CN218408464U

CN218408464U - Gearbox lubricating structure

Info

Publication number: CN218408464U
Application number: CN202222609299.3U
Authority: CN
Inventors: 于凡; 蒙小行; 黄兴明; 贾策东; 王小雪; 孙奥; 位本杰; 柳春汀
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-31
Anticipated expiration: 2032-09-30

Abstract

The utility model relates to a mechanical transmission field, concretely relates to gearbox lubricating structure, it includes the box, rotate in the box and install the transmission shaft, fixed mounting has the sun gear on the transmission shaft, rotate in the box and install a plurality of planet wheels with the sun gear meshing, a plurality of planet wheels encircle the sun gear and arrange, the ring gear is installed in the box in the rotation, the ring gear encircles in a plurality of planet wheel outsides and with the planet wheel meshing, be equipped with first oil transportation passageway in the transmission shaft, the lateral part of transmission shaft is equipped with the first oil transportation hole of the first oil transportation passageway of intercommunication, be equipped with the second oil transportation hole of the first oil transportation hole of intercommunication on the sun gear, be equipped with the fourth oil transportation hole of intercommunication second oil transportation hole on the planet wheel. The gearbox lubricating structure can lubricate the high-level gear in the gearbox, and avoid gear abrasion, so that the normal work of the gearbox is ensured.

Description

Gearbox lubricating structure

Technical Field

The utility model relates to a mechanical transmission field, concretely relates to gearbox lubricating structure.

Background

Because the speed changing box can accurately change the rotating speed ratio and the transmission direction, the speed changing box is widely used on automobiles, tractors, ships, machine tools and various machines and is used for changing the torque, the rotating speed and the transmission direction transmitted from a driving shaft to a driven shaft according to different working conditions.

The planetary reduction is a speed change form of the gearbox, referring to the attached drawing 1, the planetary reduction mainly comprises a sun gear 3, a planet gear 4, a gear ring 5 and a planet carrier 7, and the gearbox runs at a high speed in the working process, so that the lubrication structure of the gearbox is very important, and because each gear has a height difference, the gear at a high position is not easy to contact lubricating oil, so that the tooth wear is serious, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem provide one kind can implement the lubrication to the gear that is in the high-order, avoid gear wear's gearbox lubricating structure.

In order to achieve the purpose, the utility model discloses a gearbox lubricating structure, including the box, its structural feature is: the transmission shaft is installed in the box in a rotating mode, a sun wheel is fixedly installed on the transmission shaft, a plurality of planet wheels meshed with the sun wheel are installed in the box in a rotating mode, the planet wheels are arranged around the sun wheel, a gear ring is installed in the box in a rotating mode, the gear ring surrounds the outer sides of the planet wheels and is meshed with the planet wheels, a first oil conveying channel is arranged in the transmission shaft, a first oil conveying hole communicated with the first oil conveying channel is formed in the side portion of the transmission shaft, a second oil conveying hole communicated with the first oil conveying hole is formed in the sun wheel, and a fourth oil conveying hole communicated with the second oil conveying hole is formed in the planet wheel.

After adopting above-mentioned structure, lubricating oil gets into first oil delivery passageway earlier, then enters into the planet wheel through first oil delivery hole, later under the effect of centrifugal force, lubricates planet wheel and ring gear in proper order, and this structure can implement the lubrication to the overhead gear in the gearbox to ensure gearbox normal work.

Regarding the installation structure of the planet wheel, a planet carrier is rotatably installed in the box body, a planet wheel shaft is arranged on the planet carrier, and the planet wheel is rotatably installed on the planet wheel shaft.

Preferably, a second oil delivery channel is arranged in the planet wheel shaft, a third oil delivery hole is arranged on the side wall of the planet wheel shaft, the third oil delivery hole penetrates through the planet wheel shaft and is communicated with the second oil delivery channel, and the third oil delivery hole is also communicated with a fourth oil delivery hole. And after flowing out of the second oil conveying hole, the lubricating oil enters the second oil conveying channel through the third oil conveying hole under the action of centrifugal force.

Preferably, the box body is internally provided with a clutch, the gear ring is connected with a driven disc of the clutch, and the outer ring of the gear ring and the driven disc are provided with teeth which are meshed with each other. After the driving disk of the clutch is contacted with the driven disk, the position of the gear ring is fixed, and the planet wheel does not idle, so that power is output normally.

Preferably, the side of the gear ring is provided with an extension wall, the extension wall is in a ring shape, and the teeth extend to the extension wall. The extension wall increases the length of the teeth, and ensures that the gear ring is more reliably meshed with the driven disc.

Preferably, a sixth oil transfer hole is formed in the extension wall, a seventh oil transfer hole is formed in the gear ring, the sixth oil transfer hole and the seventh oil transfer hole penetrate through the extension wall and the gear ring respectively, and the sixth oil transfer hole and the seventh oil transfer hole are communicated with the fourth oil transfer hole. And lubricating oil can lubricate the teeth between the gear ring and the driven disc through the sixth oil conveying hole and the seventh oil conveying hole.

