CN217814901U - Bearing cooling structure of hybrid power system - Google Patents

Abstract

The utility model provides a bearing cooling structure of a hybrid power system, wherein the mounting surface of a concave bearing on a shell is a concave surface, and the mounting surface of a convex bearing on the shell is a convex surface; the bearing cooling structure comprises a first oil passage, a second oil passage and a third oil passage which are communicated. The first oil duct is provided with an oil outlet, the shell is provided with a diversion rib at a position corresponding to the oil outlet, the mounting surface of the concave bearing on the shell is provided with a diversion trench, one end of the diversion trench is communicated with an oil path formed by the diversion rib, and the other end of the diversion trench is communicated with the concave bearing; the cooling oil in the first oil duct flows out from the oil outlet hole, flows to the guide groove along the guide ribs and finally flows onto the concave bearing. The second oil duct is provided with an oil outlet which is communicated with the diversion trench, and cooling oil in the second oil duct flows out of the oil outlet and flows onto the concave bearing along the diversion trench. And the third oil duct is provided with a plurality of oil outlets which respectively correspond to the plurality of convex bearings, and cooling oil in the third oil duct flows out of the oil outlets and flows to the plurality of convex bearings.

Description

A bearing cooling structure for a hybrid power system

technical field

The utility model relates to the technical field of a hybrid power system, in particular to a bearing cooling structure of a hybrid power system.

Background technique

In the gearbox of the hybrid system, the bearings and gear shaft parts are connected to each other through the motor housing and the front housing to realize the support and centering of the shaft system. As the bearing supports the rotation of the gear shaft system parts, the bearing balls will rub against the inner and outer rings of the bearing, and the temperature of the bearing will rise. When the hybrid system continues to work at high speed, the friction force of the bearing balls will increase, and the heat will rise. Cause bearing damage and failure.

Utility model content

In order to overcome the above-mentioned technical defects, the purpose of the present utility model is to provide a bearing cooling structure for a hybrid power system that directly cools and lubricates the bearing.

The utility model discloses a bearing cooling structure for a hybrid power system. The bearings include several concave bearings and several convex bearings; The mounting surface on the top is a concave surface; the bearing cooling structure includes a first oil passage, a second oil passage and a third oil passage;

An oil outlet hole is provided on the first oil passage, flow guide ribs are provided on the housing corresponding to the oil outlet hole, and flow guide grooves are provided on the mounting surface of the concave bearing on the housing. One end of the diversion groove communicates with the oil passage formed by the diversion ribs, and the other end leads to the concave bearing; the cooling oil in the first oil passage flows out from the oil outlet hole and flows along the diversion ribs to the diversion groove, and finally to the concave bearing;

The second oil passage is provided with an oil outlet, and the oil outlet communicates with the guide groove, and the cooling oil in the second oil passage flows out from the oil outlet and flows along the guide groove. flow onto said concave bearing;

The third oil passage is provided with several oil outlets, and the oil outlets respectively correspond to the positions of several convex bearings, and the cooling oil in the third oil passage flows out from the oil outlets, directly flows to several of said convex bearings.

Preferably, the concave bearing includes No. 1 bearing and No. 2 bearing, and the convex bearing includes No. 3 bearing and No. 4 bearing; the cooling oil in the first oil passage flows out from the oil outlet hole and flows along the The guide rib flows to the guide groove, and finally flows to the No. 1 bearing; the cooling oil in the second oil passage flows out from the oil outlet, and flows along the guide groove to the on the No. 2 bearing; the two ends of the third oil passage are respectively provided with the oil outlets, and the two oil outlets correspond to the positions of the No. 3 bearing and the No. 4 bearing respectively; the third The cooling oil in the oil passage flows out from the oil outlets at both ends, and flows to the No. 3 bearing and the No. 4 bearing respectively.

