CN209860702U - Variable-frequency speed-regulating motor for protecting bearing from being damaged by shaft current - Google Patents
Variable-frequency speed-regulating motor for protecting bearing from being damaged by shaft current Download PDFInfo
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- CN209860702U CN209860702U CN201920920190.7U CN201920920190U CN209860702U CN 209860702 U CN209860702 U CN 209860702U CN 201920920190 U CN201920920190 U CN 201920920190U CN 209860702 U CN209860702 U CN 209860702U
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Abstract
The utility model discloses a variable frequency speed motor of protection bearing exempt from axle current injury, which comprises a base, the inside coil that is equipped with on the base, the motor shaft is installed at the coil center, the upper bearing is equipped with to the motor shaft upper end, the upper bearing periphery is provided with the insulating room of bearing, the insulating room of bearing includes the bearing housing, the peripheral cover of upper bearing has the bearing housing, the base upper end is equipped with the upper end cover, the bearing housing is installed in the upper end cover, the motor shaft lower extreme is equipped with the lower bearing, the lower bearing is installed in the lower end cover, lower end cover and base fixed connection, be fixed with the brass ring on the motor shaft axis body, the brass ring is fixed in the middle of the coil on the motor shaft and the lower bearing, brass ring one side is equipped with the carbon brush, the carbon. The utility model discloses a bearing insulation chamber makes the bearing insulating with the end cover completely, adorns the carbon brush in the middle of coil and lower bearing for axle current does not pass through upper and lower bearing, but flows in the earth through the carbon brush through the earth connection.
Description
Technical Field
The utility model relates to a buncher technical field especially relates to a frequency conversion buncher of axle current injury is avoided to protection bearing.
Background
In general, in a large motor, particularly a motor with an iron core laminated by sector punching sheets, if a magnetic field is asymmetric, shaft current is easily generated. In recent years, the small motor adopting the variable-frequency speed regulation driving device has the non-negligible shaft current, so that the bearing of the small motor is damaged too early, the reliable service life of the motor is directly influenced and reduced, and the attention of motor users and motor manufacturers is attracted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a variable frequency speed motor of protection bearing exempts from axle current injury.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a variable frequency speed motor that protection bearing avoids axle current injury, includes the base, the inside coil that is equipped with on the base, the motor shaft is installed at the coil center, the upper bearing is equipped with to the motor shaft upper end, the upper bearing periphery is provided with the insulating room of bearing, the insulating room of bearing includes the bearing housing, the peripheral cover of upper bearing has the bearing housing, the upper end cover is equipped with to the base upper end, the bearing housing is installed in the upper end cover, the motor shaft lower extreme is equipped with down the bearing, the bearing is installed in the lower extreme cover down, lower extreme cover and base fixed connection, be fixed with the brass ring on the motor shaft axis body, the brass ring is fixed in the middle of the coil on the motor shaft and the lower bearing, brass ring one side is equipped with the carbon brush, the carbon brush is installed on the carbon brush frame, the carbon.
Furthermore, insulating gaskets are respectively padded on two end faces of the bearing sleeve.
Furthermore, the excircle of the bearing sleeve is wrapped with an epoxy resin layer.
Further, the thickness of the epoxy resin layer is 1-4 mm.
Furthermore, a small cover is fixed at the upper end of the upper end cover through a fastening screw, and an insulating sleeve is sleeved on the fastening screw.
Furthermore, the upper end of the motor shaft extends out of the upper end cover, and the lower end of the motor shaft is arranged inside the lower end cover.
Has the advantages that: the utility model discloses a bearing insulation chamber makes the bearing insulating with the end cover completely, adorns the carbon brush in the middle of coil and lower bearing for axle current does not pass through upper and lower bearing, but flows in the earth through the carbon brush through the earth connection.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic structural view of the bearing insulating sleeve of fig. 1 according to the present invention;
fig. 3 is an enlarged schematic structural view of the bearing insulation chamber in fig. 1 according to the present invention.
