CN109245378B - High-rotation-speed synchronous motor magnetic pole lead fixing structure - Google Patents
High-rotation-speed synchronous motor magnetic pole lead fixing structure Download PDFInfo
- Publication number
- CN109245378B CN109245378B CN201811421015.XA CN201811421015A CN109245378B CN 109245378 B CN109245378 B CN 109245378B CN 201811421015 A CN201811421015 A CN 201811421015A CN 109245378 B CN109245378 B CN 109245378B
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- China
- Prior art keywords
- conductive
- magnetic pole
- conductive screw
- pole lead
- screw rod
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Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
- H02K3/51—Fastening of winding heads, equalising connectors, or connections thereto applicable to rotors only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention relates to a high-rotation-speed synchronous motor magnetic pole lead fixing structure, wherein a conductive screw rod 3 is connected with a conductive rod assembly 7 arranged in an axial through hole of a rotating shaft 6 through a conical thread 11, the conductive screw rod 3 is fixed in a radial hole of the rotating shaft 6 through a thread sleeve 4 and an insulating sleeve 5, a rotor magnetic pole lead 1 is fixed on the conductive screw rod 3 through a locking nut 2, and the locking nut 2 is electrically connected with the rotor magnetic pole lead 1. The invention solves the potential safety hazard in the prior art caused by insufficient depth of screwing the conductive screw into the conductive rod, solves the problem of poor contact possibly caused by the conduction of the copper gasket in the prior structure, and solves the potential safety hazard generated by the fact that the conductive rod in the prior art cannot bear larger centrifugal force when the motor operates at high speed. The invention has the advantages of simple installation, high safety, reduced cost, improved raw material utilization rate and good use effect. The magnetic pole lead fixing structure has the advantages of simple structure, reasonable design, good conductive and insulating effects, capability of bearing larger centrifugal force and convenience in disassembly, assembly and maintenance.
Description
Technical Field
The invention relates to a pole lead fixing structure of a high-rotation-speed synchronous motor.
Background
In the known technology, the fixation of the pole lead of the rotor of the synchronous motor always consists of a conductive screw, an insulating layer, a copper gasket, an insulating gasket, a locking mechanism and the like. Such structures typically suffer from several drawbacks: 1) The structure of the conductive screw rod screwed into the conductive rod is complex, so that the operation is inconvenient, and the disassembly, inspection and maintenance are inconvenient; 2) The connection part of the conductive screw rod and the conductive rod bears the centrifugal force of the conductive screw rod and the magnetic pole lead, and the structure has potential safety hazard in strength; 3) The contact of magnetic pole lead wire and conductive screw rod is conducted through the copper gasket, and the poor contact is easy for the conduction effect is not good.
Disclosure of Invention
The invention provides a high-rotation-speed synchronous motor rotor magnetic pole lead fixing structure which is simple in structure, novel and reasonable in design and good in using effect, solves the problems of inconvenience in disassembly and inspection maintenance, potential safety hazards and the like in the prior art, reduces cost and improves raw material utilization rate.
The technical scheme of the invention is as follows: a high-rotation-speed synchronous motor rotor magnetic pole lead fixing structure is characterized in that a conductive screw (3) is connected with a conductive rod assembly (7) arranged in an axial through hole of a rotating shaft (6) through a conical thread (11), the conductive screw (3) is fixed in a radial hole of the rotating shaft (6) through a thread sleeve (4) and an insulating sleeve (5), a rotor magnetic pole lead (1) is fixed on the conductive screw (3) through a locking nut (2), and the locking nut (2) is electrically connected with the rotor magnetic pole lead (1).
The conductive screw (3) is wrapped with an insulating layer (8); the conductive screw rod (3) is respectively and electrically connected with the conductive rod assembly (7) and the rotor magnetic pole lead wire (1); the conductive screw (3) is provided with: the external hexagonal (9), the common thread (10) and the conical thread (11).
The insulating sleeve (5) is used for pressing the insulating sleeve (5) on the conductive screw rod (3) through the threaded sleeve (4), and the threaded sleeve (4) is assembled with the rotating shaft (6).
