Shell for bearing installation

Abstract

The utility model relates to a shell for mounting a bearing, which comprises a shell body provided with an oil passage for cooling, and is characterized in that the bottom of the shell body is provided with an annular receiving disc extending in the horizontal direction of a shaft hole, and the bearing to be assembled is arranged in the corresponding shaft hole of the shell body in a sinking manner; the bearing to be assembled is supported through the annular bearing disc, at least one cooling channel used for guiding cooling liquid is formed in the inner wall face defining the shaft hole, an opening allowing the cooling liquid to flow back to the oil way channel is formed in the annular bearing disc, and by means of a rolling body of the bearing to be assembled, the cooling liquid flows to the oil way channel from the opening from bottom to top. The spiral cooling channel and the annular bearing disc are arranged on the inner wall face of the shaft hole, cooling liquid cools the shell body and the bearing, meanwhile, the opening is formed in the annular bearing disc, the cooling liquid is driven by the rolling body to flow back to the oil way channel from bottom to top through the opening, and therefore circulating cooling is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a shell for installing a bearing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. They usually have an inner ring and an outer ring that can rotate relative to each other. Bearings are often assembled in rotating shafts or shaft holes. They are mainly used to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. Generally, bearings are often installed in reducer housings, gearbox housings, or motor housings. The gearbox housing is an example of an assembly part. The gearbox housing includes a shaft hole for the shaft to enter. After long-term use, a large amount of heat will be generated in the gearbox housing, causing the temperature of the lubricating oil in the gearbox housing to rise rapidly. If the transmission is not cooled and depressurized in time, components such as oil seals, filters, and synchronizers will fail.

[0003] In order to cool down the inside of the transmission, such as the Chinese utility model patent "A transmission housing structure" with patent number ZL202122658188.7, the transmission housing is provided with an S-shaped first channel, and two second channels distributed along the first channel are provided on both sides of the first channel. The first channel is provided with coolant, which can absorb the heat generated by the movement of the internal structure of the transmission, and the medium provided in the second channel is wind entering from the outside. The heat absorbed by the coolant in the first channel will be transferred to the second channel through the heat conductor between the two. The flowing wind can take away the heat in the coolant, and at the same time take away the heat generated inside the transmission housing. When the temperature of the coolant is too high, it can be replaced by unscrewing the movable plug on the channel. Another example is the Chinese utility model patent "Transmission housing, transmission and vehicle" with patent number ZL202010300506.X. The transmission housing body is provided with a first bearing hole, a second bearing hole and a third bearing hole. The first bearing hole is used to install the differential output shaft, and a part of its gear is always below the oil level. The rotation of the ring gear lifts the oil and allows the oil to enter the first oil circuit. Under the guidance of the first oil circuit, the oil flows to the second bearing hole and the third bearing hole. The oil can cool and lubricate the transmission housing and the bearing holes along the oil circuit.

[0004] However, the above two cooling methods are only for the transmission housing and the bearing hole. For the bearing installed in the transmission housing bearing hole, the balls between the inner ring and the outer ring are in high-speed operation, and a large amount of heat will be generated inside the bearing during this process. If the heat of this part cannot be discharged in time, the bearing will be deformed by thermal stress and damaged, which will eventually affect the normal operation of the bearing. Therefore, it is necessary to further improve the structure of the housing. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a housing for bearing installation which can dissipate heat for the bearing in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is as follows: the shell for bearing installation includes a shell body, and the shell body is provided with an oil path channel for cooling, and is characterized in that: the bottom of the shell body has an annular receiving plate extending horizontally in the axial hole, the bearing to be assembled is sunken in the axial hole corresponding to the shell body, and the bearing to be assembled is supported by the annular receiving plate, and at least one cooling channel for guiding the coolant is opened on the inner wall surface surrounding the axial hole, and correspondingly, the annular receiving plate is provided with an opening for the coolant to flow back to the oil path channel, and with the help of the rolling body of the bearing to be assembled, the coolant flows from the opening to the oil path channel from bottom to top.

