Motor frame with inner and outer bearings

Abstract

The utility model relates to a motor frame with an inner bearing and an outer bearing, comprising a main shaft which is provided with an axial oil injection hole and an axial oil discharge hole which are formed by recessing inwards from an end surface; the first bearing assembly is connected with the main shaft in a sleeving mode and comprises an outer bearing and an outer bearing cover located on the outer side of the outer bearing, the outer bearing cover is provided with a first empty groove formed by sinking inwards from the surface, and the first empty groove is adjacent to the outer bearing; the second bearing assembly is connected with the main shaft in a sleeving mode and comprises an inner bearing and an inner bearing cover located on the outer side of the inner bearing, the inner bearing cover is provided with a second empty groove formed by sinking inwards from the surface, and the second empty groove is adjacent to the inner bearing; the axial oil injection hole and the axial oil discharge hole are respectively communicated with the first empty slot and the second empty slot; lubricating oil is injected into the axial oil injection hole and enters the outer bearing and the inner bearing through the first empty groove and the second empty groove for lubrication, redundant lubricating oil flows out of the axial oil discharge hole, the situation that a mechanism is frequently disassembled to clean old lubricating grease is avoided, and the frequency of disassembling the mechanism is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of motors, in particular to a motor frame with inner and outer bearings. BACKGROUND

[0002] The bearing is an important part in contemporary mechanical equipment and is widely used in the mechanical field. The main function of the bearing is to support the mechanical rotary body, reduce the friction coefficient in the movement process of the mechanical rotary body, and ensure the rotation precision of the mechanical rotary body. In order to improve the service life of the bearing and ensure the rotation effect of the bearing, the bearing is often lubricated.

[0003] According to the bearing lubricating structure disclosed in Chinese patent CN222458116U, the bearing lubricating structure comprises a roller and a roller shaft. The roller has an inner cavity and a connecting cavity, the two ends of the inner cavity are communicated with the two connecting cavities respectively, a bearing is arranged in the connecting cavity, the bearing divides the connecting cavity into a first region and a second region, the second region is communicated with the inner cavity, and the first region is located on the side of the bearing away from the inner cavity. The roller shaft is arranged in the bearing to be rotationally connected to the roller, one end of the roller shaft is provided with an oil injection nozzle, and a grease filling channel is arranged in the roller shaft and communicated with the oil injection nozzle and the first region respectively. When new lubricating grease needs to be added, the bearing does not need to be separately disassembled, greased and then reassembled. Old lubricating grease can be stored in the inner cavity. However, after the new lubricating grease is added for multiple times, the structure needs to be disassembled again to clean the old lubricating grease, thereby increasing the number of disassembly of the structure and being time-consuming and labor-consuming.

[0004] Therefore, it is necessary to develop a motor frame with inner and outer bearings to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a motor frame with inner and outer bearings which saves time and labor.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a motor frame with inner and outer bearings, comprising:

[0007] A main shaft has an axial oil injection hole and an axial oil discharge hole formed by being recessed inward from an end face;

[0008] A first bearing assembly is sleeved with the main shaft and comprises an outer bearing and an outer bearing cover located outside the outer bearing. The outer bearing cover has a first hollow groove formed by being recessed inward from a surface, and the first hollow groove is adjacent to the outer bearing;

[0009] A second bearing assembly is sleeved with the main shaft and comprises an inner bearing and an inner bearing cover located outside the inner bearing. The inner bearing cover has a second hollow groove formed by being recessed inward from a surface, and the second hollow groove is adjacent to the inner bearing;

[0010] The axial oil injection hole and the axial oil discharge hole are communicated with the first air slot and the second air slot respectively.

[0011] Further, the axial oil injection hole comprises a first axial oil injection hole and a second axial oil injection hole, the first axial oil injection hole is communicated with the first air slot, and the second axial oil injection hole is communicated with the second air slot.

[0012] Further, the length of the first axial oil injection hole is smaller than the length of the second axial oil injection hole.

[0013] Further, the main shaft has a first radial oil injection hole and a second radial oil injection hole which are recessed inward from the outer surface, the first radial oil injection hole is communicated with the first axial oil injection hole and the first air slot respectively, and the second radial oil injection hole is communicated with the second axial oil injection hole and the second air slot.

[0014] Further, the axial oil discharge hole comprises a first axial oil discharge hole and a second axial oil discharge hole, the first axial oil discharge hole is communicated with the first air slot, and the second axial oil discharge hole is communicated with the second air slot.

[0015] Further, the length of the first axial oil discharge hole is smaller than the length of the second axial oil discharge hole.

[0016] Further, the main shaft has a first radial oil discharge hole and a second radial oil discharge hole which are recessed inward from the outer surface, the first radial oil discharge hole is communicated with the first axial oil discharge hole and the first air slot, and the second radial oil discharge hole is communicated with the second axial oil discharge hole and the second air slot.