Preferably, the concave bearing further includes a No. 5 bearing; the guide groove extends from the No. 2 bearing to the No. 5 bearing; the cooling oil in the second oil passage flows out from the oil outlet hole, and Flow along the diversion groove to the No. 2 bearing and No. 5 bearing in sequence.

Preferably, the convex bearing also includes a No. 6 bearing; the third oil passage also includes a third sub-oil passage, one end of the third sub-oil passage communicates with the third oil passage, and the other end is provided with The oil outlet, and the oil outlet corresponds to the position of the No. 6 bearing; the cooling oil in the third sub-oil passage flows out from the oil outlet and directly flows to the No. 6 bearing.

Preferably, between the first oil passage and the second oil passage, between the first oil passage and the third oil passage, between the second oil passage and the third oil passage At least one reinforcing rod is provided.

Preferably, the first oil passage, the third oil passage, and the second oil passage are connected in sequence; the first reinforcing rod is provided between the first oil passage and the second oil passage, A second reinforcement rod is provided between the third oil passage and the first reinforcement rod, and a third oil passage is provided between the corner of the third oil passage and the second oil passage and the first oil passage. Reinforcing rod.

Preferably, the outer side of the first oil channel relative to the bearing cooling structure and the second oil channel are provided with connecting ears relative to the outer side of the bearing cooling structure, and the connecting ears are provided with bolt holes, through which The bolt holes mount the bearing cooling structure to the housing.

Preferably, fourth reinforcing rods are respectively provided between the connecting ear and the first oil passage, and between the second oil passage.

Preferably, the diameter of the oil outlet is 1-2 mm.

Preferably, the bearing cooling structure is arranged radially relative to the bearing; the bearing cooling structure further includes an oil inlet channel, the oil inlet channel is arranged relative to the axial direction of the bearing and extends to the inside of the housing; One end of the oil inlet channel communicates with the first oil passage, and the other end communicates with the housing oil passage inside the housing; cooling oil enters the first oil passage from the housing oil passage, and then enters the The second oil passage and the third oil passage are used to cool the plurality of concave bearings and the plurality of convex bearings.

After adopting the above technical solution, compared with the prior art, it has the following beneficial effects:

1. Directly cool the convex bearings and concave bearings to protect the bearings and avoid damage and failure caused by excessive temperature; the housing is molded by die-casting process to form guide ribs, guide grooves, etc. that match the bearing cooling structure, and the bearing cooling structure It is welded and formed by injection molding and ultrasonic welding, and then connected with the shell by bolts.

Description of drawings

Fig. 1 is a structural schematic diagram of the connection relationship between the bearing cooling structure on the housing and each bearing provided by the utility model;

Fig. 2 is a structural schematic diagram of the housing provided by the utility model in cooperation with the bearing cooling structure;

Fig. 3 is a structural schematic diagram of the diversion ribs and the diversion grooves on the housing provided by the present invention;

Fig. 4 is a structural schematic diagram of another diversion groove on the casing provided by the present invention;

Fig. 5 is a structural schematic diagram of the bearing cooling structure provided by the utility model;

Fig. 6 is a structural schematic diagram of the oil inlet channel on the casing provided by the present invention.

Among them: 1-first oil passage, 2-second oil passage, 3-third oil passage, 4-third sub-oil passage, 5-No. 1 bearing, 6-No. 2 bearing, 7-No. 3 bearing, 8 - No. 4 bearing, 9- No. 5 bearing, 10- No. 6 bearing, 11- Diversion rib, 12- Diversion groove, 13- Oil outlet, 14- Connecting ear, 15- First reinforcing rod, 16- No. Two reinforcement rods, 17-the third reinforcement rod, 18-the fourth reinforcement rod, 19-oil outlet hole, 20-oil inlet passage, 21-housing oil passage.

Detailed ways

The advantages of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the present utility model, unless otherwise stipulated and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be The internal communication between two elements may be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

In the following description, the use of suffixes such as "module", "part" or "unit" used to represent elements is only for facilitating the description of the present invention, and has no specific meaning by itself. Therefore, "module" and "component" may be mixedly used.

