CN210397660U

CN210397660U - Bearing cooling and lubricating structure and transmission

Info

Publication number: CN210397660U
Application number: CN201920449414.0U
Authority: CN
Inventors: 缪银鸽; 刘学武; 周友; 段燕军; 杨溢; 李颂平
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-04-24
Anticipated expiration: 2029-04-03

Abstract

The utility model provides a bearing cooling and lubricating structure, includes the supporting body, and the supporting body is equipped with the oil inlet including the holding chamber, first ring channel and the second ring channel that bear the weight of the bearing, the one end of first ring channel, and the other end of first ring channel is equipped with the oil-out, and first ring channel is located the inner wall in holding chamber, and second ring channel is located the bottom in holding chamber, and the one end of second ring channel is connected with one side of first ring channel, and the other end of second ring channel is connected with the opposite side of first ring channel. The utility model discloses a bearing cooling and lubrication structure can realize cooling, lubricating the bearing all-round ground, solves the unable heat dissipation of part and the bad problem of local lubrication. The utility model discloses still relate to a derailleur.

Description

Bearing cooling and lubricating structure and transmission

Technical Field

The utility model relates to an auto-parts technical field especially relates to a bearing cooling and lubrication structure and derailleur.

Background

The bearings are generally cooled or lubricated by the oil guide grooves or the oil holes, but the cooling and lubricating coverage area of the oil guide grooves or the oil holes is limited, so that local heat cannot be taken away by cooling lubricating oil or the lubricating effect is poor.

The technical scheme of the prior transmission for cooling and lubricating the bearing is that a plurality of oil holes or oil ways are processed on a transmission shell, and the oil holes or the oil ways are sealed by adding a bearing cover at the rear end of the transmission shell, so that the coverage area of cooling and lubricating is limited, the problem of poor lubricating effect or insufficient cooling exists, the processing is complex, and the number of parts is increased.

The foregoing description is provided for general background information and is not admitted to be prior art.

Disclosure of Invention

An object of the utility model is to provide a bearing cooling and lubrication structure and derailleur can realize cooling, lubricating the bearing all-round ground, solve the unable heat dissipation of part and the bad problem of local lubrication.

The utility model provides a bearing cooling and lubricating structure, includes the supporting body, and the supporting body is equipped with the oil inlet including the holding chamber, first ring channel and the second ring channel that bear the weight of the bearing, the one end of first ring channel, and the other end of first ring channel is equipped with the oil-out, and first ring channel is located the inner wall in holding chamber, and second ring channel is located the bottom in holding chamber, and the one end of second ring channel is connected with one side of first ring channel, and the other end of second ring channel is connected with the opposite side of first ring channel.

Furthermore, the bearing cooling and lubricating structure further comprises a first oil pipe and a second oil pipe, the first oil pipe and the second oil pipe are located on the outer side of the bearing body, the first oil pipe is connected with the oil inlet, and the second oil pipe is connected with the oil outlet.

Further, the bearing cooling and lubricating structure further comprises a partition block, and the partition block is located between the oil inlet and the oil outlet.

Furthermore, the holding cavity is internally provided with a supporting step for supporting the bearing and an oil blocking rib, the supporting step is connected with the inner wall of the holding cavity, two ends of the oil blocking rib are respectively connected with the side wall of the supporting step, and the oil blocking rib and the supporting step are enclosed to form a second annular groove.

Furthermore, the bearing body still includes connection gap, and connection gap sets up on the inner wall in holding chamber and runs through the support step, and the second annular groove passes through connection gap and links to each other with first ring channel.

Further, the height of the oil blocking rib is smaller than that of the supporting step.

The utility model also provides a derailleur, including gearbox housing, the derailleur still includes foretell bearing cooling and lubrication structure, and bearing cooling and lubrication structure sets up on gearbox housing.

Further, the bearing cooling and lubricating structure is formed on the transmission housing through casting molding.

Furthermore, the transmission also comprises a bearing, the bearing is arranged in the accommodating cavity, the outer wall of the bearing and the first annular groove are combined to form a first oil duct, and the bottom of the bearing and the second annular groove are combined to form a second oil duct.

