can be sprayed with lubricating oil, and on the other hand, sufficient space can be provided for heat dissipation, thereby improving the heat dissipation effect. When the driven gear 11 rotates clockwise, the lubricating oil enters the oil guide cavity 31 from the opening 34 of the second end 33, and then flows out from the opening 34 of the first end 32. When the driven gear 11 rotates counterclockwise, the lubricating oil enters the oil guide cavity 31 from the opening 34 of the first end 32, and then flows out from the opening 34 of the second end 33. The lubricating oil flowing out of the opening 34 will continue to splash toward the driven gear 11 driven by the driving gear 12, thereby performing secondary infiltration on the driven gear 11, thereby improving the lubrication effect on the driven gear 11.

[0041] In one embodiment, the height of the second end 33 is higher than the height of the bottom of the driving gear 12, so that an oil accumulation area 35 capable of accumulating lubricating oil is formed below the oil guide cavity 31, and the bottom of the driving gear 12 is immersed in the oil accumulation area 35. The portion of the oil guide housing 3 below the second end 33 forms an arc-shaped oil accumulation area 35. If too much lubricating oil enters the oil guide cavity 31, it will accumulate in the oil accumulation area 35. When the accumulated lubricating oil reaches a certain height, it can contact the bottom of the driving gear 12, and the lubricating oil is taken away during the rotation of the driving gear 12 for further lubrication, thereby improving the uniformity of the coverage of the lubricating oil and thus improving the lubrication effect.

[0042] Please combine Figure 1 and Figure 4Further, the oil guide housing 3 includes an oil guide plate 36 and a side plate 37. The oil guide plate 36 extends along the circumference of the driving gear 12. The oil guide plate 36 is provided with a side plate 37 on at least one side of the axial direction of the driving gear 12. The oil guide plate 36 is spaced apart from the outer edge of the driving gear 12. The side plate 37 blocks the end surface of the driving gear 12, so that the oil guide plate 36, the side plate 37 and the outer edge of the driving gear 12 form an oil guide cavity 31. The outer side of the oil guide plate 36 is connected with a mounting ear 38, and the mounting ear 38 is used to be connected to the gearbox housing to fix the oil guide housing 3. By arranging side plates 37 on both sides of the oil guide plate 36, it is prevented that the lubricating oil leaks from at least one side in the axial direction of the driving gear 12, and it is ensured that the splashed lubricating oil can be fully collected in the oil guide cavity 31, thereby improving the utilization rate of the lubricating oil and reducing the waste of the lubricating oil. At the same time, the mounting ears 38 are connected and fixed to the external equipment to prevent the oil guide housing 3 from deflecting or shaking, and ensure that the position of the oil guide cavity 31 remains unchanged, which can always guide the lubricating oil, thereby ensuring the lubrication effect.

[0043] See also Figure 5 In one embodiment, a plurality of oil guide ribs 361 extending along the circumference of the driving gear 12 are disposed on the inner side of the oil guide plate 36. The plurality of oil guide ribs 361 protrude toward the driving gear 12 and are disposed at intervals along the axial direction of the driving gear 12 to form a plurality of oil guide grooves 362. The extending direction of the oil guide grooves 362 is the same as the extending direction of the oil guide chamber 31. The plurality of oil guide grooves 362 are divided along the axial direction of the driving gear 12 by the oil guide ribs 361, so that the lubricating oil is prevented from being concentrated in one area, thereby ensuring that the lubricating oil can be evenly covered on the driving gear 12, and then the lubricating oil is covered on the driven gear 11 through the driving gear 12, thereby improving the lubrication effect of the entire transmission assembly.

[0044] Furthermore, each oil guide groove 362 forms a drainage protrusion 363 extending along the axial direction of the driving gear 12, and the height of the drainage protrusion 363 is the same as the height of the oil guide rib 361. By providing the drainage protrusion 363, the lubricating oil in the oil guide groove 362 is bounced up after touching the drainage protrusion 363, and due to the shielding of the guide plate, the lubricating oil can only be bounced up toward the driving gear 12, thereby actively driving the lubricating oil toward the driving gear 12, so that the lubricating oil can be more smoothly guided to the gear meshing side along the oil guide rib 361 under the drive of the driving gear 12, ensuring that the lubricating oil can fully cover the driving gear 12 and the driven gear 11 on the meshing side, thereby improving the lubrication effect.

[0045] Specifically, the drainage protrusion 363 is provided with a slope 364 on both sides of the circumference of the driving gear 12, and the spacing between the two slopes 364 is gradually reduced from the outside to the inside. The slopes 364 are provided on both sides of the drainage protrusion 363, so that no matter whether the lubricating oil moves clockwise or counterclockwise in the oil guide cavity 31, it can be guided by the slope 364, and the spacing between the slopes 364 is gradually reduced from the outside to the inside, so that the slope 364 can guide the lubricating oil to the driving gear 12. By providing the slope 364, the resistance of the lubricating oil is reduced, so that the lubricating oil can move farther toward the driving gear 12, and be stirred more fully by the driving gear 12, and can be more smoothly guided to the gear meshing side along the oil guide rib 361, ensuring that the lubricating oil can fully cover the driving gear 12 and the driven gear 11 on the meshing side, further improving the uniformity of the lubricating oil coverage and the lubrication effect.