Referring to accompanying drawings 1-3, the utility model discloses a bearing cooling structure for a hybrid power system. The bearing includes several concave bearings and several convex bearings. The bearing is a bearing with a convex mounting surface on the shell. The mounting surface can be understood as the shell surface around the bearing. The mounting surface of the concave bearing is lower than the overall shape of the shell; the mounting surface of the convex bearing is higher than the overall shape of the shell. . The bearing cooling structure includes a first oil passage 1, a second oil passage 2 and a third oil passage 3, through which several concave bearings and several convex bearings are directly cooled simultaneously.

Specifically, the first oil passage 1 is provided with an oil outlet hole 19, and the housing is provided with flow guide ribs 11 corresponding to the oil outlet hole 19, and the concave bearing is provided with a flow guide groove 12 on the mounting surface of the housing. , one end of the diversion groove 12 communicates with the oil passage formed by the diversion rib 11, and the other end leads to the concave bearing. The cooling oil in the first oil passage 1 flows out from the oil outlet hole 19 , flows along the guide rib 11 to the guide groove 12 , and finally flows to the concave bearing to directly cool the concave bearing.

The second oil passage 2 is provided with an oil outlet 13, and the oil outlet 13 communicates with the diversion groove 12, and the cooling oil in the second oil passage 2 flows out from the oil outlet 13, and flows along the diversion groove 12 to the concave bearing Above, direct cooling of concave bearings.

The third oil passage 3 is also provided with several oil outlets 13. The difference is that the oil outlets 13 directly correspond to the positions of several convex bearings respectively, and the cooling oil in the third oil passage 3 flows out from the oil outlets 13, directly Flow to several convex bearings for direct cooling of the convex bearings.

It should be noted that the oil outlet hole 19 can be understood as a small hole, and the oil outlet hole 19 is usually provided on the bottom surface of the first oil passage 1 . The oil outlet 13 is a larger liquid outlet than the oil outlet 19 , and is usually located at the ends of the second oil passage 2 and the third oil passage 3 . Preferably, the diameter of the oil outlet 13 is 1-2 mm.

The utility model can directly cool the convex bearings and the concave bearings, protect the bearings, and avoid damage and failure caused by excessive temperature; the housing is molded by die-casting process to form the diversion ribs 11 and diversion grooves 12 that match the bearing cooling structure. , The bearing cooling structure is welded and formed by injection molding and ultrasonic welding, and then fixedly connected with the shell by bolts.

Preferably, the concave bearing includes No. 1 bearing 5 and No. 2 bearing 6 , and the convex bearing includes No. 3 bearing 7 and No. 4 bearing 8 . The cooling oil in the first oil passage 1 flows out from the oil outlet hole 19, falls into the oil passage formed by the guide rib 11, flows along the guide rib 11 to the guide groove 12, and finally flows to the No. 1 bearing 5 Lubricate and cool it. The cooling oil in the second oil passage 2 flows out from the oil outlet 13, falls into the guide groove, and flows along the guide groove 12 to the No. 2 bearing 6 to lubricate and cool it. The two ends of the third oil passage 3 are respectively provided with oil outlets 13, and the two oil outlets 13 respectively correspond to the positions of No. 3 bearing 7 and No. 4 bearing 8; 13 flows out, flows to (falls into) No. 3 bearing 7 and No. 4 bearing 8 respectively and lubricates and cools it.

Further, referring to FIG. 4 , the concave bearing also includes a fifth bearing 9 , the fifth bearing 9 is arranged around the second bearing 6 , and the diversion groove extends from the second bearing 6 to the fifth bearing 9 . The cooling oil in the second oil passage 2 flows out from the oil outlet 13, falls into the guide groove, and flows along the guide groove 12 to the No. 2 bearing 6 and the No. 5 bearing 9 to lubricate and cool them.

