CN217607621U

CN217607621U - Oil storage structure of oil-cooled motor and oil-cooled motor applying same

Info

Publication number: CN217607621U
Application number: CN202221899959.XU
Authority: CN
Inventors: 刘宇澄
Original assignee: Leadrive Technology Shanghai Co Ltd
Current assignee: Leadrive Technology Shanghai Co Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-10-18
Anticipated expiration: 2032-07-22

Abstract

The utility model provides an oil storage structure of oil-cooled motor and oil-cooled motor of using this structure relates to the cold technical field of motor oil, include: the motor comprises an end cover connected to a motor shell and a cover plate connected to the end cover; the end cover is provided with a bearing seat hole used for being connected with one end of the motor bearing far away from the coupler; the end cover is also provided with an oil duct, one end of the oil duct is communicated to the bearing seat hole, and the other end of the oil duct extends out of the end cover; the apron can be dismantled and be connected just cover on the end cover bearing housing hole to form and be located the apron with the oil storage district between the bearing housing hole solves the most oil ducts that set up of current oil-cooled motor and lubricates the motor bearing, lacks the oil storage structure, leads to the great problem of bearing failure risk under partial operating mode.

Description

Oil storage structure of oil-cooled motor and oil-cooled motor applying same

Technical Field

The utility model relates to a cold technical field of motor oil especially relates to an oil storage structure of oil-cooled motor and the oil-cooled motor of using this structure.

Background

The bearing used in the motor is a part for supporting the shaft, which guides the rotation of the shaft, and is usually installed on the output shaft of the motor when the bearing is used in cooperation with the motor. Lubrication is the necessary condition of motor bearing normal operating, and the rear bearing of current oil-cooled motor generally adopts oil-cooled lubrication, and is specific, if set up on motor casing and predetermine the oil duct and communicate to the bearing housing hole for lubricating oil lubricates to the bearing through this oil duct.

However, under some conditions, such as when the vehicle is located in an extremely cold area, the viscosity of the lubricating oil increases, the oil pump cannot overcome resistance to suck the lubricating oil up to lubricate the bearing through the oil passage, or the oil pump fails during the operation of the vehicle, a certain amount of lubricating oil is needed to maintain the normal operation of the motor to run to a safe place, while the existing lubricating oil continuously flows after passing through the oil passage and cannot be accumulated in the bearing seat hole, and the risk of damage or failure of the bearing under the above conditions is high.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model aims to provide an oil storage structure of oil cooling motor and the oil cooling motor of using this structure solve current oil cooling motor and lubricate the motor bearing through setting up the oil duct, lack the oil storage structure, lead to the great problem of bearing failure risk under partial operating mode.

The utility model discloses an oil storage structure of oil-cooled motor, include:

the motor comprises an end cover connected to a motor shell and a cover plate connected to the end cover;

the end cover is provided with a bearing seat hole used for being connected with one end of the motor bearing far away from the coupler;

the end cover is also provided with an oil duct, one end of the oil duct is communicated to the bearing seat hole, and the other end of the oil duct extends out of the end cover;

the cover plate is detachably connected to the end cover and covers the bearing seat hole to form an oil storage area between the cover plate and the bearing seat hole.

Preferably, one end of the oil passage, which is communicated with the bearing seat hole, is higher than the lowest point of the bearing seat hole.

Preferably, a plurality of first connecting parts are arranged on the end cover in the circumferential direction of the bearing seat hole;

a plurality of second connecting parts corresponding to the first connecting parts are circumferentially arranged on the cover plate;

and the cover plate is fixed on the end cover by a bolt penetrating through the second connecting part and being fixed with the first connecting part.

Preferably, the first connecting portions are arranged on the end cap at regular intervals.

Preferably, one end of the first connecting part is fixed to the circumferential direction of the bearing seat hole, and the other end of the first connecting part extends in the direction far away from the center of the bearing seat hole.

Preferably, a seal groove is circumferentially arranged on the end cover outside the bearing seat hole;

and sealing strips corresponding to the sealing grooves are circumferentially arranged on the cover plate.

Preferably, the cover plate conforms to the bearing housing bore.

The utility model also provides an oil-cooled motor,

the motor comprises a motor body, a motor shell, a motor bearing and the oil storage structure.

After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:

the utility model provides an oil storage structure and oil cooling motor of using this structure are through setting up the oil duct at the end cover, and the apron can be dismantled and be connected to on the end cover and cover the bearing housing hole, forms an oil bath (deposit oily district promptly) bottom the bearing housing hole with the bearing housing shell together to solve current oil cooling motor and communicate to the bearing housing hole through the oil duct and lubricate to the motor bearing, lack the oil storage structure, lead to the great problem of bearing failure risk under partial operating mode.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of an oil storage structure of an oil-cooled motor according to the present invention;

fig. 2 is a schematic structural view of a cover plate in an embodiment of an oil storage structure of an oil-cooled motor according to the present invention;

fig. 3 is a schematic structural diagram of an oil storage structure of an oil-cooled motor according to an embodiment of the present invention, which is used for representing an oil storage area.

