Plug-in type rotor

Abstract

The utility model relates to a plug-in type rotor which is not only better in applicability, but also capable of improving production efficiency, good in dust prevention and sealing performance, and good in coaxiality, and is characterized in that a front shaft extension section is arranged on one side of a mounting shaft section in a rotor shaft, and a rear shaft extension section is arranged on the other side of the mounting shaft section; the diameter of the mounting shaft section is matched with the diameter of a central through hole in the rotor iron core; a first bearing blocking section is arranged on the other side of the front shaft extension section, the symmetrical center line of the first bearing blocking section coincides with the symmetrical center line of the front shaft extension section, the diameter of the first bearing blocking section is smaller than that of the front shaft extension section, and a gear inserting shaft mounting hole is formed in the outer end face of the first bearing blocking section. A dismounting clamping groove and a bearing clamping spring groove are formed in the outer circle face of the first bearing blocking section, and the dismounting clamping groove is located on the outer side of the bearing clamping spring groove. The plug-in type rotor has the advantages that: 1, the plug-in type rotor not only has better applicability, but also can improve the production efficiency; and secondly, the plug-in type rotor not only is dustproof and good in sealing performance, but also is good in coaxiality.

Description

Technical Field

[0001] The utility model belongs to the field of cast aluminum rotors, and particularly relates to a plug-in rotor. Background Technique

[0002] The existing cast aluminum rotor, such as CN 207459851 U, with the name "A cast aluminum rotor of a motor", includes a core composed of stacked silicon steel sheets, cast aluminum bars, and cast aluminum rings. A plurality of closed slots are symmetrically arranged on the silicon steel sheets. The cast aluminum bars penetrate through the closed slots. The cast aluminum rings are located on both sides of the silicon steel sheets. The two ends of the cast aluminum bars are connected to the conductive rings. A high-resistance coating is provided between the cast aluminum bars and the closed slots. The thickness range of the high-resistance coating is between 0.04 mm and 0.08 mm. The advantage of this kind of cast aluminum rotor of the motor is that it can effectively reduce the additional load loss. However, this kind of cast aluminum rotor of the motor also has the following deficiencies: First, since the diameter of the front end of the rotor shaft of this kind of cast aluminum rotor of the motor is constant, only one type of gear with a corresponding inner hole size can be installed at the front end of the rotor shaft, that is, the applicability of this kind of cast aluminum rotor of the motor is relatively poor. Second, since only one of the brake, the fan blade, and the encoder can be installed on the tail shaft of the rotor shaft of this kind of cast aluminum rotor of the motor according to needs, the applicability of this kind of cast aluminum rotor of the motor is relatively poor. Content of the Utility Model

[0003] Design Purpose: To avoid the deficiencies in the background technique, design a plug-in rotor that not only has better applicability, but also can improve production efficiency, and at the same time has good dust prevention, sealing, and coaxiality.

[0004] Design Scheme: To achieve the above design purpose.