Further, the convex bearing also includes a No. 6 bearing 10 , and the No. 6 bearing 10 is arranged between the No. 3 bearing 7 and the No. 4 bearing 8 . The third oil passage 3 also includes a third sub-oil passage 4, one end of the third sub-oil passage 4 communicates with the third oil passage 3, and the other end is provided with an oil outlet 13, and the oil outlet 13 corresponds to the No. 6 bearing 10 s position. The cooling oil in the third oil passage 3 flows into the third sub-oil passage 4, and the cooling oil in the third sub-oil passage 4 flows out from the oil outlet 13, and directly flows to the No. 6 bearing 10 for lubricating and cooling it.

Preferably, at least one reinforcing Rods are used to strengthen the structure between the various oil passages to prevent them from being damaged in the case of high-speed oil flow.

A preferred one, referring to Fig. 5, the first oil passage 1, the third oil passage 3, and the second oil passage 2 are connected in sequence. A first reinforcing rod 15 is provided between the first oil passage 1 and the second oil passage 2, a second reinforcing rod 16 is provided between the third oil passage 3 and the first reinforcing rod 15, the third oil passage 3 and the second A third reinforcing rod 17 is provided between the corner of the oil passage 2 and the first oil passage 1 to strengthen the structure between each oil passage.

Preferably, the outer side of the first oil passage 1 relative to the bearing cooling structure and the second oil passage 2 are provided with connecting ears 14 relative to the outer side of the bearing cooling structure, and the connecting ears 14 are provided with bolt holes through which the bearings are cooled. A structure is mounted to the housing.

Further, fourth reinforcing rods 18 are respectively provided between the connecting ear 14 and the first oil passage 1, and between the second oil passage 2, through which the connecting ear 14 and the first oil passage 1, 1 and 2 are reinforced. The stability between the second oil passages 2 enhances the stability between the bearing cooling structure and the housing.

Preferably, referring to FIG. 6 , the radial arrangement of the bearing cooling structure relative to the bearing can be understood as being arranged on the radial surface of the housing relative to the bearing. The bearing cooling structure also includes an oil inlet passage 20, which is arranged relative to the axial direction of the bearing and extends to the inside of the housing, and is vertically arranged between the oil inlet passage 20 and each oil passage. One end of the oil inlet passage 20 communicates with the first oil passage 1, and the other end communicates with the housing oil passage 21 inside the housing. The cooling oil enters the first oil passage 1 from the housing oil passage 21, and then enters the second oil passage 2 and The third oil passage 3 is used to directly cool several concave bearings and several convex bearings through the oil outlet holes 19 , oil guide ribs, guide grooves, and oil outlets 13 .

In addition, it should be noted that the guide grooves 12 and guide ribs 11 on the housing are only suitable for concave bearings, while the direct oil outlet 13 on the oil passage is suitable for both convex bearings and concave bearings. It can be understood that the No. 2 bearing, the No. 3 bearing and the No. 6 bearing may also be concave bearings.

It should be noted that the embodiments of the present utility model have better implementability, and are not intended to limit the present utility model in any form. Any person familiar with the field may use the technical content disclosed above to change or modify the equivalent effective Embodiments, as long as they do not deviate from the content of the technical solution of the utility model, any modifications or equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (10)