[0017] Further, the first bearing assembly comprises an outer bearing sleeve which is annular, sleeves the outer bearing, abuts the outer surface of the outer bearing at the inner side, and extends outward at the outer side.

[0018] Further, the second bearing assembly comprises an inner bearing sleeve which is annular, sleeves the inner bearing, abuts the inner bearing at the inner side, and extends outward at the outer side.

[0019] Compared with the prior art, the motor frame with inner and outer bearings has the advantages of saving time and labor, injecting lubricating oil into the axial oil injection hole, entering the outer bearing and the inner bearing through the first air slot and the second air slot respectively, lubricating, and flowing out the excess lubricating oil from the axial oil discharge hole, thereby avoiding frequent disassembly and cleaning of old lubricating grease, and reducing the disassembly frequency. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1 It is a sectional view of the motor frame with inner and outer bearings of the utility model,

[0022] Figure 2 It is a sectional view of the motor frame with inner and outer bearings of the utility model, Figure 1

[0023] Figure 3 It is a sectional view of the motor frame with inner and outer bearings of the utility model, Figure 1

[0024] In the drawing: 1, main shaft;2, first bearing assembly;3, second bearing assembly;4, shell;11, first axial oil injection hole;12, second axial oil injection hole;13, first axial oil discharge port;14, second axial oil discharge hole;15, first radial oil injection hole;16, second radial oil injection hole;17, first radial oil discharge port;18, second radial oil discharge hole;21, outer bearing;22, outer bearing sleeve;23, outer bearing cover;24, first empty slot;31, inner bearing;32, inner bearing sleeve;33, inner bearing cover;34, second empty slot. Specific implementation

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] Please see Figures 1 to 3 The utility model is a kind of motor frame with inner and outer bearings, it includes main shaft 1, the first bearing assembly 2 and second bearing assembly 3 of sleeve joint main shaft 1 and the shell 4 located in the outer side of main shaft 1.

[0027] Please see Figures 1 to 2 Main shaft 1 has first axial oil injection hole 11 and second axial oil injection hole 12 formed by recessing from end face to inner, and the length of first axial oil injection hole 11 is less than the length of second axial oil injection hole 12.

[0028] ​​The main shaft 1 has a first axial oil discharge port 13 and a second axial oil discharge hole 14 formed by recessing inward from the end face, and the length of the first axial oil discharge port 13 is smaller than the length of the second axial oil discharge hole 14.

[0029] The main shaft 1 has a first radial oil injection hole 15 and a second radial oil injection hole 16 formed by recessing inward from the outer surface, and the first radial oil injection hole 15 is in communication with the first axial oil injection hole 11, and the second radial oil injection hole 16 is in communication with the second axial oil injection hole 12.

[0030] The main shaft 1 has a first radial oil discharge port 17 and a second radial oil discharge hole 18 formed by recessing inward from the outer surface, and the first radial oil discharge port 17 is in communication with the first axial oil discharge port 13, and the second radial oil discharge hole 18 is in communication with the second axial oil discharge hole 14.

[0031] Please refer to Figure 3 , the first bearing assembly 2 is located at both ends of the main shaft 1 respectively, which includes an outer bearing 21, an outer bearing sleeve 22 located outside the outer bearing 21 and an outer bearing cover 23, the outer bearing 21 is sleeved with the main shaft 1, the outer bearing sleeve 22 is annular, sleeved with the outer bearing 21, the inner side of which abuts against the outer surface of the outer bearing 21, and the outer side of which extends outward to form, the number of the outer bearing cover 23 is a pair, which is located at both sides of the outer bearing 21 and the outer bearing sleeve 22 respectively, one end of which is the inner end sleeved with the main shaft 1, and the other end extending outward is the outer end, the inner end of the pair of outer bearing covers 23 is provided with a first hollow groove 24, which is formed by recessing inward from the opposite side of the outer bearing cover 23, and the outer end of the pair of outer bearing covers 23 is connected with the outer bearing sleeve 22.

[0032] The first hollow groove 24 is adjacent to the outer bearing 21, and the first radial oil injection hole 15 and the first radial oil discharge port 17 are both in communication with the first hollow groove 24.

[0033] Please refer to Figure 3 , the second bearing assembly 3 is located inside the first bearing assembly 2, which includes an inner bearing 31, an inner bearing sleeve 32 located outside the inner bearing 31 and an inner bearing cover 33, the inner bearing 31 is sleeved with the main shaft 1, the inner bearing sleeve 32 is annular, sleeved with the inner bearing 31, the inner side of which abuts against the inner bearing 31, and the outer side of which extends outward, the number of the inner bearing cover 33 is a pair, which is located at both sides of the inner bearing 31 respectively, one end of which is the inner end sleeved with the main shaft 1, and the other end extending outward is the outer end, the inner end of the pair of inner bearing covers 33 is provided with a second hollow groove 34, which is formed by recessing inward from the opposite side of the inner bearing cover 33, and the outer end of the pair of inner bearing covers 33 is connected with the inner bearing sleeve 32.