[0005] 1. On one side of the installation shaft section in the rotor shaft, there is a front shaft extension section, and on the other side of the installation shaft end, there is a rear shaft extension section. The symmetry centerline of the installation shaft section coincides with the symmetry centerline of the front shaft extension section, and the symmetry centerline of the installation shaft section coincides with the symmetry centerline of the rear shaft extension section. The diameter of the installation shaft section matches the diameter of the central through-hole in the rotor core. The diameter of the front shaft extension section is larger than the diameter of the installation shaft section, and the diameter of the rear shaft extension section matches the diameter of the installation shaft section. On the other side of the front shaft extension section, there is a first bearing retaining section, and the symmetry centerline of the first bearing retaining section coincides with the symmetry centerline of the front shaft extension section. The diameter of the first bearing retaining section is smaller than the diameter of the front shaft extension section, and a gear insertion shaft installation hole is opened on the outer end face of the first bearing retaining section. The design that there are disassembly and assembly positioning grooves and bearing circlip grooves on the outer cylindrical surface of the first bearing retaining section, and the disassembly and assembly positioning grooves are located outside the bearing circlip grooves, is one of the technical features of the present utility model. The purpose of such design is as follows: On one side of the installation shaft section in the rotor shaft, there is a front shaft extension section, and on the other side of the installation shaft end, there is a rear shaft extension section. The symmetry centerline of the installation shaft section coincides with the symmetry centerline of the front shaft extension section, and the symmetry centerline of the installation shaft section coincides with the symmetry centerline of the rear shaft extension section. The diameter of the installation shaft section matches the diameter of the central through-hole in the rotor core. The diameter of the front shaft extension section is larger than the diameter of the installation shaft section, and the diameter of the rear shaft extension section matches the diameter of the installation shaft section. On the other side of the front shaft extension section, there is a first bearing retaining section, and the symmetry centerline of the first bearing retaining section coincides with the symmetry centerline of the front shaft extension section. The diameter of the first bearing retaining section is smaller than the diameter of the front shaft extension section, and a gear insertion shaft installation hole is opened on the outer end face of the first bearing retaining section. There are disassembly and assembly positioning grooves and bearing circlip grooves on the outer cylindrical surface of the first bearing retaining section, and the disassembly and assembly positioning grooves are located outside the bearing circlip grooves. The setting of the gear insertion shaft installation hole enables different types of gear insertion shafts to be installed on a plug-in rotor through interference plug-in fit (the diameter of the gear insertion shaft is slightly larger than the diameter of the gear insertion shaft installation hole), which improves the applicability of a plug-in rotor, thus meeting the selection requirements of different customers, meeting the standardization requirements, and at the same time reducing the production management cost. The setting of the disassembly and assembly positioning grooves on the first bearing retaining section is used for exerting force during disassembly and assembly work, thus facilitating the installation and disassembly of the gear insertion shaft. On the outer cylindrical surface of the rotor core, there are multiple grooves arranged along the length direction of the rotor core. The cast-aluminum rotor bars are integrally formed by casting aluminum on the rotor core. Multiple bars in the cast-aluminum rotor bars are cast and formed in the corresponding grooves, and two end rings in the cast-aluminum rotor bars are cast and formed on the corresponding end faces of the rotor core. On the outer end face of the end ring, there are fan blades and balance columns, which can not only improve the production efficiency of a plug-in rotor, but also effectively reduce the load additional loss of a plug-in rotor.

[0006] 2. On the other side of the rear shaft extension section, there is a second bearing retaining section, and the symmetry center line of the second bearing retaining section coincides with that of the rear shaft extension section. The diameter of the second bearing retaining section is smaller than that of the rear shaft extension section, and a dust ring limiting groove is provided on the outer cylindrical surface of the second bearing retaining section. This is the second technical feature of the present utility model. The purpose of such a design is as follows: on the other side of the rear shaft extension section, there is a second bearing retaining section, and the symmetry center line of the second bearing retaining section coincides with that of the rear shaft extension section. The diameter of the second bearing retaining section is smaller than that of the rear shaft extension section, and a dust ring limiting groove is provided on the outer cylindrical surface of the second bearing retaining section. With the setting of the dust ring limiting groove, after installing a dust ring on the dust ring limiting groove, it can not only effectively prevent the axial movement of the dust ring, but also enhance the dust prevention and sealing effects.

