CN210137231U - Insulating oil leakage prevention structure of alternating-current variable-frequency speed-regulating brake motor - Google Patents
Insulating oil leakage prevention structure of alternating-current variable-frequency speed-regulating brake motor Download PDFInfo
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- CN210137231U CN210137231U CN201920577398.3U CN201920577398U CN210137231U CN 210137231 U CN210137231 U CN 210137231U CN 201920577398 U CN201920577398 U CN 201920577398U CN 210137231 U CN210137231 U CN 210137231U
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Abstract
The utility model relates to an exchange Variable Frequency Speed Governing (VFSG) brake motor's insulating leak protection oil structure, its characterized in that: the alternating-current variable-frequency speed-regulating brake motor comprises a slewing bearing, a bearing sleeve and an end cover, wherein a slewing shaft of the alternating-current variable-frequency speed-regulating brake motor is matched with the slewing bearing, the slewing bearing and the bearing sleeve are assembled on the end cover, and the bearing sleeve and the end cover are locked through bolts; the insulating structure is adopted under the condition of adopting a conventional bearing, so that the cost can be reduced; the bearing sleeve is locked with the end cover by a first insulating washer, an insulating sleeve and a second insulating washer, so that the bolt is ensured to be isolated from the end cover; the insulating structure has low cost and is suitable for popularization and use; by adding the tapered roller bearing, a large amount of lubricating oil can fall on one side of the tapered roller bearing when the lubricating oil flies out in the tangential direction in the rotating process, and the lubricating oil is prevented from being leaked from the other side in a large amount.
Description
Technical Field
The utility model relates to an alternating current motor insulation technical field especially relates to an exchange variable frequency speed governing brake motor's insulation system.
Background
The current waveform of the alternating-current variable-frequency speed-regulating brake motor is unstable, and the rotor can easily sense the shaft current, so that the alternating-current variable-frequency speed-regulating brake motor is generally provided with an insulation structure; the insulation structure of a general alternating current variable frequency speed regulation brake motor adopts a ceramic bearing to realize insulation, but the cost of the ceramic bearing is high; therefore, a new insulation structure needs to be developed on the alternating current variable frequency speed regulation brake motor, and insulation between the rotor and the end cover is realized under the condition of adopting a conventional bearing.
The lubricating oil is a liquid or semisolid lubricating agent which is used on various types of automobiles and mechanical equipment to reduce friction and protect machines and workpieces, and mainly plays roles in lubrication, cooling, rust prevention, cleaning, sealing, buffering and the like; the motor bearing needs to be added with some lubricating oil to lubricate the bearing in the process of high-speed rotation, and a sealing washer is indicated to be adopted in the traditional process to prevent lubricating oil from leaking out of the high-speed rotating bearing, but the oil leakage phenomenon cannot be completely prevented by the technology, particularly when the machine body vibrates greatly and the sealing washer is aged, the oil leakage phenomenon is serious, and therefore a technical scheme which is changed from the structure is needed to reduce the leakage of the lubricating oil.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an exchange Variable Frequency Speed Governing (VFSG) brake motor's insulating leak protection oil structure, can solve general AC Variable Frequency Speed Governing (VFSG) brake motor and adopt ceramic bearing insulating with high costs to and the easy problem of leaking of bearing interpolation lubricating oil.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides an exchange frequency conversion speed governing brake motor's insulating leak protection oil structure which innovation point lies in: the alternating-current variable-frequency speed-regulating brake motor comprises a slewing bearing, a bearing sleeve and an end cover, wherein a slewing shaft of the alternating-current variable-frequency speed-regulating brake motor is matched with the slewing bearing, the slewing bearing and the bearing sleeve are assembled on the end cover, and the bearing sleeve and the end cover are locked through bolts;
the rotary bearing comprises a deep groove ball bearing and a tapered roller bearing, the deep groove ball bearing and the tapered roller bearing are adjacent and are arranged in a bearing hole of a bearing sleeve, the diameters of the deep groove ball bearing and the tapered roller bearing are consistent, and a rotary shaft of the motor penetrates through the deep groove ball bearing and the tapered roller bearing and is connected with the two bearings; the two ends of a bearing hole of the bearing sleeve are respectively provided with an oil baffle plate, the outer side of the bearing sleeve is provided with an end cover, and a sealing gasket is arranged between the end cover and the bearing hole of the bearing sleeve; the end cover is provided with a through hole for the rotating shaft to pass through;
a weftless tape is arranged on the axial outer contour of the bearing sleeve, and the axial outer contour of the bearing sleeve is matched with the end cover through the weftless tape;
the radial end face of the bearing sleeve is provided with a first insulating gasket for isolating the radial end face of the bearing sleeve from the side face of the end cover;
the bearing sleeve is provided with a threaded hole matched with the bolt, and the end cover is provided with a through hole matched with the bolt; the bolt and the bearing sleeve are locked in a threaded fit mode, and an insulating sleeve isolating bolt and a through hole of the end cover are nested between the bolt and the through hole in the end cover on the outer contour of the bolt; the end part of the bolt is provided with a nut, the nut locks the bearing sleeve and the end cover through a second insulating washer, and the nut is isolated from the end cover through a second insulating washer.