Further, the transmission further comprises a third oil passage, and the third oil passage is connected between the first oil passage and the second oil passage.

The bearing cooling and lubricating structure of the utility model and the bearing form a first oil duct, a second oil duct and a third oil duct, the first oil duct circumferentially surrounds the bearing, the second oil duct is positioned below the bearing, the three-dimensional and sealed full-coverage cooling and lubrication of the bearing can be realized, and the problems of local heat radiation failure and local poor lubrication are solved; when the bearing cooling and lubricating structure is applied to a transmission, the bearing cooling and lubricating structure is formed on a transmission shell in a casting forming mode, the process is simple, redundant parts are not added, the manufacturing cost is reduced, the first oil duct, the second oil duct and the third oil duct can be completed through machining from one side of the transmission shell, the oil blocking rib can be integrally cast and formed with the transmission shell, and the processing is convenient.

Drawings

Fig. 1 is a schematic structural diagram of a bearing cooling and lubricating structure according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of fig. 1 from another view angle.

Fig. 3 is a schematic cross-sectional structural diagram of a bearing disposed at a C-C position on a bearing cooling and lubricating structure according to an embodiment of the present invention.

Fig. 4 is a schematic sectional view at a-a in fig. 3.

Fig. 5 is a schematic flow diagram of the cooling lubricant flowing in the bearing cooling and lubricating structure according to an embodiment of the present invention.

Fig. 6 is another schematic flow diagram of the cooling lubricant flowing in the bearing cooling and lubricating structure according to an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided 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.

Fig. 1 is a schematic structural diagram of a bearing cooling and lubricating structure according to an embodiment of the present invention. Fig. 2 is a schematic structural view of fig. 1 from another view angle. As shown in fig. 1 and 2, the bearing cooling and lubricating structure 10 includes a supporting body 12, a first oil pipe 13, a second oil pipe 14, and a partition block 15, wherein the first oil pipe 13 and the second oil pipe 14 are located outside the supporting body 12, and the partition block 15 is located between the first oil pipe 13 and the second oil pipe 14.

The carrier body 12 comprises a bearing-carrying receiving chamber 121, a first annular groove 122, a second annular groove 123 and a connecting recess 124. An oil inlet 1221 is arranged at one end of the first annular groove 122, an oil outlet 1222 is arranged at the other end of the first annular groove 122, and the first annular groove 122 is located on the inner wall of the accommodating cavity 121. The second annular groove 123 is located at the bottom of the accommodating cavity 121, one end of the second annular groove 123 is connected with one side of the first annular groove 122, and the other end of the second annular groove 123 is connected with the other side of the first annular groove 122. The connection notch 124 is located at a connection position where the second annular groove 123 is connected to the first annular groove 122, and the second annular groove 123 is connected to the first annular groove 122 through the connection notch 124, specifically, the connection notch 124 is arc-shaped, but not limited thereto. The first oil pipe 13 is connected with the oil inlet 1221, the second oil pipe 14 is connected with the oil outlet 1222, and the partition block 15 is located between the oil inlet 1221 and the oil outlet 1222. In the embodiment, the carrier 12 is circular, but not limited thereto, for example, the carrier 12 may also be square; the first oil pipe 13 and the second oil pipe 14 are located in the same axial direction, but not limited thereto, for example, the first oil pipe 13 is located below the second oil pipe 14.

The accommodating cavity 121 is provided with a supporting step 1211 for supporting the bearing and an oil blocking rib 1212, the supporting step 1211 is connected to an inner wall of the accommodating cavity 121, two ends of the oil blocking rib 1212 are respectively connected to sidewalls of the supporting step 1211, and the oil blocking rib 1212 and the supporting step 1211 surround to form a second annular groove 123. The connection notches 124 are respectively disposed on the inner wall of the accommodating cavity 121 and the support step 1211, and specifically, one side of the connection notch 124 extends to the first annular groove 122, and the other side of the connection notch 124 extends to the second annular groove 123, so that the second annular groove 123 is connected to the first annular groove 122. In this embodiment, the oil blocking rib 1212 has a U-shape, but the invention is not limited thereto, and for example, the oil blocking rib 1212 may have a circular arc shape.