Preferably, the inner wall of the extension wall is provided with a fifth oil delivery hole, the fifth oil delivery hole extends obliquely to the outer wall of the gear ring, and the outer end of the fifth oil delivery hole is located in the middle of the sixth oil delivery hole and the seventh oil delivery hole. Through the fifth oil conveying hole, the tooth between the gear ring and the driven disc can be ensured to have no lubrication dead angle.

Preferably, the inner wall of the extension wall is provided with an oil blocking platform in a ring shape, the oil blocking platform is positioned at one end far away from the gear ring, and the oil blocking platform protrudes inwards. The oil blocking platform can prevent the ineffective loss of lubricating oil, and the gear ring locks the flowing direction of the lubricating oil by adding the directional lubricating oil holes, so that the lubricating effect of the whole machine is improved.

Preferably, one end of the first oil conveying channel is communicated outwards from the end part of the transmission shaft, an oil inlet is formed in the box body, and the oil inlet is communicated with the first oil conveying channel. Lubrication enters the first oil delivery channel through the oil inlet.

To sum up, the beneficial effects of the utility model reside in that: this structure can be lubricated to the overhead gear in the gearbox, avoids gear wear to ensure that the gearbox normally works. The arranged oil baffle platform can prevent the ineffective loss of lubricating oil, and the gear ring locks the flowing direction of the lubricating oil by adding the directional lubricating oil holes, so that the lubricating effect of the whole machine is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a transmission;

FIG. 2 is a schematic view of a portion of the area A in FIG. 1;

FIG. 3 is a cross-sectional structural view of the ring gear;

FIG. 4 is a partially enlarged structural view of a portion of the area B in FIG. 3;

fig. 5 is a schematic axial side structure diagram of the ring gear.

In the figure: the oil pump comprises a box body 1, a transmission shaft 2, a sun gear 3, a planet gear 4, a gear ring 5, a clutch 6, a planet carrier 7, a first oil conveying channel 8, an oil baffle table 9, teeth 10, an extension wall 11, a second oil conveying channel 12, a planet gear shaft 13, a first oil conveying hole 14, a second oil conveying hole 15, a third oil conveying hole 16, a fourth oil conveying hole 17, a fifth oil conveying hole 18, a sixth oil conveying hole 19, a seventh oil conveying hole 20 and an oil inlet 21.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

The utility model provides a gearbox lubricating structure, the power distribution box comprises a box body 1, the transmission shaft 2 is installed in the rotation of box 1, fixed mounting has sun gear 3 on the transmission shaft 2, the rotation is installed a plurality of planet wheels 4 with the 3 meshing of sun gear in the box 1, a plurality of planet wheels 4 encircle sun gear 3 and arrange, the ring gear 5 is installed in the rotation of box 1, ring gear 5 encircles in a plurality of planet wheels 4 outsides and meshes with planet wheel 4, be equipped with first oil delivery passageway 8 in the transmission shaft 2, the lateral part of transmission shaft 2 is equipped with the first oil delivery hole 14 of the first oil delivery passageway 8 of intercommunication, be equipped with the second oil delivery hole 15 of the first oil delivery hole 14 of intercommunication on the sun gear 3, be equipped with the fourth oil delivery hole 17 of intercommunication second oil delivery hole 15 on planet wheel 4. Referring to the attached drawing 1, lubricating oil firstly enters a first oil conveying channel 8, then enters the planet wheel 4 through a first oil conveying hole 14, and then sequentially lubricates the planet wheel 4 and the gear ring 5 under the action of centrifugal force.

Referring to fig. 1 and 2, regarding the mounting structure of the planet wheel 4, the planet carrier 7 is rotatably mounted in the case 1, the planet carrier 7 is provided with a planet wheel shaft 13, and the planet wheel 4 is rotatably mounted on the planet wheel shaft 13. The planet wheel shaft 13 is internally provided with a second oil delivery channel 12, the side wall of the planet wheel shaft 13 is provided with a third oil delivery hole 16, the third oil delivery hole 16 penetrates through the planet wheel shaft 13 and is communicated with the second oil delivery channel 12, and the third oil delivery hole 16 is also communicated with a fourth oil delivery hole 17. The lubricating oil flows out of the second oil delivery hole 15 and then enters the second oil delivery passage 12 through the third oil delivery hole 16 by the centrifugal force.