[0046] Please combine Figure 2 and Figure 3 In one embodiment, the oil injection assembly 2 further includes an oil baffle plate 22, which is arranged on one side of the oil injection pipe 21 along the axial direction of the driven gear 11, and the oil baffle plate 22 blocks the upper part of the meshing area 13. Since the size of the oil injection pipe 21 is small, it cannot completely block the upper part of the meshing area 13, and some lubricating oil cannot be guided into the oil guide cavity 31 by the oil guide housing 3, but splashes out from the vicinity of the oil injection pipe 21, resulting in a waste of lubricating oil. Therefore, the oil baffle plate 22 is arranged to block the upper part of the meshing area 13, prevent the lubricating oil from splashing out from the vicinity of the oil injection pipe 21, improve the utilization rate of the lubricating oil, and ensure that the lubricating oil can enter the oil guide cavity 31.

[0047] In a specific embodiment, the oil baffle plate 22 is in an inverted bowl-shaped structure, the open end of the oil baffle plate 22 faces the meshing area 13, and the shape of the oil baffle plate 22 can be a cube, a hemispherical shape, or an irregular shape. It is only necessary to block the meshing area 13 and close all the side walls except the side facing the meshing area 13, so as to ensure better blocking of the splashing lubricating oil.

[0048] It should be noted that there needs to be a spacing of 3.5 mm to 4 mm between the oil baffle plate 22 and the driving gear 12 or the driven gear 11 to form a safety gap to avoid interference between the oil baffle plate and the gear, thereby improving the safety of the system.

[0049] Specifically, there is a first gap between the oil injection pipe 21 and the driven gear 11, and there is a second gap between the oil injection pipe 21 and the oil guide housing 3. The first gap and the second gap are located above the meshing area 13. The oil baffle plate 22 includes a first shielding portion 23 and a second shielding portion 24. The first shielding portion 23 shields the first gap, and the second shielding portion 24 shields the second gap. There are gaps on both sides of the oil injection pipe 21. The first shielding portion 23 and the second shielding portion 24 shield both the first gap and the second gap, further improving the shielding range of the meshing area 13, maximally preventing the lubricating oil from splashing out near the oil injection pipe 21, and improving the utilization rate of the lubricating oil.

[0050] The present invention also provides a vehicle, which is applied with the above-mentioned gear lubrication structure 100. The specific structure of the gear lubrication structure 100 refers to the above-mentioned embodiment. Since the vehicle adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0051] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A gear lubrication structure, It is characterized in that include: A gear assembly, the gear assembly comprising a driven gear and a driving gear, the outer periphery of the driving gear having a meshing area and an oil guide area connected end to end distributed along its circumference, the driving gear meshing with the driven gear at a position corresponding to the meshing area; An oil spray assembly, the oil spray assembly is arranged corresponding to the meshing area, and the oil spray assembly includes an oil spray pipe for spraying lubricating oil to the meshing area; An oil guide shell is provided on the outside of the driving gear and forms an oil guide cavity with the driving gear. The oil guide cavity surrounds the outer circumference of the driving gear and is provided corresponding to the oil guide area. The oil guide shell is used to guide the lubricating oil sprayed to the meshing area into the oil guide cavity.

2. The gear lubrication structure according to claim 1, It is characterized in that The two ends of the oil guide shell along its circumferential direction are respectively a first end and a second end, the first end is arranged near the top of the meshing area, and the second end is arranged near the bottom of the meshing area, the oil spray pipe is arranged between the first end and the meshing area, and the first end and the second end both form openings, and the lubricating oil sprayed to the meshing area can be guided from one of the openings to the other opening through the oil guide cavity.

3. The gear lubrication structure according to claim 2, It is characterized in that The height of the second end is higher than the height of the bottom of the driving gear, so that an oil accumulation area for storing lubricating oil is formed below the oil guide cavity, and the bottom of the driving gear is immersed in the oil accumulation area.

4. The gear lubrication structure according to claim 1, It is characterized in that The oil guide housing comprises an oil guide plate and a side plate, the oil guide plate extends along the circumference of the driving gear, the side plate is provided on at least one side of the oil guide plate along the axial direction of the driving gear, the oil guide plate is spaced apart from the outer edge of the driving gear, the side plate blocks the end face of the driving gear, so that the oil guide plate, the side plate and the outer edge of the driving gear form the oil guide cavity, and the outer side of the oil guide plate is connected to a mounting ear, and the mounting ear is used to be connected to a gearbox housing.

5. The gear lubrication structure according to claim 4, It is characterized in that A plurality of oil guide ribs extending along the circumference of the driving gear are arranged on the inner side of the oil guide plate. The plurality of oil guide ribs protrude toward the driving gear and are arranged at intervals along the axial direction of the driving gear to form a plurality of oil guide grooves. The extension direction of the oil guide grooves is the same as the extension direction of the oil guide cavity.

6. The gear lubrication structure according to claim 5, It is characterized in that A drainage protrusion extending along the axial direction of the driving gear is formed in each of the oil guiding grooves, and the height of the drainage protrusion is the same as the height of the oil guiding rib.

7. The gear lubrication structure according to claim 6, It is characterized in that The drainage protrusion is provided with slopes on both sides along the circumference of the driving gear, and the distance between the two slopes is gradually reduced from the outside to the inside.

8. The gear lubrication structure according to any one of claims 1 to 7, It is characterized in that The oil injection assembly further comprises an oil baffle plate, which is arranged on one side of the oil injection pipe along the axial direction of the driven gear, and the oil baffle plate blocks the upper part of the meshing area.

9. The gear lubrication structure according to claim 8, It is characterized in that There is a first gap between the oil injection pipe and the driven gear, and a second gap between the oil injection pipe and the oil guide housing. The first gap and the second gap are located above the meshing area. The oil baffle plate includes a first shielding portion and a second shielding portion. The first shielding portion shields the first gap, and the second shielding portion shields the second gap.

10. A vehicle, It is characterized in that The vehicle is applied with the gear lubrication structure according to any one of claims 1 to 9.

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