CN209856358U - Bearing lubricating mechanism of transmission and transmission - Google Patents

Abstract

The utility model discloses a bearing lubrication mechanism and derailleur of derailleur. Wherein, the lubricated mechanism of derailleur includes: the transmission comprises a transmission shell, an input shaft bearing, a differential gear, an input shaft gear, an oil collecting tank and an oil stirring wheel. The oil collecting groove can provide a small amount of additional oil storage space above the oil level line of the oil storage space, and the partial periphery of the oil stirring wheel extends into the oil collecting groove, so that the lubricating oil in the oil collecting groove can be stirred to carry out splash lubrication on the input shaft bearing. Since the rotation of the oil agitating vessel is directly associated with the input shaft without depending on the differential gear, even if the splash lubrication based on the differential gear fails due to long-term parking or idling of the vehicle, the oil agitating vessel can perform the splash lubrication on the input shaft bearing with the lubricating oil in the oil sump in response to the rotation of the input shaft, so that the lubrication effect of the transmission during the failure period of the splash lubrication based on the differential gear can be improved to reduce the probability of the failure of the input shaft bearing.

Description

Transmission bearing lubricating mechanism and transmission

technical field

The utility model relates to a bearing lubricating technology of a transmission, in particular to a bearing lubricating mechanism of a transmission and a transmission comprising the bearing lubricating mechanism.

Background technique

Lubricating oil is stored in the transmission housing. Due to the space layout requirements of the vehicle, the input shaft bearing of the transmission is designed to be located above the oil level line of the lubricating oil, so its lubrication can only rely on the differential gear to stir the lubricating oil splash during operation, that is, based on the differential Splash lubrication of transmission gears.

However, after the vehicle is parked or idling for a long time, the stall of the differential gear will lead to the failure of the splash lubrication, so that the lubricating oil attached to the input shaft bearing is scarce, thus, the splash lubrication based on the differential gear is ineffective. (Including the low-speed state where the differential gear stalls or the speed is not enough to stir the lubricating oil splash), it is easy to increase the probability of failure of the input shaft bearing due to insufficient lubrication.

Based on the above requirements, how to make the transmission lubricated in time during the period when the splash lubrication based on the differential gear fails has become a technical problem to be solved in the prior art.

Utility model content

An embodiment of the utility model provides a bearing lubricating mechanism of a transmission, which can improve the lubrication effect of the transmission during the failure period based on the splash lubrication of the differential gear.

In the foregoing embodiments of the present utility model, the bearing lubricating mechanism of the transmission includes:

A transmission housing, the transmission housing has a cavity, and the bottom of the cavity has an oil storage space for accommodating lubricating oil;

an input shaft bearing, the input shaft bearing is arranged in the cavity, the input shaft bearing carries an input shaft, and the input shaft bearing is located above the oil level line of the oil storage space;

a differential gear, the differential gear is in transmission connection with the input shaft in the cavity, and the lower boundary of the differential gear falls below the oil level line of the oil storage space;

an input shaft gear, the input shaft gear is mounted on the input shaft in the cavity;

an oil collecting tank, the oil collecting tank is arranged in the cavity above the oil level line of the oil storage space;

An oil stirring wheel, the oil stirring wheel is in transmission connection with the input shaft in the cavity, a part of the periphery of the oil stirring wheel extends into the oil collecting tank, and the oil stirring wheel is adjacent to the bearing of the input shaft.

Optionally, the differential gear is close to one end of the cavity, the oil churning wheel is close to the other end of the cavity, and the input shaft gear is located between the differential gear and the churning wheel , and the lower boundary of the input shaft gear is suspended above the oil level line of the oil storage space.

Optionally, the bottom surface of the cavity slopes downward from the end where the oil churn is located to the end where the differential gear is located.

Optionally, the oil sump extends along an arc shape matching a part of the outer circumference of the oil churning vessel.

Optionally, the bearing lubrication mechanism further includes:

An oil baffle, the oil baffle is arranged in the lubricating oil splash range in the cavity, and the oil baffle extends from the splash range to the oil sump.

Optionally, the oil collecting tank is arranged under the side of the oil stirring wheel away from the input shaft gear, and the oil baffle is arranged on the side of the input shaft gear adjacent to the oil stirring wheel. Stir the top of the tanker.

Optionally, the oil baffle is bent and extends from the top of the input shaft gear to the side of the oil sump away from the input shaft gear.

Optionally, the oil churning wheel includes a transmission gear and a paddle wheel, wherein the transmission gear is meshed with the input shaft gear for transmission, the paddle wheel is coaxially transmitted with the transmission gear, and the paddle A wheel is adjacent to the input shaft bearing.

Optionally, the transmission housing is further provided with a lubricating oil filling port, and the lubricating oil filling port is arranged above the oil sump.