[0007] In order to achieve the cooling of the bearing, it is preferred that each of the cooling channels has at least one open end, and each cooling channel is connected through its own open end. The cooling channel can be set as one or more. If there is one, the cooling channel can be axially arranged, or it can be in an "S" shape, or other shapes "W" shape; if there are multiple cooling channels, they are connected through the open ends to form a cooling channel. Compared with an independent cooling channel, it can be more selectively adjusted and matched according to the cooling parts required by different bearings. Among them, the coolant in the cooling channel flows out through the open end and gathers together, and flows to the annular receiving plate at the bottom of the shell body. The annular receiving plate is provided with a bearing, which can cool and lubricate the bearing outer ring, the bearing inner ring and the rolling body between the two. The rolling body can guide the coolant from bottom to top back to the oil channel during rotation, thereby forming a circulating coolant channel.

[0008] In order to facilitate the processing of the cooling channels, preferably, each of the cooling channels is arranged around the axis B of the housing body. The cooling channels arranged around the axis B are more convenient to process.

[0009] In order to facilitate processing and improve the strength of the shell body, it is preferred that only one cooling channel is provided and is provided in a spiral shape. Among them, only one cooling channel is provided on the inner wall surface of the shaft hole, which simplifies the processing process. At the same time, the cooling channel is distributed in a spiral shape, which can make the coolant flow path longer, thereby extending the cooling time of the coolant on the shell body, thereby improving the cooling effect; secondly, the setting of the spiral channel avoids axial grooving on the shell body. When the dissipated heat causes the shell body to expand, the stress will not accumulate at the notch and cause damage to the shell body, that is, the setting of the spiral channel makes the stress distribution uniform and the overall strength of the shell is high.

[0010] Compared with the prior art, the advantages of the utility model are:

[0011] 1. A cooling channel is provided on the inner wall surface of the shaft hole of the housing body, and an annular receiving plate is provided at the bottom of the housing body. The coolant in the cooling channel can cool the housing body and the bearing, thereby extending the service life of the gearbox and the bearing;

[0012] 2. In addition, an opening is provided on the annular receiving plate. When the coolant flows into the receiving plate from the cooling channel, driven by the rolling elements of the bearing, the coolant can flow back from the opening to the oil channel from bottom to top, thereby realizing circulating cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the housing body in Example 1 of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure in another direction;

[0016] Figure 4 for Figure 1 A top view of

[0017] Figure 5 This is a schematic diagram of the decomposition of the first embodiment of the utility model

[0018] Figure 6 It is a partial cross-sectional schematic diagram of Example 1 of the utility model;

[0019] Figure 7 This is a schematic diagram of the three-dimensional structure of the housing body in Example 2 of the utility model;

[0020] Figure 8 It is a schematic diagram of the three-dimensional structure of Example 2 of the utility model.

[0021] In the figure: 1, shell body; 11, shaft hole; 12, annular receiving plate; 2, bearing; 3, rolling element; 4, cooling channel; 41, open end; 5, opening. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figures 1 to 6 As shown, it is an optimal embodiment of the utility model. The housing for bearing installation includes a housing body 1. The housing body 1 in this embodiment is described by taking a gearbox housing as an example, wherein the housing body 1 can be made of a material with low heat transfer efficiency, and an oil passage for cooling is arranged on the housing body 1. The specific structure of the oil passage can refer to the Chinese utility model patent with patent number ZL202010300506.X, which will not be repeated here. The focus of this application is that the bottom of the housing body 1 has an annular receiving plate 12 extending horizontally to the shaft hole 11, and the bearing 2 to be assembled is sunken in the shaft hole 11 corresponding to the housing body 1, and the bearing 2 to be assembled is supported by the annular receiving plate 12. A cooling channel 4 for guiding the coolant is opened on the inner wall surface of the shaft hole 11, and correspondingly, an opening 5 for the coolant to flow back to the oil passage is provided on the annular receiving plate 12, and the coolant flows from the opening 5 to the oil passage from bottom to top with the help of the rolling body 3 of the bearing 2 to be assembled. A cooling channel 4 is provided on the inner wall surface of the shaft hole 11 of the shell body 1, and an annular receiving plate 12 is provided at the bottom of the shell body 1. The coolant in the cooling channel 4 can cool the shell body 1 and the bearing 2 and flow back to the oil passage, thereby extending the service life of the gearbox and the bearing 2.