Furthermore, the end cover is in a round table shape, is embedded into a bearing hole of the bearing sleeve, and is provided with an oil filling hole and an oil discharge port.
Furthermore, a groove is formed in the axial circumferential surface, matched with the end cover, of the bearing sleeve along the outer contour, and the weftless tape is arranged in the groove.
The utility model has the advantages that:
1) the utility model adopts the insulation structure under the condition of adopting the conventional bearing, thereby reducing the cost; the bearing sleeve is locked with the end cover by a first insulating washer, an insulating sleeve and a second insulating washer, so that the bolt is ensured to be isolated from the end cover; the insulation structure is low in cost, can realize insulation between the rotor and the end cover of the alternating-current variable-frequency speed-regulating brake motor under the condition of adopting the conventional slewing bearing, and is suitable for popularization and use.
2) The utility model discloses in make lubricating oil along one side that a large amount of lubricating oil can fall tapered roller bearing again when tangential direction departure in rotatory in-process through increasing tapered roller bearing, avoided lubricating oil to leak from the opposite side a large amount of.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of an insulation oil leakage prevention structure of an ac variable frequency speed-regulating brake motor of the present invention.
Detailed Description
The following examples are presented to enable those skilled in the art to more fully understand the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, the insulation oil leakage prevention structure of the ac variable frequency speed control brake motor includes a slewing bearing 1, a bearing housing 2 and an end cover 3, wherein a slewing shaft of the ac variable frequency speed control brake motor is matched with the slewing bearing 1, the slewing bearing 1 and the bearing housing 2 are assembled on the end cover 3, and the bearing housing 2 and the end cover 3 are locked by a bolt 26.
The slewing bearing 1 comprises a deep groove ball bearing 11 and a tapered roller bearing 12, the deep groove ball bearing 11 and the tapered roller bearing 12 are adjacent and are arranged in a bearing hole of the bearing sleeve 2, the hole diameters of the deep groove ball bearing 11 and the tapered roller bearing 12 are consistent, and a slewing shaft of the motor penetrates through the deep groove ball bearing 11 and the tapered roller bearing 12 and is connected with the two bearings; both ends of a bearing hole of the bearing sleeve 2 are provided with oil baffle plates 13, the outer side of the bearing sleeve is provided with an end cover 3, and a sealing gasket is arranged between the end cover 3 and the bearing hole of the bearing sleeve 2; and the end cover 3 is provided with a through hole for the rotation shaft to pass through.
A weftless tape 21 is arranged on the axial outer contour of the bearing sleeve 2, and the axial outer contour of the bearing sleeve 2 is matched with the end cover 3 through the weftless tape 21; the radial end face of the bearing sleeve 2 is provided with a first insulating gasket 22 for isolating the radial end face of the bearing sleeve 2 from the side face of the end cover 3.
A threaded hole matched with the bolt is formed in the bearing sleeve 2, and a through hole matched with the bolt 22 is formed in the end cover 3; the bolt 26 is locked with the bearing sleeve 2 through thread fit, and an insulating sleeve 23 is nested between the bolt 22 and the through hole on the end cover 3 on the outer contour of the bolt 26 to isolate the bolt 22 from the through hole of the end cover; the end of the bolt 26 is provided with a nut 24, the nut 24 locks the bearing sleeve 2 and the end cover 3 through a second insulating washer 25, and the nut 24 is isolated from the end cover 3 through a second insulating washer 25.