The utility model discloses a derailleur includes gearbox housing, foretell bearing cooling and lubrication structure 10 and bearing 20, and bearing cooling and lubrication structure 10 sets up on gearbox housing, and bearing 20 sets up on bearing cooling and lubrication structure 10. In the present embodiment, the bearing cooling and lubricating structure 10 is formed on the transmission case by casting.

Fig. 3 is a schematic cross-sectional structural diagram of a bearing disposed at a C-C position on a bearing cooling and lubricating structure according to an embodiment of the present invention. Fig. 4 is a schematic sectional view at a-a in fig. 3. As shown in fig. 3 and 4, the bearing 20 is disposed in the accommodating cavity 121, the bearing 20 includes a roller seal cover 21, the roller seal cover 21 is opposite to the second annular groove 123, an outer wall of the bearing 20 and the first annular groove 122 form a first oil passage 101 in combination, and the first oil passage 101 is a seal oil passage. The bottom of the bearing 20 and the second annular groove 123 are combined to form the second oil passage 102, the third oil passage 103 is formed by combining the bearing 20 and the connection notch 124, and the third oil passage 103 is connected between the first oil passage 101 and the second oil passage 102. The first oil pipe 13 forms an inlet oil passage 104 with an oil inlet 1221 at one end of the first annular groove 122, and the second oil pipe 14 forms an outlet oil passage 105 with an oil outlet 1222 at the other end of the first annular groove 122. Because the first annular groove 122 is an incomplete circular structure, the partition block 15 is formed between the inlet oil passage 104 and the outlet oil passage 105, one side of the partition block 15 is in contact with the outer wall of the bearing 20, oil is not filled between the partition block 15 and the bearing 20, and when the oil enters the inlet oil passage 104, the partition block 15 guides the oil to the second oil passage 102 to play a role in blocking the oil. In the present embodiment, the first oil passage 101, the second oil passage 102, and the third oil passage 103 are machined, and the oil blocking rib 1212 is formed by casting, but not limited thereto.

It is worth mentioning that the height of the oil blocking rib 1212 is smaller than the height of the support step 1211, so that a gap exists between the bearing 20 and the oil blocking rib 1212 to prevent the oil blocking rib 1212 from interfering with the movement of the bearing 20, and preferably, the height of the oil blocking rib 1212 is 3 mm.

Fig. 5 is a schematic flow diagram of the cooling lubricant flowing in the bearing cooling and lubricating structure according to an embodiment of the present invention. Fig. 6 is another schematic flow diagram of the cooling lubricant flowing in the bearing cooling and lubricating structure according to an embodiment of the present invention. As shown in fig. 5 and fig. 6, the principle of cooling and lubricating the bearing 20 by the bearing cooling and lubricating structure 10 according to an embodiment of the present invention is roughly:

the cooling lubricating oil is introduced from the inlet oil channel 104 under the action of pressure, a part of the cooling lubricating oil enters the first oil channel 101, flows along the first oil channel 101 and finally flows out from the outlet oil channel 105, and because the first oil channel 101 circumferentially surrounds the bearing 20, the heat of the bearing 20 can be efficiently taken away when the part of the cooling lubricating oil circumferentially passes through the bearing 20; meanwhile, another part of the cooling lubricating oil is guided into the second oil channel 102 through the third oil channel 103 formed by combining the bearing 20 and the connecting notch 124, namely, at the roller seal cover 21 at the lower side of the bearing 20, the part of the cooling lubricating oil in the second oil channel 102 cools and lubricates the roller seal cover 21 of the bearing 20, then the part of the cooling lubricating oil is guided out into the first oil channel 101 through the third oil channel 103 at the other side, and the part of the cooling lubricating oil is mixed with the cooling lubricating oil in the first oil channel 101 and finally guided out through the outlet oil channel 105, so that the cooling and lubrication of the bearing 20 are completed.