Referring to fig. 1, a clutch 6 is installed in a box body 1, a gear ring 5 is connected with a driven disc of the clutch 6, and teeth 10 which are meshed with each other are arranged on an outer ring of the gear ring 5 and the driven disc. After the driving disk of the clutch 6 is contacted with the driven disk, the position of the gear ring 5 is fixed, and the planet wheel 4 does not idle, so that the power is output normally. The side of the gear ring 5 is provided with an extension wall 11, the extension wall 11 is in the shape of a ring, and the teeth 10 extend to the extension wall 11. The extension wall 11 increases the length of the teeth 10 and ensures a more reliable engagement of the ring gear 5 with the driven disc. The extension wall 11 is provided with a sixth oil transmission hole 19, the gear ring 5 is provided with a seventh oil transmission hole 20, the sixth oil transmission hole 19 and the seventh oil transmission hole 20 respectively penetrate through the extension wall 11 and the gear ring 5, and the sixth oil transmission hole 19 and the seventh oil transmission hole 20 are communicated with the fourth oil transmission hole 17. The lubricating oil can lubricate the teeth 10 between the ring gear 5 and the driven plate through the sixth oil feed hole 19 and the seventh oil feed hole 20. The inner wall of the extension wall 11 is provided with a fifth oil delivery hole 18, the fifth oil delivery hole 18 extends obliquely to the outer wall of the ring gear 5, and the outer end of the fifth oil delivery hole 18 is located at the middle of a sixth oil delivery hole 19 and a seventh oil delivery hole 20. Through the fifth oil feed hole 18, the teeth 10 between the ring gear 5 and the driven plate can be ensured to have no lubrication dead angle.

Referring to fig. 3 and 4, the inner wall of the extension wall 11 is provided with an oil baffle platform 9, the oil baffle platform 9 is annular, the oil baffle platform 9 is positioned at one end far away from the gear ring 5, and the oil baffle platform 9 protrudes inwards. The oil baffle table 9 can prevent the ineffective loss of lubricating oil, and the gear ring 5 locks the flowing direction of the lubricating oil by increasing directional lubricating oil holes, so that the lubricating effect of the whole machine is improved. One end of the first oil conveying channel 8 is communicated outwards from the end part of the transmission shaft 2, an oil inlet 21 is arranged on the box body 1, and the oil inlet 21 is communicated with the first oil conveying channel 8. Lubrication enters the first oil delivery passage 8 through the oil inlet 21.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a gearbox lubricating structure, the power distribution box comprises a box body (1), a serial communication port, transmission shaft (2) are installed in the rotation in box (1), fixed mounting has sun gear (3) on transmission shaft (2), a plurality of planet wheel (4) with sun gear (3) meshing are installed in the rotation in box (1), a plurality of planet wheel (4) are encircleed sun gear (3) and are arranged, ring gear (5) are installed in the rotation in box (1), ring gear (5) encircle in a plurality of planet wheel (4) the outside and with planet wheel (4) meshing, be equipped with first oil delivery passageway (8) in transmission shaft (2), the lateral part of transmission shaft (2) is equipped with first oil delivery hole (14) of first oil delivery passageway (8) of intercommunication, be equipped with second oil delivery hole (15) of first oil delivery hole (14) of intercommunication on sun gear (3), be equipped with fourth oil delivery hole (17) of intercommunication second oil delivery hole (15) on planet wheel (4).

2. A gearbox lubrication structure as defined in claim 1, characterised in that a planet carrier (7) is rotatably mounted in the housing (1), that a planet wheel axle (13) is arranged on the planet carrier (7), and that the planet wheels (4) are rotatably mounted on the planet wheel axle (13).

3. A lubrication arrangement for a gearbox according to claim 2, characterised in that a second oil feed channel (12) is provided in the planet wheel axle (13), that a third oil feed hole (16) is provided in the side wall of the planet wheel axle (13), that the third oil feed hole (16) extends through the planet wheel axle (13) and communicates with the second oil feed channel (12), and that the third oil feed hole (16) also communicates with a fourth oil feed hole (17).

4. A lubrication arrangement for a gearbox according to claim 1, characterised in that the clutch (6) is mounted in the housing (1), that the ring gear (5) is connected to the driven plate of the clutch (6), and that the outer ring of the ring gear (5) and the driven plate are provided with mutually engaging teeth (10).

5. Gearbox lubrication structure as claimed in claim 4, characterised in that the side of said ring gear (5) is provided with an extension wall (11), the extension wall (11) being annular in shape, the teeth (10) extending onto the extension wall (11).

6. The lubrication structure of the gearbox according to claim 5, wherein a sixth oil transfer hole (19) is formed in the extension wall (11), a seventh oil transfer hole (20) is formed in the gear ring (5), the sixth oil transfer hole (19) and the seventh oil transfer hole (20) respectively penetrate through the extension wall (11) and the gear ring (5), and the sixth oil transfer hole (19) and the seventh oil transfer hole (20) are both communicated with the fourth oil transfer hole (17).

7. The lubrication structure of a transmission according to claim 6, wherein a fifth oil feed hole (18) is formed in an inner wall of the extension wall (11), the fifth oil feed hole (18) extends obliquely to an outer wall portion of the ring gear (5), and an outer end of the fifth oil feed hole (18) is located at a middle portion between the sixth oil feed hole (19) and the seventh oil feed hole (20).

8. The gearbox lubrication structure according to claim 7, characterised in that the inner wall of the extension wall (11) is provided with an oil baffle table (9), the oil baffle table (9) has a ring shape, the oil baffle table (9) is located at the end away from the ring gear (5), and the oil baffle table (9) protrudes inward.

9. The lubrication structure of a transmission according to claim 1, wherein one end of the first oil delivery passage (8) communicates outwardly from the end of the drive shaft (2), and the case (1) is provided with an oil inlet (21), the oil inlet (21) communicating with the first oil delivery passage (8).