In the figure: 1 insulating pad, 2 bearing bushes, 3 upper bearings, 4 upper end covers, 5 epoxy resin layers, 6 bases, 7 brass rings, 8 carbon brushes, 9 carbon brush holders, 10 lower bearings, 11 lower end covers, 12 motor shafts, 13 small covers and 14 coils.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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 only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-3, a variable frequency speed regulating motor for protecting a bearing from being damaged by a shaft current comprises a base 6, a coil 14 is arranged inside the base 6, a motor shaft 12 is arranged in the center of the coil 14, an upper bearing 3 is arranged at the upper end of the motor shaft 12, a bearing insulation chamber is arranged on the periphery of the upper bearing 3, the bearing insulation chamber comprises a bearing sleeve 2, the periphery of the upper bearing 3 is sleeved with the bearing sleeve 2, an upper end cover 4 is arranged at the upper end of the base 6, the bearing sleeve 2 is arranged in the upper end cover 4, a lower bearing 10 is arranged at the lower end of the motor shaft 12, the lower bearing 10 is arranged in a lower end cover 11, the lower end cover 11 is fixedly connected with the base 6, a brass ring 7 is fixed on the shaft body of the motor shaft 12, the brass ring 7 is fixed between the coil 14 on the motor shaft 12 and the lower bearing 10, the carbon brush 8 is installed on a carbon brush holder 9, and the carbon brush holder 9 is led into a grounding electrode through a grounding wire.
Example 2:
referring to fig. 1-3, a variable frequency speed regulating motor for protecting a bearing from being damaged by a shaft current comprises a base 6, a coil 14 is arranged inside the base 6, a motor shaft 12 is arranged in the center of the coil 14, an upper bearing 3 is arranged at the upper end of the motor shaft 12, a bearing insulation chamber is arranged on the periphery of the upper bearing 3, the bearing insulation chamber comprises a bearing sleeve 2, the periphery of the upper bearing 3 is sleeved with the bearing sleeve 2, an upper end cover 4 is arranged at the upper end of the base 6, the bearing sleeve 2 is arranged in the upper end cover 4, a lower bearing 10 is arranged at the lower end of the motor shaft 12, the lower bearing 10 is arranged in a lower end cover 11, the lower end cover 11 is fixedly connected with the base 6, a brass ring 7 is fixed on the shaft body of the motor shaft 12, the brass ring 7 is fixed between the coil 14 on the motor shaft 12 and the lower bearing 10, the carbon brush 8 is installed on a carbon brush holder 9, and the carbon brush holder 9 is led into a grounding electrode through a grounding wire.
And insulating gaskets 1 are respectively padded on two end faces of the bearing sleeve 2. The upper end of the upper end cover 4 is fixed with a small cover 13 through a fastening screw, and the fastening screw is sleeved with an insulating sleeve. The upper end of the motor shaft 12 extends out of the upper end cover 4, and the lower end of the motor shaft 12 is arranged in the lower end cover 11.
Example 3:
referring to fig. 1-3, a variable frequency speed regulating motor for protecting a bearing from being damaged by a shaft current comprises a base 6, a coil 14 is arranged inside the base 6, a motor shaft 12 is arranged in the center of the coil 14, an upper bearing 3 is arranged at the upper end of the motor shaft 12, a bearing insulation chamber is arranged on the periphery of the upper bearing 3, the bearing insulation chamber comprises a bearing sleeve 2, the periphery of the upper bearing 3 is sleeved with the bearing sleeve 2, an upper end cover 4 is arranged at the upper end of the base 6, the bearing sleeve 2 is arranged in the upper end cover 4, a lower bearing 10 is arranged at the lower end of the motor shaft 12, the lower bearing 10 is arranged in a lower end cover 11, the lower end cover 11 is fixedly connected with the base 6, a brass ring 7 is fixed on the shaft body of the motor shaft 12, the brass ring 7 is fixed between the coil 14 on the motor shaft 12 and the lower bearing 10, the carbon brush 8 is installed on a carbon brush holder 9, and the carbon brush holder 9 is led into a grounding electrode through a grounding wire.
And insulating gaskets 1 are respectively padded on two end faces of the bearing sleeve 2. The excircle of the bearing sleeve 2 is wrapped with an epoxy resin layer 5. The thickness of the epoxy resin layer 5 is 1 mm. The upper end of the upper end cover 4 is fixed with a small cover 13 through a fastening screw, and the fastening screw is sleeved with an insulating sleeve. The upper end of the motor shaft 12 extends out of the upper end cover 4, and the lower end of the motor shaft 12 is arranged in the lower end cover 11.