1. A bearing cooling structure of a hybrid power system is characterized in that the bearing comprises a plurality of concave bearings and a plurality of convex bearings; the mounting surface of the concave bearing on the shell is a concave surface, and the mounting surface of the convex bearing on the shell is a convex surface;

the bearing cooling structure comprises a first oil duct, a second oil duct and a third oil duct which are communicated with each other;

the first oil duct is provided with an oil outlet, a diversion rib is arranged on the shell corresponding to the oil outlet, a diversion groove is arranged on the installation surface of the concave bearing on the shell, one end of the diversion groove is communicated with an oil path formed by the diversion rib, and the other end of the diversion groove is communicated with the concave bearing; the cooling oil in the first oil duct flows out of the oil outlet hole, flows to the flow guide groove along the flow guide rib and finally flows to the concave bearing;

the second oil duct is provided with an oil outlet which is communicated with the diversion trench, and cooling oil in the second oil duct flows out of the oil outlet and flows onto the concave bearing along the diversion trench;

the third oil duct is provided with a plurality of oil outlets, the oil outlets correspond to the positions of the convex bearings respectively, and cooling oil in the third oil duct flows out of the oil outlets and directly flows to the convex bearings.

2. The bearing cooling structure according to claim 1, wherein the concave bearings include a bearing number one and a bearing number two, and the convex bearings include a bearing number three and a bearing number four;

the cooling oil in the first oil duct flows out of the oil outlet hole, flows to the flow guide groove along the flow guide rib and finally flows to the first bearing;

cooling oil in the second oil duct flows out of the oil outlet and flows onto the second bearing along the flow guide groove;

the two ends of the third oil duct are respectively provided with the oil outlets, and the two oil outlets respectively correspond to the positions of the third bearing and the fourth bearing; and cooling oil in the third oil duct flows out from the oil outlets at two ends and respectively flows to the third bearing and the fourth bearing.

3. The bearing cooling structure according to claim 2, wherein the concave bearing further comprises a number five bearing;

the diversion trench extends from the second bearing to the fifth bearing;

and cooling oil in the second oil duct flows out of the oil outlet hole and flows to the second bearing and the fifth bearing in sequence along the guide groove.

4. The bearing cooling structure according to claim 3, wherein the convex surface bearing further comprises a number six bearing;

the third oil duct also comprises a third sub-oil duct, one end of the third sub-oil duct is communicated with the third oil duct, the other end of the third sub-oil duct is provided with the oil outlet, and the oil outlet corresponds to the position of the bearing number six;

and cooling oil in the third sub-oil passage flows out from the oil outlet and directly flows to the number six bearing.

5. The bearing cooling structure according to claim 1, wherein at least one stiffener is provided between the first oil passage and the second oil passage, between the first oil passage and the third oil passage, and between the second oil passage and the third oil passage.

6. The bearing cooling structure according to claim 5, wherein the first oil passage, the third oil passage, and the second oil passage are communicated in this order; the reinforcing rods comprise a first reinforcing rod, a second reinforcing rod and a third reinforcing rod;

the first reinforcing rod is arranged between the first oil duct and the second oil duct, the second reinforcing rod is arranged between the third oil duct and the first reinforcing rod, and the third reinforcing rod is arranged between the corner of the third oil duct and the second oil duct and the first oil duct.

7. The bearing cooling structure according to claim 6, wherein an outer side of the first oil passage with respect to the bearing cooling structure and an outer side of the second oil passage with respect to the bearing cooling structure are provided with engaging lugs, and the engaging lugs are provided with bolt holes through which the bearing cooling structure is mounted to the housing.

8. The bearing cooling structure according to claim 7, wherein fourth reinforcing rods are provided between the engaging lug and the first oil passage and between the engaging lug and the second oil passage, respectively.

9. The bearing cooling structure according to claim 1, wherein the bore diameter of the oil outlet is 1-2mm.

10. The bearing cooling structure according to claim 1, wherein the bearing cooling structure is disposed radially with respect to a bearing;

the bearing cooling structure further comprises an oil inlet channel, the oil inlet channel is arranged relative to the axial direction of the bearing and extends to the interior of the shell; one end of the oil inlet channel is communicated with the first oil duct, and the other end of the oil inlet channel is communicated with a shell oil way in the shell;

cooling oil enters the first oil passage from the housing oil passage and then enters the second oil passage and the third oil passage, so that the plurality of concave bearings and the plurality of convex bearings are cooled.

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