Reference numerals:

1-end cap; 11-a first connection; 2-bearing housing bore; 3-an oil duct; 4, sealing grooves; 5-cover plate; 51-a second connection; 6-sealing strips; 7-bolt;

Detailed Description

The advantages of the present invention will be further explained with reference to 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, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed 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 be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

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

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

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected" and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection through an intermediate medium, and those skilled in the art may understand the specific meanings of the above terms according to specific situations.

The first embodiment is as follows: the embodiment discloses an oil storage structure of oil-cooled motor, as the explanation, motor body is located motor housing, and motor bearing one end is passed through the shaft coupling and is connected with motor body, generally divide into front and back end (or front bearing and rear bearing) with motor bearing, and the front bearing is main atress end (bears the load), and the secondary atress of rear bearing (plays stabilizing effect), and the end cover is connected on motor housing and is located rear bearing one end in this embodiment, and this bearing housing hole is used for connecting the rear bearing. The rear bearing applied to the oil-cooled motor or the bearing with other positions actively conveying oil through the oil pump to serve as a lubricating and cooling source is mainly used for bearing lubrication and can also achieve a certain cooling effect. Specifically, referring to fig. 1-3, the method includes: the motor comprises an end cover (mainly used for a rear bearing and also can be a rear end cover) connected to a motor shell and a cover plate connected to the end cover; the end cover is provided with a bearing seat hole used for being connected with one end of the motor bearing far away from the coupler; the end cover is also provided with an oil duct, one end of the oil duct is communicated to the bearing seat hole, and the other end of the oil duct extends out of the end cover; an oil passage is formed in the shell of the rear end cover of the oil-cooled motor and is communicated with the position of the bearing seat hole, and oil in the gear box can be guided to the position for use.

In the above embodiment, the oil duct arranged on the end cover is communicated with the oil duct on the motor shell, so that oil (lubricating oil or cooling oil) enters the oil duct on the end cover through the oil duct and enters the bearing seat hole to lubricate the motor bearing, meanwhile, the cover plate is detachably connected to the end cover and covers the bearing seat hole to form an oil storage area between the cover plate and the bearing seat hole, namely, an oil storage area is formed between the cover plate and the bearing seat hole, so that a part of oil is stored in the bearing seat hole, when the electric vehicle is in an extremely cold area, the oil pump cannot suck high-viscosity lubrication to lubricate the bearing through the oil duct, and oil can be obtained from the oil storage area for normal lubrication of the bearing in the situation; if the oil pump fails in the running process of the electric vehicle, the lubricating oil cannot be conveyed to the bearing, and before the oil pump fails, part of oil can be stored in the oil storage area for normal lubrication of the bearing, so that the normal running of the motor to a maintenance point is maintained; when the working temperature of the bearing is higher under a specific working condition (high-speed large torque) after the high-pressure oil-cooled motor, the working temperature is accumulated in the oil storage area, so that the cooling effect of the bearing can be improved, and the risk of motor failure caused by high temperature is further reduced.

Based on the above, the cover plate can be in an annular plate shape and covers the bearing seat hole to form an oil storage area, and the oil storage area is arranged to ensure sufficient lubrication and cooling of the rear bearing of the motor under special working conditions or failure of the oil pump. The oil storage structure is simple, the installation is convenient, and particularly the working reliability of the oil storage structure can be greatly improved for the 800V oil-cooled bridge rear bearing.

In the above embodiment, in order to enable at least a part of oil to be stored in the oil storage area for standby use, rather than all of the oil directly flowing out of the end cover through the oil passage, the end of the oil passage communicated with the bearing seat hole is higher than the lowest point of the bearing seat hole, i.e. the oil passage is arranged in the non-vertical direction, so that even if residual oil remains in the oil storage area after oil return, the oil passes through the oil passage on the motor shell and enters the oil passage on the end cover to enter the bearing seat hole, one part of the oil flows out of the end cover after lubricating and cooling the bearing, and the other part of the oil accumulates in the oil storage area, the arrangement of the oil passage in the non-vertical direction can reduce the situation that the oil directly enters the oil passage outflow end cover under the action of gravity and cannot accumulate in the oil storage area, and further increases the oil storage efficiency. As a distance, not limited, the oil passage is preferably arranged to form an included angle of 0 ° to 90 ° (excluding 0 ° and 90 °) with the horizontal line, so that on one hand, oil can flow in or out through the oil passage, and meanwhile, the oil storage area has a certain depth, and a specific angle can be set according to an actual application scene.