[0034] The second hollow groove 34 is adjacent to the inner bearing 31, and the second radial oil injection hole 16 and the second radial oil discharge hole 18 are both in communication with the second hollow groove 34.

[0035] The number of the shell 4 is a pair, which is connected with a pair of outer bearing sleeves 22 and a pair of inner bearing sleeves 32 through the shell 4.

[0036] The motor frame with inner and outer bearings of the utility model needs lubrication, lubricating oil is injected from the first axial oil injection hole 11 and the second axial oil injection hole 12, enters the first empty slot 24 and the second empty slot 34 through the first radial oil injection hole 15 and the second radial oil injection hole 16, lubricates the outer bearing 21 and the inner bearing 31, and the excess lubricating oil flows into the first radial oil discharge hole 17 and the second radial oil discharge hole 18 from the first empty slot 24 and the second empty slot 34, and flows out of the main shaft 1 through the first radial oil injection hole 15 and the second radial oil injection hole 16.

[0037] The motor frame with inner and outer bearings of the utility model has the characteristics of saving time and labor, lubricating oil is injected into the axial oil injection hole, enters the outer bearing and the inner bearing through the first empty slot and the second empty slot respectively, is lubricated, and the excess lubricating oil flows out of the axial oil discharge hole, so that the old lubricating grease is avoided from being cleaned by frequently disassembling the mechanism, and the number of disassembling the mechanism is reduced.

[0038] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A motor frame with inner and outer bearings, characterized in that, It includes: The main shaft (1) has an axial oil injection hole and an axial oil discharge hole formed by recessing from the end face inward; The first bearing assembly (2) is sleeved on the main shaft (1) and includes an outer bearing (21) and an outer bearing cover (23) located outside the outer bearing (21). The outer bearing cover (23) has a first groove (24) formed by recessing from the surface inward. The first groove (24) is adjacent to the outer bearing (21). The second bearing assembly (3) is sleeved on the main shaft (1) and includes an inner bearing (31) and an inner bearing cover (33) located outside the inner bearing (31). The inner bearing cover (33) has a second groove (34) formed by recessing from the surface inward. The second groove (34) is adjacent to the inner bearing (31). The axial oil injection hole and the axial oil discharge hole are respectively connected to the first empty groove (24) and the second empty groove (34).

2. The motor frame with inner and outer bearings according to claim 1, characterized in that, The axial oil injection hole includes a first axial oil injection hole (11) and a second axial oil injection hole (12). The first axial oil injection hole (11) is connected to the first empty groove (24), and the second axial oil injection hole (12) is connected to the second empty groove (34).

3. The motor frame with inner and outer bearings according to claim 2, characterized in that, The length of the first axial oil injection hole (11) is less than the length of the second axial oil injection hole (12).

4. The motor frame with inner and outer bearings according to claim 2, characterized in that, The main shaft (1) has a first radial oil injection hole (15) and a second radial oil injection hole (16) formed by recessing from the outer surface inward. The first radial oil injection hole (15) is connected to the first axial oil injection hole (11) and the first slot (24) respectively. The second radial oil injection hole (16) is connected to the second axial oil injection hole (12) and the second slot (34).

5. The motor frame with inner and outer bearings according to claim 1, characterized in that, The axial oil drain hole includes a first axial oil drain port (13) and a second axial oil drain hole (14). The first axial oil drain port (13) is connected to the first empty groove (24), and the second axial oil drain hole (14) is connected to the second empty groove (34).

6. The motor frame with inner and outer bearings according to claim 5, characterized in that, The length of the first axial oil drain port (13) is less than the length of the second axial oil drain hole (14).

7. The motor frame with inner and outer bearings according to claim 5, characterized in that, The main shaft (1) has a first radial oil outlet (17) and a second radial oil outlet (18) formed by recessing from the outer surface inward. The first radial oil outlet (17) is connected to the first axial oil outlet (13) and the first slot (24), and the second radial oil outlet (18) is connected to the second axial oil outlet (14) and the second slot (34).

8. The motor frame with inner and outer bearings according to claim 1, characterized in that, The first bearing assembly (2) includes an outer bearing sleeve (22), which is annular and fits onto the outer bearing (21). The inner side abuts against the outer surface of the outer bearing (21), and the outer side extends outward.

9. The motor frame with inner and outer bearings according to claim 1, characterized in that, The second bearing assembly (3) includes an inner bearing sleeve (32), which is annular and fits onto the inner bearing (31), with its inner side abutting against the inner bearing (31) and its outer side extending outward.

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