The excircle of the bearing sleeve 2 is wrapped by epoxy resin, the bearing sleeve 2 is embedded on the upper end cover 4, insulating gaskets 1 are arranged on two side pads of the bearing sleeve 2, and an insulating sleeve is added on a fastening screw of the small cover 13 to completely insulate the upper bearing 3 from the upper end cover 4, the brass ring 7 is arranged on the shaft, and the specific part is arranged between the coil 14 and the lower bearing 10, so that even if shaft current exists, the shaft current can also follow the brass ring 7, passes through the carbon brush 8, and finally is transmitted into the ground through the carbon brush holder 9 by a grounding wire. The carbon brush 8 is led into the grounding electrode through the grounding wire, so that reliable grounding is guaranteed, and shaft current does not pass through the upper bearing and the lower bearing, so that the bearings are not damaged. The bearing is completely insulated from the end cover by the bearing insulation chamber, and the carbon brush 8 is arranged between the coil 14 and the lower bearing 10, so that the shaft current does not pass through the upper and lower bearings 10, but flows into the ground through the carbon brush 8 and the grounding wire
Example 4:
referring to fig. 1-3, a variable frequency speed regulating motor for protecting a bearing from being damaged by a shaft current comprises a base 6, a coil 14 is arranged inside the base 6, a motor shaft 12 is arranged in the center of the coil 14, an upper bearing 3 is arranged at the upper end of the motor shaft 12, a bearing insulation chamber is arranged on the periphery of the upper bearing 3, the bearing insulation chamber comprises a bearing sleeve 2, the periphery of the upper bearing 3 is sleeved with the bearing sleeve 2, an upper end cover 4 is arranged at the upper end of the base 6, the bearing sleeve 2 is arranged in the upper end cover 4, a lower bearing 10 is arranged at the lower end of the motor shaft 12, the lower bearing 10 is arranged in a lower end cover 11, the lower end cover 11 is fixedly connected with the base 6, a brass ring 7 is fixed on the shaft body of the motor shaft 12, the brass ring 7 is fixed between the coil 14 on the motor shaft 12 and the lower bearing 10, the carbon brush 8 is installed on a carbon brush holder 9, and the carbon brush holder 9 is led into a grounding electrode through a grounding wire.
And insulating gaskets 1 are respectively padded on two end faces of the bearing sleeve 2. The excircle of the bearing sleeve 2 is wrapped with an epoxy resin layer 5. The thickness of the epoxy resin layer 5 is 4 mm. The upper end of the upper end cover 4 is fixed with a small cover 13 through a fastening screw, and the fastening screw is sleeved with an insulating sleeve. The upper end of the motor shaft 12 extends out of the upper end cover 4, and the lower end of the motor shaft 12 is arranged in the lower end cover 11.
The excircle of the bearing sleeve 2 is wrapped by epoxy resin, the bearing sleeve 2 is embedded on the upper end cover 4, insulating gaskets 1 are arranged on two side pads of the bearing sleeve 2, and an insulating sleeve is added on a fastening screw of the small cover 13 to completely insulate the upper bearing 3 from the upper end cover 4, the brass ring 7 is arranged on the shaft, and the specific part is arranged between the coil 14 and the lower bearing 10, so that even if shaft current exists, the shaft current can also follow the brass ring 7, passes through the carbon brush 8, and finally is transmitted into the ground through the carbon brush holder 9 by a grounding wire. The carbon brush 8 is led into the grounding electrode through the grounding wire, so that reliable grounding is guaranteed, and shaft current does not pass through the upper bearing and the lower bearing, so that the bearings are not damaged. The bearings are completely insulated from the end caps by the bearing insulation chamber, and the carbon brushes 8 are installed between the coil 14 and the lower bearing 10, so that the shaft current does not pass through the upper and lower bearings 10, but flows into the ground through the carbon brushes 8 via the ground wire.
Example 5:
referring to fig. 1-3, a variable frequency speed regulating motor for protecting a bearing from being damaged by a shaft current comprises a base 6, a coil 14 is arranged inside the base 6, a motor shaft 12 is arranged in the center of the coil 14, an upper bearing 3 is arranged at the upper end of the motor shaft 12, a bearing insulation chamber is arranged on the periphery of the upper bearing 3, the bearing insulation chamber comprises a bearing sleeve 2, the periphery of the upper bearing 3 is sleeved with the bearing sleeve 2, an upper end cover 4 is arranged at the upper end of the base 6, the bearing sleeve 2 is arranged in the upper end cover 4, a lower bearing 10 is arranged at the lower end of the motor shaft 12, the lower bearing 10 is arranged in a lower end cover 11, the lower end cover 11 is fixedly connected with the base 6, a brass ring 7 is fixed on the shaft body of the motor shaft 12, the brass ring 7 is fixed between the coil 14 on the motor shaft 12 and the lower bearing 10, the carbon brush 8 is installed on a carbon brush holder 9, and the carbon brush holder 9 is led into a grounding electrode through a grounding wire.