The bearing cooling and lubricating structure 10 and the bearing 20 of the utility model form a first oil duct 101, a second oil duct 102 and a third oil duct 103, the first oil duct 101 circumferentially surrounds the bearing 20, the second oil duct 102 is positioned below the bearing 20, the three-dimensional and sealed cooling and lubrication of the bearing 20 in a full-coverage manner can be realized, and the problems of local heat dissipation failure and local poor lubrication are solved; when the bearing cooling and lubricating structure 10 is applied to a transmission, the bearing cooling and lubricating structure 10 is formed on a transmission shell in a casting forming mode, the process is simple, redundant parts are not added, the manufacturing cost is reduced, the first oil duct 101, the second oil duct 102 and the third oil duct 103 can be completed through machining from one side of the transmission shell, the oil blocking rib 1212 and the transmission shell can be integrally cast and formed, and the machining is convenient.

In this document, unless expressly stated or limited otherwise, 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 can be understood in a specific case to those of ordinary skill in the art.

As used herein, the ordinal adjectives "first", "second", etc., used to describe an element are merely to distinguish between similar elements and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The bearing cooling and lubricating structure is characterized by comprising a bearing body (12), wherein the bearing body (12) comprises a containing cavity (121) for containing a bearing (20), a first annular groove (122) and a second annular groove (123), an oil inlet (1221) is formed in one end of the first annular groove (122), an oil outlet (1222) is formed in the other end of the first annular groove (122), the first annular groove (122) is located on the inner wall of the containing cavity (121), the second annular groove (123) is located at the bottom of the containing cavity (121), one end of the second annular groove (123) is connected with one side of the first annular groove (122), and the other end of the second annular groove (123) is connected with the other side of the first annular groove (122).

2. The bearing cooling and lubricating structure according to claim 1, characterized in that the bearing cooling and lubricating structure (10) further comprises a first oil pipe (13) and a second oil pipe (14), the first oil pipe (13) and the second oil pipe (14) are located outside the carrier body (12), the first oil pipe (13) is connected with the oil inlet (1221), and the second oil pipe (14) is connected with the oil outlet (1222).

3. The bearing cooling and lubrication structure according to claim 1, characterized in that said bearing cooling and lubrication structure (10) further comprises a block (15), said block (15) being located between said oil inlet (1221) and said oil outlet (1222).

4. The bearing cooling and lubricating structure according to claim 1, wherein a supporting step 1211 and an oil blocking rib (1212) for supporting the bearing (20) are arranged in the accommodating cavity (121), the supporting step 1211 is connected to an inner wall of the accommodating cavity (121), two ends of the oil blocking rib (1212) are respectively connected to side walls of the supporting step 1211, and the oil blocking rib (1212) and the supporting step 1211 enclose to form the second annular groove (123).

5. The bearing cooling and lubrication structure according to claim 4, wherein the supporting body (12) further comprises a connection notch (124), the connection notch (124) is disposed on the inner wall of the receiving cavity (121) and penetrates through the support step (1211), and the second annular groove (123) is connected with the first annular groove (122) through the connection notch (124).

6. The bearing cooling and lubricating structure according to claim 4, wherein the height of the oil deflector (1212) is smaller than the height of the support step (1211).

7. A transmission comprising a transmission housing, characterized in that the transmission further comprises a bearing cooling and lubricating structure (10) according to any one of claims 1 to 6, the bearing cooling and lubricating structure (10) being provided on the transmission housing.

8. The transmission according to claim 7, characterized in that the bearing cooling and lubricating structure (10) is formed on the transmission housing by means of casting.

9. The transmission of claim 7, further comprising a bearing (20), the bearing (20) being disposed within the receiving cavity (121), an outer wall of the bearing (20) combining with the first annular groove (122) to form a first oil passage (101), and a bottom of the bearing (20) combining with the second annular groove (123) to form a second oil passage (102).

10. The transmission of claim 9, further comprising a third oil passage (103), the third oil passage (103) being connected between the first oil passage (101) and the second oil passage (102).