[0007] 3. On the other side of the second bearing retaining section, there is a tail shaft section, and the symmetry center line of the tail shaft section coincides with that of the second bearing retaining section. The diameter of the tail shaft section is smaller than that of the second bearing retaining section, and an encoder plug-in shaft mounting hole is provided on the outer end face of the tail shaft section. This is the third technical feature of the present utility model. The purpose of such a design is as follows: on the other side of the second bearing retaining section, there is a tail shaft section, and the symmetry center line of the tail shaft section coincides with that of the second bearing retaining section. The diameter of the tail shaft section is smaller than that of the second bearing retaining section, and an encoder plug-in shaft mounting hole is provided on the outer end face of the tail shaft section. With the setting of the tail shaft section and the encoder plug-in shaft mounting hole on the tail shaft section, users can install a brake, or a fan blade, or an encoder, or a brake and an encoder, or a fan blade and an encoder on the tail shaft section according to needs. In this way, the applicability of a plug-in rotor is improved, so as to meet the selection requirements of different customers, meet the standardization requirements, and at the same time reduce the production management cost.

[0008] 4. On one side of the outer cylindrical surface of the tail shaft section, there is a keyway, and a plurality of card slots are also provided on the outer cylindrical surface of the tail shaft section. This is the fourth technical feature of the present utility model. The purpose of such a design is as follows: on one side of the outer cylindrical surface of the tail shaft section, there is a keyway, and a plurality of card slots are also provided on the outer cylindrical surface of the tail shaft section. In this way, different models of brakes or fan blades can be installed on the tail shaft section, thereby further improving the applicability of a plug-in rotor.

[0009] 5. The design that the installation shaft section, the front shaft extension section, the rear shaft extension section, the first bearing retaining section, the second bearing retaining section, and the tail shaft section are machined by turning from the same round shaft is the fifth technical feature of the present utility model. The purpose of such a design is as follows: the installation shaft section, the front shaft extension section, the rear shaft extension section, the first bearing retaining section, the second bearing retaining section, and the tail shaft section are machined by turning from the same round shaft. In this way, the coaxiality of the rotor shaft is good, thus improving the use effect of a plug-in rotor.

[0010] Technical solution: A plug-in rotor includes a motor rotor body composed of a rotor shaft, a rotor core, and cast aluminum rotor bars. On one side of the installation shaft section in the rotor shaft, there is a front shaft extension section, and on the other side of the installation shaft end, there is a rear shaft extension section. The symmetry center line of the installation shaft section coincides with the symmetry center line of the front shaft extension section, and the symmetry center line of the installation shaft section coincides with the symmetry center line of the rear shaft extension section. The diameter of the installation shaft section matches the diameter of the central through hole in the rotor core. The diameter of the front shaft extension section is larger than the diameter of the installation shaft section, and the diameter of the rear shaft extension section matches the diameter of the installation shaft section. On the other side of the front shaft extension section, there is a first bearing retaining section, and the symmetry center line of the first bearing retaining section coincides with the symmetry center line of the front shaft extension section. The diameter of the first bearing retaining section is smaller than the diameter of the front shaft extension section, and a gear plug-in shaft installation hole is opened on the outer end face of the first bearing retaining section. On the outer cylindrical surface of the first bearing retaining section, there are disassembly and installation clamping grooves and bearing circlip grooves, and the disassembly and installation clamping grooves are located outside the bearing circlip grooves.

[0011] Compared with the background technology, the utility model has the following advantages: First, a plug-in rotor not only has better applicability but also can improve production efficiency; second, a plug-in rotor not only has good dust prevention and sealing performance but also has good coaxiality. Description of the drawings

[0012] Figure 1 It is a three-dimensional structure schematic diagram of a plug-in rotor.

[0013] Figure 2 It is a three-dimensional structure schematic diagram of the rotor shaft in a plug-in rotor.

[0014] Figure 3 It is a three-dimensional structure schematic diagram of the rotor core in a plug-in rotor.

[0015] Figure 4 It is a three-dimensional structure schematic diagram of the cast aluminum rotor bars in a plug-in rotor.

