CN112161040A

CN112161040A - Lubricating system of transmission, transmission and vehicle

Info

Publication number: CN112161040A
Application number: CN202010917046.5A
Authority: CN
Inventors: 蓝强; 杨晓琴; 高尤坤; 谭福慧; 庞晓宇
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-01-01
Anticipated expiration: 2040-09-03
Also published as: CN112161040B

Abstract

The application relates to the technical field of transmissions, in particular to a lubricating system of a transmission, the transmission comprising the lubricating system and a vehicle. The lubricating system of derailleur includes the disc with the coaxial setting of gear, the disc includes the body and sets up along circumference oil storage tank on the body, the oil storage tank orientation the one end at disc center is formed with the opening, keeps away from the one end in shaft hole is connected with gets rid of oil pipe, get rid of oil pipe's mouth of pipe orientation the surface of gear. Embodiments of the present invention provide a transmission including a lubrication system. A vehicle provided by an embodiment of the invention includes a transmission. In the lubricating system of the transmission, an oil storage tank of an oil throwing disc rotates to oil and then oil is filled, the oil is thrown out through an oil throwing pipe by the aid of rotating centrifugal force and drips on the surface of a gear, lubrication of the gear is achieved, the gear is forcibly lubricated without adding a pump, material cost and process cost are reduced, and the transmission is simple in structure and convenient to assemble.

Description

Lubricating system of transmission, transmission and vehicle

Technical Field

The application relates to the technical field of transmissions, in particular to a lubricating system of a transmission, the transmission comprising the lubricating system and a vehicle comprising the transmission.

Background

When the gears in the transmission transmit power, the gears must be lubricated to ensure high transmission efficiency, low noise and long service life of the transmission, otherwise the gears are easy to damage. At present, the transmission lubrication has two modes of splash lubrication and forced lubrication, and the splash lubrication is that oil is thrown up through the rotation of the gear, so that the oil splashes to the surface of the gear for lubrication, but the splash lubrication effect cannot meet the requirement under the high-speed condition, so the forced lubrication is needed.

The transmission is a key part of a new energy automobile, the noise, the performance and the like of the transmission, a good lubricating system influences the efficiency and the reliability of the whole automobile, and most enterprises in China increase oil pumps for forced lubrication to improve the lubricating effect. The scheme needs to add an oil pump, and the oil is sucked by the oil pump and then is transmitted to the surface of the gear and the meshing part of the gear through a plurality of oil pipes to lubricate the gear. This undoubtedly increases the cost and reduces the useful efficiency of the transmission. Through research and discovery, the common forced lubrication of the transmission on the market is realized by adding an oil pump, so that the cost of the transmission is improved, and the efficiency is reduced.

Disclosure of Invention

The technical problem to be solved by the embodiment of the invention is as follows: the existing transmission lubrication mode is forced lubrication by adding an oil pump, so that the cost of the transmission is increased.

In order to achieve the above object, according to a first aspect of the present invention, an embodiment of the present invention provides a lubrication system of a transmission.

The lubricating system of the transmission comprises an oil thrower arranged coaxially with a gear, wherein the oil thrower comprises a body and an oil storage tank arranged on the body along the circumferential direction, an opening is formed at one end of the oil storage tank facing to the center of the body, an oil thrower pipe is connected at one end of the oil storage tank far away from the center of the body, and a pipe orifice of the oil thrower pipe faces to the surface of the gear.

Further, the distance between the coaxially arranged oil thrower disc and the gear is adjustable.

Furthermore, the lubricating system further comprises an oil guide groove arranged right above the meshing connection part of the two gears, a first through hole which is communicated up and down is formed in the oil guide groove, and the orifice of the oil throwing pipe can be opposite to the oil guide groove in the rotating process of the oil throwing disc.

Further, along the extending direction of the oil guide groove, the height of the groove bottom of the oil guide groove is gradually reduced.

Further, lead the oil groove and include interconnect's first section and second section, form first contained angle between the tank bottom portion of first section and the horizontal plane, form the second contained angle between the tank bottom portion of second section and the horizontal plane, first contained angle is greater than the second contained angle.

Further, the oil guide groove is fixed on a shifting fork of the transmission.

Furthermore, a groove is formed in the surface of the shifting fork shaft of the transmission, and a second through hole penetrating through the shifting fork shaft is formed in the bottom of the groove.