Another embodiment of the present invention provides a transmission, including the above-mentioned bearing lubricating mechanism.

It can be seen from the above that the oil sump can provide a small amount of additional oil storage space above the oil level line of the oil storage space, and the part of the outer periphery of the oil churning wheel adjacent to the input shaft bearing extends into the oil storage space. In the oil sump, and thus can stir the lubricating oil in the oil sump to implement splash lubrication to the input shaft bearing. Since the rotation of the oil stirrer is directly related to the input shaft and does not depend on the differential gear, even if the splash lubrication based on the differential gear fails due to the vehicle being parked or idling for a long time, the The stirrer may also splash lubricate the input shaft bearings with the lubricating oil in the sump in response to the rotation of the input shaft, thereby improving the lubrication of the transmission during failure periods of differential gear based splash lubrication effect to reduce the probability of input shaft bearing failure.

Description of drawings

The following drawings only illustrate and explain the application schematically, and do not limit the scope of the application.

Fig. 1 is a structural schematic diagram of a transmission lubricating mechanism in one embodiment.

Label description

100 transmission case

110 differential gear

120 Input shaft gear

130 oil sump

140 Churner

141 Transmission gear

142 paddle wheel

150 Oil baffle

160 Grease filling port

170 Oil level line

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation of the utility model is now described with reference to the accompanying drawings, and the same symbols in each figure represent the same parts.

In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions.

In order to make the drawings concise, the figures in each figure only schematically show the relevant parts of the utility model, and do not represent its actual structure as a product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked.

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings and examples.

Referring to FIG. 1 , in one embodiment, a bearing lubricating mechanism of a transmission includes: a transmission housing 100 , an input shaft bearing, a differential gear 110 , an input shaft gear 120 , an oil sump 130 , and an oil stirring wheel 140 .

Wherein, the transmission housing 100 has a cavity, and the bottom of the cavity has an oil storage space for containing lubricating oil; the differential gear 110 is connected to the input shaft in transmission in the cavity, and the lower boundary of the differential gear falls into the oil storage space. Below the oil level line 170 in the space; the input shaft gear 120 is installed on the input shaft in the cavity; the oil collecting tank 130 is arranged in the cavity above the oil level line in the oil storage space; the oil stirring wheel 140 is connected with the input shaft in the cavity, A part of the outer periphery of the oil stirrer 140 protrudes into the oil sump 130, and the oil stirrer 140 is adjacent to the input shaft bearing.

In addition, the above-mentioned input shaft bearing and input shaft are not shown in FIG. 1 because they are covered by the differential gear 110 and the input shaft gear 120 . The input shaft bearing is arranged in the cavity, the input shaft bearing carries the input shaft, and the input shaft bearing is located above the oil level line 170 of the oil storage space. The transmission of the input shaft and the differential gear 110 can be transmitted by using a synchronizer and an output shaft connection in the prior art.

Considering the layout of the whole vehicle and the layout space of the transmission transmission mechanism, the differential gear 110 can be close to one end of the cavity, the oil stirrer 140 can be close to the other end of the cavity, and the input shaft gear 120 can be located between the differential gear 110 and the oil stirrer. 140, and the lower boundary of the input shaft gear 120 hangs above the oil level line 170 of the oil storage space.

In order to make the lubricating oil gather more on one side of the differential gear 110 so as to exert the maximum splashing effect, the bottom surface of the cavity can go downward from the end where the oil stirrer 140 is located to the end where the differential gear 110 is located. Inclined, while saving the overall layout space of the transmission, it can also reduce the amount of transmission lubricating oil and reduce oil churning loss.

In order to make the oil stirrer 140 more efficiently stir a small amount of lubricating oil stored in the oil sump 130 ("a small amount" is relative to the amount of oil in the oil storage space in the transmission housing 100), the oil sump 130 can be set to match the amount of oil in the oil sump 130. The arc shape of part of the outer periphery of 140 extends along, so that part of the outer periphery of the oil stirring wheel 140 falls into the oil collecting groove 130, so as to achieve the lubricating effect of the oil stirring wheel 140 on the transmission input shaft bearing.

Certainly, in order to improve the effect of splash lubrication and improve the oil storage efficiency in the oil collecting tank 130 , the bearing lubricating mechanism in this embodiment may further include an oil baffle 150 .

It can be seen from FIG. 1 that the oil baffle 150 is arranged in the lubricating oil splash range in the cavity, and the oil baffle 150 extends from the splash range to the oil sump 130 . Specifically, the oil sump 130 is disposed below the side of the oil stirring wheel 140 away from the input shaft gear 120 , and the oil baffle plate 150 is disposed above the oil stirring wheel 140 on the side of the input shaft gear 120 adjacent to the oil stirring wheel 140 . For example, the oil baffle plate 150 bends and extends from the top of the input shaft gear 120 to the side of the oil sump 130 away from the input shaft gear 120 .