[0016] Figure 5 It is a three-dimensional modeling diagram of a plug-in rotor. Detailed implementation manners

[0017] Example 1: Refer to the attached Figures 1-5。A plug-in rotor includes a motor rotor body 1 composed of a rotor shaft 2, a rotor core 3, and cast aluminum rotor bars 4. On one side of the mounting shaft section 21 in the rotor shaft 2, there is a front shaft extension section 22, and on the other side of the mounting shaft end 21, there is a rear shaft extension section 23. The symmetric center line of the mounting shaft section 21 coincides with the symmetric center line of the front shaft extension section 22, and the symmetric center line of the mounting shaft section 21 coincides with the symmetric center line of the rear shaft extension section 23. The diameter of the mounting shaft section 21 matches the diameter of the central through hole 31 in the rotor core 3. The diameter of the front shaft extension section 22 is greater than the diameter of the mounting shaft section 21, and the diameter of the rear shaft extension section 23 matches the diameter of the mounting shaft section 21. On the other side of the front shaft extension section 22, there is a first bearing retaining section 24, and the symmetric center line of the first bearing retaining section 24 coincides with the symmetric center line of the front shaft extension section 22. The diameter of the first bearing retaining section 24 is smaller than the diameter of the front shaft extension section 22, and a gear plug-in shaft mounting hole 241 is opened on the outer end face of the first bearing retaining section 24. On the outer cylindrical surface of the first bearing retaining section 24, there are a disassembly and assembly positioning groove 242 and a bearing circlip groove 243, and the disassembly and assembly positioning groove 242 is located outside the bearing circlip groove 243. The symmetric center line of the gear plug-in shaft mounting hole 241 coincides with the symmetric center line of the first bearing retaining section 24.

[0018] On the other side of the rear shaft extension section 23, there is a second bearing retaining section 25, and the symmetric center line of the second bearing retaining section 25 coincides with the symmetric center line of the rear shaft extension section 23. The diameter of the second bearing retaining section 25 is smaller than the diameter of the rear shaft extension section 23, and a dust ring limiting groove 251 is provided on the outer cylindrical surface of the second bearing retaining section 25. On the other side of the second bearing retaining section 25, there is a tail shaft section 26, and the symmetric center line of the tail shaft section 26 coincides with the symmetric center line of the second bearing retaining section 25. The diameter of the tail shaft section 26 is smaller than the diameter of the second bearing retaining section 25, and an encoder plug-in shaft mounting hole 261 is opened on the outer end face of the tail shaft section 26. The symmetric center line of the encoder plug-in shaft mounting hole 261 coincides with the symmetric center line of the second bearing retaining section 25. On one side of the outer cylindrical surface of the tail shaft section 26, there is a keyway 262, and there are also a plurality of card slots 263 on the outer cylindrical surface of the tail shaft section 26. The mounting shaft section 21, the front shaft extension section 22, the rear shaft extension section 23, the first bearing retaining section 24, the second bearing retaining section 25, and the tail shaft section 26 are machined by turning from the same round shaft.

[0019] On the outer cylindrical surface of the rotor core 3, there are multiple grooves 32 arranged along the length direction of the rotor core 3. The cast aluminum rotor bars 4 are integrally formed by casting aluminum on the rotor core 3. A plurality of bars 41 in the cast aluminum rotor bars 4 are cast and formed in the corresponding grooves 32, and two end rings 42 in the cast aluminum rotor bars 4 are cast and formed on the corresponding end faces of the rotor core 3. On the outer end face of the end ring 42, there are a wind vane plate 421 and a balance column 422. Figure 2The dashed line A in it does not exist in the actual product, and the dashed line is marked to better reflect the mounting shaft section 21 and the rear shaft extension section 23.

[0020] This plug-in rotor product can be used in reduction motors, air compressor motors, etc. This plug-in rotor can not only meet the standardized requirements in the same series of motors, but also allow customers to freely select models under different working conditions, reduce the materials of the motor and the costs of other molds, reduce the production management costs, and improve the market competitiveness of the product.