The working principle of the invention is as follows:
in the high-speed rotation process of the motor rotor, the parts on the rotor generate great centrifugal force, so that the parts on the rotor are required to have enough strength; when the motor runs, the rotor exciting winding needs to be supplied with power, which requires that the conductive mechanism has good conductivity; meanwhile, the rotor conductive part needs to have reliable insulation performance with the rotating shaft. The conductive screw is tightly pressed through the threaded sleeve to bear centrifugal force generated by the rotor magnetic pole lead fixing structure in the running process of the motor; the rotor magnetic pole lead wire is assembled and connected with the conductive rod through the conical threads on the conductive screw rod, and is pressed on the conductive screw rod through the locking nut, so that all conductive parts are in good contact, and the rotor magnetic pole lead wire fixing structure has good conductive performance; the rotor magnetic pole lead fixing structure and the rotating shaft have a perfect insulation system through the insulation layer and the insulation sleeve which are wrapped on the conductive screw; the conductive screw is convenient to install due to the outer hexagon structure on the conductive screw.
The invention has the beneficial effects that:
the outer hexagon (9) is used for installing the conductive screw rod (3) on the conductive rod assembly (7), the common thread (10) is used for fixing the lock nut (2), and the conical thread (11) is used for connecting the conductive screw rod (3) with the conductive rod assembly (7). The insulating sleeve (5) is used for pressing the insulating sleeve (5) on the conductive screw rod (3) through the threaded sleeve (4), and the threaded sleeve (4) is assembled with the rotating shaft (6).
The invention has advanced and reasonable structural design and easy installation, the conductive screw and the rotating shaft are completely isolated by the insulating material, the excellent insulating effect can be achieved, the potential safety hazard caused by insufficient assembly depth of the conductive screw possibly screwed into the conductive rod in the existing structure is eliminated, the problem that the screw thread of the conductive rod assembly cannot bear larger centrifugal force only is solved, the safety of the rotating part of the rotor is improved, the structure is simple to install and operate, the installation time is saved, the material is saved, and the use effect is good.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic diagram of a conductive screw structure.
The specific embodiment is as follows:
as shown in fig. 1, a high-rotation-speed synchronous motor rotor magnetic pole lead fixing structure is characterized in that: the conductive screw rod 3 is connected with a conductive rod assembly 7 arranged in an axial through hole of the rotating shaft 6 through a conical thread 11, the conductive screw rod 3 is fixed in a radial hole of the rotating shaft 6 through a thread sleeve 4 and an insulating sleeve 5, the rotor magnetic pole lead 1 is fixed on the conductive screw rod 3 through a locking nut 2, and the locking nut 2 is electrically connected with the rotor magnetic pole lead 1. The conductive screw 3 is wrapped with an insulating layer 8; the conductive screw rod 3 is respectively and electrically connected with the conductive rod assembly 7 and the rotor magnetic pole lead wire 1; as shown in fig. 2, the conductive screw 3 is provided with: external hexagonal 9, common threads 10 and conical threads 11. The insulating sleeve 5 is pressed on the conductive screw rod 3 through the threaded sleeve 4, and the threaded sleeve 4 is assembled with the rotating shaft 6.
The invention realizes mechanical combination and electrical communication, and because the middle section of the conductive screw is provided with the outer hexagon structure, the conductive screw is convenient to screw into the conductive rod assembly, and the joint thread of the conductive screw and the conductive rod assembly in the rotor is a conical thread, the sufficient screwing depth is ensured during screwing, and the problems of insufficient screwing depth and poor contact of conductive parts possibly occurring in the conventional structure are solved.
The invention bears the centrifugal force of the conductive screw rod and parts arranged on the conductive screw rod through the threaded connection between the threaded sleeve and the rotating shaft, thereby effectively protecting the threads between the conductive screw rod and the conductive rod assembly; the insulating layer outside the conductive screw rod and the insulating sleeve form an insulating structure of the conductive screw rod together, so that the conductive screw rod is completely and electrically isolated from the rotating shaft, the insulating performance of the structure is ensured, and the risk that an insulating system fault possibly occurs in a conventional structure is solved.
The invention solves the potential safety hazards of machinery and electricity in the prior art, the screw screwing depth is easy to control, the conductivity of the contact surface is good, the better insulating effect is realized, the larger centrifugal force can be born, and the installation simplicity is ensured. The invention has the advantages of high utilization rate of raw materials, few parts to be processed, simple and convenient operation, effective reduction of processing and installation costs, ensured safe operation and easy popularization and use.