And insulating gaskets 1 are respectively padded on two end faces of the bearing sleeve 2. The excircle of the bearing sleeve 2 is wrapped with an epoxy resin layer 5. The thickness of the epoxy resin layer 5 is 2.5 mm. The upper end of the upper end cover 4 is fixed with a small cover 13 through a fastening screw, and the fastening screw is sleeved with an insulating sleeve. The upper end of the motor shaft 12 extends out of the upper end cover 4, and the lower end of the motor shaft 12 is arranged in the lower end cover 11.
The excircle of the bearing sleeve 2 is wrapped by epoxy resin, the bearing sleeve 2 is embedded on the upper end cover 4, insulating gaskets 1 are arranged on two side pads of the bearing sleeve 2, and an insulating sleeve is added on a fastening screw of the small cover 13 to completely insulate the upper bearing 3 from the upper end cover 4, the brass ring 7 is arranged on the shaft, and the specific part is arranged between the coil 14 and the lower bearing 10, so that even if shaft current exists, the shaft current can also follow the brass ring 7, passes through the carbon brush 8, and finally is transmitted into the ground through the carbon brush holder 9 by a grounding wire. The carbon brush 8 is led into the grounding electrode through the grounding wire, so that reliable grounding is guaranteed, and shaft current does not pass through the upper bearing and the lower bearing, so that the bearings are not damaged. The bearings are completely insulated from the end caps by the bearing insulation chamber, and the carbon brushes 8 are installed between the coil 14 and the lower bearing 10, so that the shaft current does not pass through the upper and lower bearings 10, but flows into the ground through the carbon brushes 8 via the ground wire.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a variable frequency speed motor that protection bearing avoids axle current injury, a serial communication port, which comprises a base, the inside coil that is equipped with on the base, the motor shaft is installed at the coil center, the upper bearing is equipped with to the motor shaft upper end, the upper bearing periphery is provided with the insulating room of bearing, the insulating room of bearing includes the bearing housing, the peripheral cover of upper bearing has the bearing housing, the upper end cover is equipped with to the base upper end, the bearing housing is installed in the upper end cover, the motor shaft lower extreme is equipped with down the bearing, the lower bearing is installed in the lower extreme, lower extreme and base fixed connection, be fixed with the brass ring on the motor shaft axis body, the brass ring is fixed in the middle of the coil on the motor shaft and lower bearing, brass ring one side is equipped with the carbon brush, the carbon brush is installed on the carbon brush frame, the carbon brush.
2. The variable frequency speed motor for protecting a bearing from shaft current according to claim 1, wherein insulating gaskets are padded on two end faces of the bearing sleeve.
3. The variable frequency speed motor of claim 1, wherein the bearing sleeve is coated with an epoxy layer on the outer circumference.
4. The variable frequency speed motor for protecting a bearing from shaft current according to claim 3, wherein the thickness of the epoxy resin layer is 1-4 mm.
5. The variable frequency speed regulating motor for protecting a bearing from being damaged by shaft current according to claim 1, wherein a small cover is fixed at the upper end of the upper end cover through a fastening screw, and the fastening screw is sleeved with an insulating sleeve.
6. The variable frequency speed motor for protecting a bearing from shaft current according to claim 1, wherein the upper end of the motor shaft extends out of the upper end cover, and the lower end of the motor shaft is arranged inside the lower end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920920190.7U CN209860702U (en) | 2019-06-19 | 2019-06-19 | Variable-frequency speed-regulating motor for protecting bearing from being damaged by shaft current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920920190.7U CN209860702U (en) | 2019-06-19 | 2019-06-19 | Variable-frequency speed-regulating motor for protecting bearing from being damaged by shaft current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209860702U true CN209860702U (en) | 2019-12-27 |
Family
ID=68942287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920920190.7U Active CN209860702U (en) | 2019-06-19 | 2019-06-19 | Variable-frequency speed-regulating motor for protecting bearing from being damaged by shaft current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209860702U (en) |
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2019
- 2019-06-19 CN CN201920920190.7U patent/CN209860702U/en active Active
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