Further, the depth of the groove facing the transmission shift portion is larger than the depth of the other portions of the groove.

Further, an oil storage cavity is arranged inside the gear and is communicated with the tooth root part of the gear through a third through hole extending in the radial direction.

In order to achieve the above object, according to a second aspect of the present invention, an embodiment of the present invention provides a transmission.

A transmission according to a second aspect of an embodiment of the present invention includes the lubrication system provided by the first aspect of an embodiment of the present invention.

In order to achieve the above object, according to a third aspect of the present invention, an embodiment provides a vehicle.

According to a third aspect of the embodiment of the invention, there is provided a vehicle including the transmission according to the second aspect of the embodiment of the invention.

In the lubricating system of the transmission provided by the technical scheme, the oil storage tank of the oil throwing disc rotates to the oil liquid and then is filled with the oil liquid, the oil liquid is thrown out through the oil throwing pipe by the rotating centrifugal force and drips on the surface of the gear, the lubrication of the gear is realized, the gear is forcibly lubricated without adding a pump, the material cost and the process cost are reduced, and the lubricating system is simple in structure and convenient to assemble.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic illustration of a lubrication system for a transmission according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the oil slinger of the lubrication system provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an oil guide groove in the lubrication system according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a fork shaft in the lubrication system according to an embodiment of the present invention; and

fig. 5 is a schematic structural diagram and a partial structural sectional view of a gear in the lubrication system according to the embodiment of the present invention.

In the figure:

1. a gear; 101. an oil storage chamber; 102. a third through hole; 2. an oil slinger; 201. a body; 202. an oil storage tank; 203. an opening; 204. throwing the oil pipe; 205. a shaft hole; 3. a rotating shaft; 4. an oil guide groove; 401. a first through hole; 402. a first stage; 403. a second stage; 5. a shifting fork; 6. a fork shaft; 601. a groove; 602. a second via.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings are intended to cover non-exclusive inclusions, such that a system, product or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

In this application, the terms "upper", "lower", "inner", "middle", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The lubricating system provided by the embodiment of the invention is applied to a transmission, as shown in the figure, the transmission comprises a rotating shaft 3, a plurality of gears 1 arranged on the rotating shaft 3, a shifting fork shaft 6, a shifting fork 5 and other structures, and the lubricating system provided by the embodiment of the invention is arranged in the transmission with the structure.

As shown in fig. 1 and 2, the lubrication system of the transmission includes an oil thrower 2, the oil thrower 2 is provided with a shaft hole 205, and the oil thrower 2 is in interference fit with the rotating shaft 3 through the shaft hole 205, so as to realize the coaxial arrangement of the oil thrower 2 and the gear 1. The oil slinger 2 comprises a body 201 and an oil storage groove 202 arranged on the body 201 along the circumferential direction, wherein the oil storage groove 202 faces towards one end of the center of the body 201, an opening 203 is formed at one end far away from the center of the body 201, an oil slinger pipe 204 is connected with one end of the oil slinger pipe 204, one end of the oil slinger pipe 204 is communicated with the oil storage groove 202, and a pipe orifice formed at the other end of the oil slinger pipe 204 faces towards the surface of the gear 1.

In the rotation process of disc 2, after oil storage tank 202 is rotatory to the liquid level below the fluid, fluid can enter into oil storage tank 202 through opening 203 in, along with disc 2's high-speed rotation, the centrifugal force of production throws away the fluid in oil storage tank 202 and drips the surface of gear 1 through getting rid of oil pipe 204, realizes gear 1's lubrication, it need not to increase the pump and carries out force-feed lubrication to gear 1 promptly, material cost and processing cost have been reduced, and simple structure convenient assembling.

In the above embodiment, preferably, as shown in fig. 1 and 2, the body 201 is disc-shaped, the oil sumps 202 are all disposed on one side of the body 201 facing the gear 1, the oil slinger 204 first extends in a direction radially away from the center of the body 201 for generating a movement speed of the oil in the oil slinger 204 by a centrifugal force generated by rotation, and then the oil slinger 204 bends toward the gear 1 to guide the oil slinging direction.