[0021] It should be understood that: Although the above embodiments have made a relatively detailed written description of the design concept of the present invention, these written descriptions are only simple written descriptions of the design concept of the present invention, rather than limitations on the design concept of the present invention. Any combination, addition or modification that does not exceed the design concept of the present invention falls within the protection scope of the present invention.

Claims

1. A plug-in rotor, comprising a motor rotor body (1) consisting of a rotor shaft (2), a rotor core (3) and cast aluminum rotor bars (4), characterized in that: A front shaft extension section (22) is provided on one side of the installation shaft section (21) in the rotor shaft (2), and a rear shaft extension section (23) is provided on the other side of the installation shaft section (21); a symmetric center line of the installation shaft section (21) coincides with a symmetric center line of the front shaft extension section (22), and a symmetric center line of the installation shaft section (21) coincides with a symmetric center line of the rear shaft extension section (23); a diameter of the installation shaft section (21) matches a diameter of a central through hole (31) in the rotor core (3); a diameter of the front shaft extension section (22) is larger than a diameter of the installation shaft section (21), and a diameter of the rear shaft extension section (23) is equal to or smaller than a diameter of the installation shaft section (21). The diameter of the mounting shaft section (21) matches; a first bearing stop section (24) is provided on the other side of the front axle extension section (22), and the symmetry center line of the first bearing stop section (24) coincides with the symmetry center line of the front axle extension section (22); the diameter of the first bearing stop section (24) is smaller than the diameter of the front axle extension section (22), and a gear plug-in shaft mounting hole (241) is provided on the outer end surface of the first bearing stop section (24); a disassembly and assembly clamping groove (242) and a bearing retaining ring groove (243) are provided on the outer circumferential surface of the first bearing stop section (24), and the disassembly and assembly clamping groove (242) is located outside the bearing retaining ring groove (243).

2. A plug-in rotor according to claim 1, characterized in that: A second bearing stop section (25) is provided on the other side of the rear axle extension section (23), and the symmetry centerline of the second bearing stop section (25) coincides with the symmetry centerline of the rear axle extension section (23); the diameter of the second bearing stop section (25) is smaller than the diameter of the rear axle extension section (23), and a dust ring limiting groove (251) is provided on the outer circumferential surface of the second bearing stop section (25).

3. A plug-in rotor according to claim 2, characterized in that: A tail shaft section (26) is provided on the other side of the second bearing stop section (25), and the symmetry centerline of the tail shaft section (26) coincides with the symmetry centerline of the second bearing stop section (25); the diameter of the tail shaft section (26) is smaller than the diameter of the second bearing stop section (25); and an encoder plug-in shaft mounting hole (261) is provided on the outer end surface of the tail shaft section (26).

4. A plug-in rotor according to claim 3, characterized in that: A keyway (262) is provided on one side of the outer circumferential surface of the tail shaft section (26), and a plurality of clamping grooves (263) are also provided on the outer circumferential surface of the tail shaft section (26).

5. The plug-in rotor according to claim 1, characterized in that: The mounting shaft section (21), the front shaft extension section (22), the rear shaft extension section (23), the first bearing stop section (24), the second bearing stop section (25) and the tail shaft section (26) are formed by turning a same circular shaft.

6. A plug-in rotor according to claim 1, characterized in that: The outer circumferential surface of the rotor core (3) is provided with a plurality of grooves (32), and the plurality of grooves (32) are arranged along the length direction of the rotor core (3); the cast aluminum rotor guide bar (4) is integrally formed by casting aluminum on the rotor core (3); a plurality of guide bars (41) in the cast aluminum rotor guide bar (4) are cast aluminum-formed in corresponding grooves (32); and two end rings (42) in the cast aluminum rotor guide bar (4) are cast aluminum-formed on corresponding end surfaces of the rotor core (3).

7. A plug-in rotor according to claim 6, characterized in that: The outer end surface of the end ring (42) is provided with a wind blade plate (421) and a balance column (422).

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