The end cover 3 is in a circular truncated cone shape, the end cover 3 is embedded into a bearing hole of the bearing sleeve 2, and the bearing sleeve 2 is provided with an oil filling hole 31 and an oil drain port 32.
A groove is arranged on the axial circumferential surface of the bearing sleeve 2 matched with the end cover 3 along the outer contour, and the weftless tape 21 is arranged in the groove.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides an exchange frequency conversion speed governing brake motor's insulating leak protection oil structure which characterized in that: the alternating-current variable-frequency speed-regulating brake motor comprises a slewing bearing, a bearing sleeve and an end cover, wherein a slewing shaft of the alternating-current variable-frequency speed-regulating brake motor is matched with the slewing bearing, the slewing bearing and the bearing sleeve are assembled on the end cover, and the bearing sleeve and the end cover are locked through bolts;
the rotary bearing comprises a deep groove ball bearing and a tapered roller bearing, the deep groove ball bearing and the tapered roller bearing are adjacent and are arranged in a bearing hole of a bearing sleeve, the diameters of the deep groove ball bearing and the tapered roller bearing are consistent, and a rotary shaft of the motor penetrates through the deep groove ball bearing and the tapered roller bearing and is connected with the two bearings; the two ends of a bearing hole of the bearing sleeve are respectively provided with an oil baffle plate, the outer side of the bearing sleeve is provided with an end cover, and a sealing gasket is arranged between the end cover and the bearing hole of the bearing sleeve; the end cover is provided with a through hole for the rotating shaft to pass through;
a weftless tape is arranged on the axial outer contour of the bearing sleeve, and the axial outer contour of the bearing sleeve is matched with the end cover through the weftless tape; the radial end face of the bearing sleeve is provided with a first insulating gasket for isolating the radial end face of the bearing sleeve from the side face of the end cover;
the bearing sleeve is provided with a threaded hole matched with the bolt, and the end cover is provided with a through hole matched with the bolt; the bolt and the bearing sleeve are locked in a threaded fit mode, and an insulating sleeve isolating bolt and a through hole of the end cover are nested between the bolt and the through hole in the end cover on the outer contour of the bolt; the end part of the bolt is provided with a nut, the nut locks the bearing sleeve and the end cover through a second insulating washer, and the nut is isolated from the end cover through a second insulating washer.
2. The insulation oil-leakage-proof structure of the alternating current variable frequency speed regulation brake motor according to claim 1, characterized in that: the end cover is in a round table shape, is embedded into a bearing hole of the bearing sleeve, and is provided with an oil filling hole and an oil discharge port.
3. The insulation oil-leakage-proof structure of the alternating current variable frequency speed regulation brake motor according to claim 1, characterized in that: a groove is formed in the axial circumferential surface, matched with the end cover, of the bearing sleeve along the outer contour, and the weftless tape is arranged in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920577398.3U CN210137231U (en) | 2019-04-25 | 2019-04-25 | Insulating oil leakage prevention structure of alternating-current variable-frequency speed-regulating brake motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920577398.3U CN210137231U (en) | 2019-04-25 | 2019-04-25 | Insulating oil leakage prevention structure of alternating-current variable-frequency speed-regulating brake motor |
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| Publication Number | Publication Date |
|---|---|
| CN210137231U true CN210137231U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920577398.3U Active CN210137231U (en) | 2019-04-25 | 2019-04-25 | Insulating oil leakage prevention structure of alternating-current variable-frequency speed-regulating brake motor |
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| CN (1) | CN210137231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951010A (en) * | 2019-04-25 | 2019-06-28 | 南通雄亚机电制造有限公司 | A kind of insulation leak-proof arrangement of ac variable frequency speed regulation braking motor |
| CN114499012A (en) * | 2021-12-30 | 2022-05-13 | 西安中车永电捷力风能有限公司 | Insulating end cover structure suitable for offshore wind driven generator |
-
2019
- 2019-04-25 CN CN201920577398.3U patent/CN210137231U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951010A (en) * | 2019-04-25 | 2019-06-28 | 南通雄亚机电制造有限公司 | A kind of insulation leak-proof arrangement of ac variable frequency speed regulation braking motor |
| CN114499012A (en) * | 2021-12-30 | 2022-05-13 | 西安中车永电捷力风能有限公司 | Insulating end cover structure suitable for offshore wind driven generator |
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