The diameter of oil slinger 204 and the rotational speed of oil slinger 2 have an effect on the amount, path and landing point of oil droplets thrown from oil slinger 204, and therefore the various parameters mentioned above can be designed according to specific needs. In general, when the rotation speed of the oil thrower 2 is relatively high, the centrifugal force generated is relatively high, and the amount of thrown oil is relatively high, so that the inner diameter of the oil thrower pipe 204 can be designed to be small, and a high rotation speed can be satisfied at about 1 mm. In addition, the distance between the oil thrower disc 2 and the gear 1 which are coaxially arranged can be designed into an adjustable mode, and the thrown oil just drops to the surface of the gear 1 by adjusting the distance between the oil thrower disc 2 and the gear 1, so that the oil thrower is suitable for different use scenes and requirements of the transmission.

In some embodiments, as shown in fig. 1 and 3, the lubrication system further comprises an oil guide groove 4. The oil guide groove 4 is arranged right above the meshing connection part of the two gears 1, a first through hole 401 which is through up and down is formed in the oil guide groove 4, and in the rotating process of the oil slinger 2, the pipe orifice of the oil slinger 204 can be just opposite to the oil guide groove 4. Get rid of the mouth of pipe of oil pipe 204 and lead oil groove 4 and have the just in time relative condition in the rotatory in-process of disc 2, when getting rid of oil pipe 204 and get rid of oil, partly oil drips just can drip and lead in oil groove 4, the oil that splashes the stirring simultaneously through gear 1 rotation also can splash into leading in oil groove 4, collect and lead the position that oil in the oil groove 4 can instil into gear 1 meshing through first through-hole 401, form lubricated gear 1, the life-span of gear 1 use is improved.

In the above embodiment, the height of the groove bottom of the oil guide groove 4 gradually decreases along the extending direction of the oil guide groove 4. Because the oil drops self gravity and the influence of the inclination of the tank bottom of the oil guide tank 4, the oil drops flow from a high position to a low position, the distribution area of the oil drops in the extending direction of the oil guide tank 4 is increased, and the collection of oil in the oil guide tank 4 is facilitated.

Preferably, lead oil groove 4 and fix on shift fork 5 of derailleur, make full use of current structure in the derailleur, realize leading oil groove 4's fixed.

Preferably, as shown in fig. 3, the oil guiding groove 4 comprises a first section 402 and a second section 403 which are connected with each other, a first included angle is formed between the groove bottom of the first section 402 and the horizontal plane, a second included angle is formed between the groove bottom of the second section 403 and the horizontal plane, and the first included angle is larger than the second included angle. The inclination of first section 402 is great in the oil slinger 2 rotates the in-process, the mouth of pipe of getting rid of oil pipe 204 can just be right lead first section 402 of oil groove 4, and first section 402 is used for through the quick oil droplet water conservancy diversion that will fall into in first section 402 of its great inclination to second section 403 in, and the inclination of second section 403 is relatively gentle and first through-hole 401 is seted up on the second section 403 for the oil droplet slows down at the flow velocity in second section 403, realizes great distribution in second section 403, prevents that the oil droplet from at the terminal of leading oil groove 4 in the too fast flow of second section 403, leads to the oil droplet to pile up. Most preferably, the first included angle is 45 ° and the second included angle is 10 °.

In some embodiments, as shown in fig. 1 and 4, the lubrication system further includes a groove 601 formed in a surface of the shift fork shaft 6 of the transmission, and a second through hole 602 formed through the shift fork shaft 6 is formed in a bottom of the groove 601. The direction of the second through hole 602 is preferably along the radial direction of the fork shaft 6. In the use process, the notch of the groove 601 is arranged upwards, and in the working process, when oil splashed by the gear 1 falls into the groove 601 of the shifting fork shaft 6, the oil is collected and then drops to the surface of the gear 1 through the second through hole 602, so that the gear 1 is lubricated. Meanwhile, after the shifting fork shaft 6 is cut into the groove 601, the contact area of the shifting fork shaft 6 and the transmission shell can be reduced, friction is reduced, and the gear shifting force can be properly reduced. Preferably, the depth of the groove 601 facing the gear shifting portion of the transmission is larger than the depth of other portions of the groove 601, so that more oil drops can be collected and dropped on the gear shifting portion to fully lubricate the gear shifting portion.