The invention is not limited to the specific structural forms described above, but rather, many variations can be made by those skilled in the art to which the invention pertains, and any equivalent or similar changes to the invention are intended to be encompassed within the scope of the claims of the present invention.
Claims (1)
1. A high-rotation-speed synchronous motor rotor magnetic pole lead fixing structure is characterized in that: the conductive screw (3) is connected with a conductive rod assembly (7) arranged in an axial through hole of the rotating shaft (6) through a conical thread (11), the conductive screw (3) is fixed in a radial hole of the rotating shaft (6) through a thread sleeve (4) and an insulating sleeve (5), the rotor magnetic pole lead (1) is fixed on the conductive screw (3) through a lock nut (2), the lock nut (2) is electrically connected with the rotor magnetic pole lead (1), and the conductive screw (3) wraps the insulating layer (8); the conductive screw rod (3) is respectively and electrically connected with the conductive rod assembly (7) and the rotor magnetic pole lead wire (1); the conductive screw (3) is provided with: the insulation sleeve (5) is pressed on the conductive screw rod (3) through the thread sleeve (4), the thread sleeve (4) is assembled with the rotating shaft (6), the outer hexagon (9) is located in the middle section of the conductive screw rod (3) and used for installing the conductive screw rod (3) on the conductive rod (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421015.XA CN109245378B (en) | 2018-11-27 | 2018-11-27 | High-rotation-speed synchronous motor magnetic pole lead fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421015.XA CN109245378B (en) | 2018-11-27 | 2018-11-27 | High-rotation-speed synchronous motor magnetic pole lead fixing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109245378A CN109245378A (en) | 2019-01-18 |
| CN109245378B true CN109245378B (en) | 2024-04-05 |
Family
ID=65073533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811421015.XA Active CN109245378B (en) | 2018-11-27 | 2018-11-27 | High-rotation-speed synchronous motor magnetic pole lead fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109245378B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051683Y (en) * | 2007-06-06 | 2008-04-23 | 上海汽轮发电机有限公司 | Radial conductive screw locking structure for generator rotor |
| CN203608038U (en) * | 2013-11-29 | 2014-05-21 | 南阳防爆集团股份有限公司 | Installation structure of conductive screw of static excitation generator |
| CN204271416U (en) * | 2014-12-05 | 2015-04-15 | 东方电气集团东方电机有限公司 | A kind of collector ring of generator current equalizer |
| CN205092685U (en) * | 2015-10-24 | 2016-03-16 | 卧龙电气南阳防爆集团股份有限公司 | Generator rotor magnetic pole lead fixed structure |
| CN207134905U (en) * | 2017-09-15 | 2018-03-23 | 新誉轨道交通科技有限公司 | A kind of rotor lead assembling mechanism and electric machine structure |
| CN209233603U (en) * | 2018-11-27 | 2019-08-09 | 哈尔滨电气动力装备有限公司 | High revolving speed synchronous motor field leads fixed structure |
-
2018
- 2018-11-27 CN CN201811421015.XA patent/CN109245378B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051683Y (en) * | 2007-06-06 | 2008-04-23 | 上海汽轮发电机有限公司 | Radial conductive screw locking structure for generator rotor |
| CN203608038U (en) * | 2013-11-29 | 2014-05-21 | 南阳防爆集团股份有限公司 | Installation structure of conductive screw of static excitation generator |
| CN204271416U (en) * | 2014-12-05 | 2015-04-15 | 东方电气集团东方电机有限公司 | A kind of collector ring of generator current equalizer |
| CN205092685U (en) * | 2015-10-24 | 2016-03-16 | 卧龙电气南阳防爆集团股份有限公司 | Generator rotor magnetic pole lead fixed structure |
| CN207134905U (en) * | 2017-09-15 | 2018-03-23 | 新誉轨道交通科技有限公司 | A kind of rotor lead assembling mechanism and electric machine structure |
| CN209233603U (en) * | 2018-11-27 | 2019-08-09 | 哈尔滨电气动力装备有限公司 | High revolving speed synchronous motor field leads fixed structure |
Non-Patent Citations (1)
| Title |
|---|
| 东方-日立型600MW汽轮发电机转子装配工艺;郭延;《东方电机》;正文第37-38页 * |
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| Publication number | Publication date |
|---|---|
| CN109245378A (en) | 2019-01-18 |
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