[0025] refer to Figure 2 and Figure 3The cooling channel 4 can be set as one or more. In this embodiment, it is preferred that a cooling channel 4 is set on the inner wall of the shaft hole 11. The cooling channel 4 is set along the axis B where the shell body 1 is located and is distributed in a spiral shape. This setting method has the following advantages: First, only one cooling channel 4 is set to simplify the processing steps compared with setting multiple cooling channels; Second, the spiral cooling channel 4 is more convenient to process than the cooling channel 4 of "S" shape, "W" shape or other shapes, and the spiral groove can be processed by selecting a suitable rotating tool; Third, the spiral cooling channel 4 can make the coolant flow path longer, thereby extending the cooling time of the coolant on the shell body 1, and then improving the cooling effect; Fourth, the spiral setting method avoids axial grooving on the shell body 1. When the dissipated heat causes the shell body 1 to expand, the stress will not accumulate at the notch and cause damage to the shell body 1, that is, the setting method of the spiral channel makes the stress distribution uniform and the overall strength of the shell body 1 is high.

[0026] refer to Figure 3 and Figure 6 The cooling channel 4 is provided with an open end 41. When the coolant is transported from the oil passage to the shaft hole 11, the coolant is first transported along the cooling channel 4, and finally flows out from the open end 41, and then enters the opening 5 provided on the annular receiving plate 12. The annular receiving plate 12 is provided with a bearing 2. The coolant can cool and lubricate the bearing outer ring, the bearing inner ring and the rolling element 3 therebetween of the bearing 2. The rolling element 3 can guide the coolant back to the oil passage from bottom to top during rotation, thereby forming a circulation channel connected to the existing oil passage on the housing.

[0027] In addition, the housing in this embodiment is not limited to a gearbox housing, but can also be a reducer housing or a motor housing, etc.

[0028] Example 2

[0029] Compared with Example 1, Figure 7 and Figure 8 The difference of this embodiment is that the cooling channel 4 is replaced by an axial groove opened on the wall surface of the axial hole 11. The coolant through the axial groove can cool the housing body 1, and the coolant flowing out from the open end 41 of the axial groove can cool the bearing 2.

[0030] Example 3

[0031] Compared with Example 2, the difference of this embodiment is that there are multiple axial grooves, and each axial groove is connected through its own open end 41. Compared with an independent cooling channel 4, the opening of multiple cooling channels 4 can be more selectively adjusted and matched according to the cooling parts required by different bearings 2. Among them, the coolant in the cooling channel 4 flows out through each open end 41 and then gathers together, and flows to the annular receiving plate 12 at the bottom of the shell body 1. The annular receiving plate 12 is provided with a bearing 2, which can cool and lubricate the bearing outer ring, the bearing inner ring and the rolling body 3 between the two. The rolling body 3 can guide the coolant from bottom to top back to the oil channel during rotation, thereby forming a circulating coolant channel.

Claims

1. A housing for mounting a bearing, comprising a housing body (1), wherein an oil passage for cooling is arranged on the housing body (1), and characterized in that: The bottom of the housing body (1) is provided with an annular receiving plate (12) extending horizontally toward the axial hole (11); the bearing (2) to be assembled is arranged in a sunken manner in the axial hole (11) corresponding to the housing body (1), and the bearing (2) to be assembled is supported by the annular receiving plate (12); at least one cooling channel (4) for guiding coolant is provided on the inner wall surface surrounding the axial hole (11); correspondingly, the annular receiving plate (12) is provided with an opening (5) for the coolant to flow back to the oil channel; with the help of the rolling element (3) of the bearing (2) to be assembled, the coolant flows from the opening (5) to the oil channel from bottom to top.

2. The housing for bearing installation according to claim 1, characterized in that: Each of the cooling channels (4) has at least one open end (41), and each of the cooling channels (4) is connected via the respective open end (41).

3. The housing for bearing installation according to claim 2, characterized in that: Each of the cooling channels (4) is arranged around the axis B where the shell body (1) is located.

4. The housing for bearing installation according to claim 3, characterized in that: Only one cooling channel (4) is provided, and it is arranged in a spiral shape.

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