In some embodiments, as shown in fig. 1 and 5, the lubrication system further comprises an oil reservoir 101 provided inside the gear 1, the oil reservoir 101 communicating with the root portion of the gear 1 through a third through hole 102 extending radially. An oil inlet (not shown in the figure) which is communicated with the oil storage cavity 101 and feeds oil into the oil storage cavity 101 is formed in the side surface of the gear 1. In the rotation process of the gear 1, after an oil inlet of the oil storage cavity 101 rotates to a position below the liquid level of oil, the oil can enter the oil storage cavity 101 through the oil inlet, and along with the high-speed rotation of the gear 1, the generated centrifugal force throws the oil in the oil storage cavity 101 out to the surface of the gear 1 through the third through hole 102, so that lubrication is formed on the surface of the gear 1. In order to avoid the opening of the oil reservoir 101 affecting the balance of the gear 1, the oil reservoir 101 is preferably arranged symmetrically on the gear 1, and the cross-sectional shape of each gear 1 cavity is preferably designed in an axially symmetric manner.

The lubricating system for the transmission provided by the embodiment of the invention does not need to add a pump to perform forced lubrication on the gear, and can reduce the material cost and the process cost by about 3-4%; the surfaces of the gears and the gear meshing parts of the gears are lubricated through a plurality of structures such as an oil thrower, an oil guide groove, a shifting fork shaft and an oil storage cavity in the gears, so that the lubricating effect is effectively improved; the structure is convenient to assemble, and the process cost is effectively reduced by about 1.5%; the reliability of the product is improved, and the problems of tooth surface gluing and pitting of the transmission caused by insufficient lubrication effect are solved.

The embodiment of the invention also provides a transmission, which comprises the lubricating system provided by the embodiment of the invention. The transmission disclosed in the embodiment of the present application includes the lubrication system provided in the above embodiment, so that the transmission having the lubrication system also has all the technical effects described above, and details are not repeated herein. Other configurations and operations of the transmission will be apparent to those skilled in the art and will not be described in detail herein.

The embodiment of the invention also provides a vehicle which comprises the transmission provided by the embodiment of the invention. The vehicle disclosed in the embodiment of the present application includes the transmission provided in the above embodiment, and therefore the vehicle having the transmission also has all the technical effects described above, and details are not repeated here. Other configurations and operations of the vehicle will be known to those of ordinary skill in the art and will not be described in detail herein.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The lubricating system of the transmission is characterized by comprising an oil slinger (2) which is coaxial with a gear (1), wherein the oil slinger (2) comprises a body (201) and an oil storage tank (202) which is arranged on the body (201) along the circumferential direction, an opening (203) is formed in one end, facing the center of the body (201), of the oil storage tank (202), an oil slinger pipe (204) is connected to one end, far away from the center of the body (201), of the oil slinger pipe (204), and a pipe orifice of the oil slinger pipe (204) faces the surface of the gear (1).

2. Lubrication system according to claim 1, characterised in that the distance between the coaxially arranged oil slinger (2) and the gear wheel (1) is adjustable.

3. The lubrication system according to claim 1, further comprising an oil guide groove (4) disposed right above the meshing connection portion of the two gears (1), wherein the oil guide groove (4) is provided with a first through hole (401) which is vertically through, and a nozzle of the oil slinger pipe (204) can be directly opposite to the oil guide groove (4) in the rotation process of the oil slinger (2).

4. Lubrication system according to claim 3, characterised in that the height of the groove bottom of the oil guide groove (4) decreases gradually along the extension of the oil guide groove (4).

5. Lubrication system according to claim 4, the oil-guiding groove (4) comprising a first section (402) and a second section (403) connected to each other, the groove bottom of the first section (402) forming a first angle with the horizontal plane and the groove bottom of the second section (403) forming a second angle with the horizontal plane, the first angle being larger than the second angle.

6. Lubrication system according to claim 3, characterised in that the oil-guiding groove (4) is fixed on the transmission fork (5).

7. The lubrication system according to claim 1, characterized in that a surface of the derailleur fork shaft (6) is provided with a groove (601), and a bottom of the groove (601) is provided with a second through hole (602) penetrating through the derailleur fork shaft (6).

8. The lubrication system according to claim 7, wherein the depth of the groove (601) facing the transmission shift portion is greater than the depth of the other portions of the groove (601).

9. Lubrication system according to claim 7, characterised in that the gear wheel (1) is provided with an oil reservoir (101) inside, which oil reservoir (101) communicates with the root portion of the gear wheel (1) through a third through hole (102) extending radially.

10. A transmission characterized by comprising a lubrication system according to any one of claims 1-9.

11. A vehicle comprising the transmission of claim 10.