Through the setting of the oil baffle 150, in the state where the differential gear 110 splashes and lubricates the input shaft gear 120, the oil baffle 150 can also collect the lubricating oil splashed by the differential gear 110, so that the oil collecting groove 130 is full. Lubricating oil can even be in a flooded state of lubricating oil. Therefore, when the speed of the differential gear 110 is very slow or stalled, as long as the input shaft gear 120 rotates, the lubricating oil collected in the oil sump 130 can be stirred and splashed by the oil stirrer 140 .

In order to improve the splash lubrication efficiency of the oil stirring wheel 140, the oil stirring wheel 140 may include a transmission gear 141 and a paddle wheel 142, wherein the transmission gear 141 is meshed with the input shaft gear 120 for transmission, and the paddle wheel 142 is coaxially driven with the transmission gear 141, and Paddle wheel 142 is adjacent to the input shaft bearing. Since the paddle wheel 142 is adjacent to the bearing of the input shaft, the splash lubrication of the oil churning wheel 140 can achieve a better lubricating effect even if the intensity is low. In actual design, since the input shaft gear 120 and the input shaft bearing have a positional deviation in the axial direction of the input shaft, the transmission gear 141 and paddle wheel 142 of the churning wheel 140 can also be designed to be stacked in the axial direction. to match the positional deviation.

Considering the oil filling requirements of lubricating oil and the oil storage efficiency of the oil sump 130, the transmission housing 100 is further provided with a lubricating oil filling port 160, and the lubricating oil filling port 160 can be arranged above the oil sump 130, through which the oil filling port 160 Azimuth setting, so as to ensure that when the automobile is added to the transmission lubricating oil at the factory or when the transmission lubricating oil is overhauled and replaced, when the transmission lubricating oil is added through the lubricating oil filling port 160, it can first pass through the oil collection tank 130 and then reach the oil storage space in the transmission housing 100 , so as to ensure that the oil sump 130 is always kept full of oil.

The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present utility model, and are not used to limit the protection scope of the present utility model. Embodiments or changes, such as combination, division or repetition of features, should be included in the protection scope of the present utility model.

Claims (10)

1. A bearing lubrication mechanism for a transmission, comprising:

the transmission comprises a transmission shell, a transmission cover and a transmission cover, wherein the transmission shell is provided with a cavity, and the bottom of the cavity is provided with an oil storage space for containing lubricating oil;

the input shaft bearing is arranged in the cavity, carries an input shaft and is positioned above an oil level line of the oil storage space;

a differential gear drivingly connected with the input shaft within the cavity and having a lower boundary that falls below an oil level line in the oil storage space;

an input shaft gear mounted to the input shaft within the cavity;

an oil sump disposed within the cavity above an oil level line of the oil storage space;

the oil stirring wheel is in transmission connection with the input shaft in the cavity, the partial periphery of the oil stirring wheel extends into the oil collecting groove, and the oil stirring wheel is adjacent to the input shaft bearing.

2. The bearing lubrication mechanism as claimed in claim 1, wherein said differential gear is located near one end of said cavity, said oil agitating vessel is located near the other end of said cavity, said input shaft gear is located between said differential gear and said oil agitating vessel, and a lower boundary of said input shaft gear is suspended above an oil level of said oil storage space.

3. The bearing lubrication mechanism according to claim 2, wherein a bottom surface of the cavity is inclined downward from the end where the oil agitating wheel is located toward the end where the differential gear is located.

4. The bearing lubrication mechanism according to claim 1, wherein said oil sump extends in a circular arc shape matching a partial outer periphery of said oil agitating vessel.

5. The bearing lubrication mechanism according to claim 1, further comprising:

the oil baffle is arranged in the cavity in a lubricating oil splashing range, and extends from the splashing range to the oil collecting tank.

6. The bearing lubrication mechanism according to claim 5, wherein said oil sump is disposed below a side of said oil agitating vessel remote from said input shaft gear, and said oil baffle is disposed above said oil agitating vessel on a side of said input shaft gear adjacent to said oil agitating vessel.

7. The bearing lubrication mechanism according to claim 6, wherein the oil baffle extends from the top of the input shaft gear to a side of the oil sump away from the input shaft gear.

8. The bearing lubrication mechanism according to claim 1, wherein said agitator wheel comprises a drive gear and a paddle wheel, wherein said drive gear is in geared drive with said input shaft gear, said paddle wheel is in coaxial drive with said drive gear, and said paddle wheel is adjacent to said input shaft bearing.

9. The bearing lubrication mechanism according to claim 8, wherein said transmission housing further defines a lubrication port, and said lubrication port is disposed above said sump.

10. A transmission characterized by comprising a bearing lubrication mechanism as claimed in any one of claims 1 to 9.