In this embodiment, the end cap and the cover plate may be detachably connected, and may be fixed by a connection device, or may be fixed by a snap-fit or a snap-fit. Specifically, the end cover may be provided with a plurality of first connecting portions arranged in the circumferential direction of the bearing seat hole; a plurality of second connecting parts corresponding to the first connecting parts are circumferentially arranged on the cover plate; the cover plate is fixed on the end cover through the bolts penetrating through the second connecting parts and being fixed with the first connecting parts. This first connecting portion can set up to the shape size position unanimity with the second connecting portion, compresses tightly apron and bearing housing jogged joint through the bolt, forms the oil bath (deposit oily district promptly), reaches the oily purpose of depositing. In addition, other connecting pieces can be adopted to replace bolts, and the use of the motor is not influenced.

Further preferably, one end of the first connecting portion is fixed to the circumferential direction of the bearing seat hole, and the other end of the first connecting portion extends in a direction away from the center of the bearing seat hole, for example, the first connecting portion is a semi-arc-shaped or U-shaped connecting plate, so that a bolt penetrates through and fixes the end cover and the cover plate. Furthermore, each first connecting portion is evenly arranged on the end cover at intervals, so that the cover plate is evenly distributed around the bearing seat hole when being fixed on the end cover, meanwhile, the intervals between the first connecting portions can be adjusted by considering the influence of gravity or other actions, and the second connecting portions are matched with the first connecting portions, so that the arrangement of the second connecting portions is kept consistent with that of the first connecting portions.

In the above embodiment, in order to reduce the outflow of oil from the gap between the end cover and the cover plate after the oil enters the bearing through the end cover, a sealing structure is provided to improve the sealing effect, specifically, a sealing groove is circumferentially provided on the end cover outside the bearing seat hole; sealing strips corresponding to the sealing grooves are circumferentially arranged on the cover plate; after the cover plate is connected with the end cover, the sealing strip is extruded in the sealing groove, and it needs to be noted that the arrangement of the sealing strip does not influence the oil passage.

Specifically, in this embodiment, the cover plate is connected to the end cap and is only used for sealing the bearing seat hole and forming the oil storage area with the bearing seat hole, so that the cover plate can be arranged to be consistent with the shape of the bearing seat hole, the area of the cover plate is reduced, the occupied space on the motor shell is reduced, the overall weight of the motor shell is reduced, and meanwhile, the cost is reduced.

In this embodiment, through set up the oil duct at the end cover, realize the lubrication and the cooling of motor rear bearing, the apron passes second connecting portion and first connecting portion through the bolt and is connected to the end cover and cover the bearing housing hole, form an oil bath (deposit oily district promptly) in bearing housing hole bottom together with the bearing housing shell, the inlet port (oil duct and bearing housing hole intercommunication one end promptly) is higher than the bearing bottom, even guarantee that there is the residual oil to persist in the oil bath after the oil return, it is further, there is the sealing washer in apron and bearing housing hole junction design, reduce the condition that the oil that deposits was revealed. Simple to operate, and through the oil deposit district that apron and bearing housing hole bottom formed, can reduce at the oil pump inefficacy and the low temperature extreme condition under the unable lubrication or the cooling inefficacy that lead to for the bearing of oil duct oil transportation.

The second embodiment: this embodiment still provides an oil-cooled motor, including motor body, motor casing, motor bearing, and the aforesaid the trapped fuel structure, it is specific, motor body be with in the motor casing, motor casing and the end cover in the trapped fuel structure are trained to be connected, motor bearing one end is connected motor body, the other end extends to the end cover and is connected, the oil duct on the oil duct intercommunication motor casing on the end cover, make oil get into the bearing frame downthehole through the oil duct on the oil duct entering end cover, it deposits the oil district to form between apron and the bearing frame hole simultaneously, make partly oil can be saved downthehole at the bearing frame, so that can't give the condition of bearing through oil duct oil transportation because of the oil pump under to part operating mode.

It should be noted that the embodiments of the present invention have better practicability and are not limited to any form of the present invention, and any person skilled in the art may change or modify the technical contents disclosed above into equivalent effective embodiments, but any modifications or equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention will still fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an oil storage structure of oil-cooled motor which characterized in that includes:

2. The oil containment structure of claim 1, wherein:

and one end of the oil duct communicated with the bearing seat hole is higher than the lowest point of the bearing seat hole.

3. The oil containment structure of claim 1, wherein:

a plurality of first connecting parts are arranged on the end cover in the circumferential direction of the bearing seat hole;

4. The oil containment structure of claim 3, wherein:

the first connecting parts are arranged on the end cover at intervals.

5. The oil containment structure of claim 3, wherein:

one end of the first connecting portion is fixed in the circumferential direction of the bearing seat hole, and the other end of the first connecting portion extends in the direction away from the center of the bearing seat hole.

6. The oil containment structure of claim 1, wherein:

a sealing groove is formed in the end cover in the circumferential direction outside the bearing seat hole;

7. The oil containment structure of claim 1, wherein:

the cover plate is consistent with the bearing seat hole in shape.

8. An oil-cooled motor, its characterized in that:

comprising a motor body, a motor housing, a motor bearing, and an oil containment structure according to any one of the preceding claims 1-7.