CN209767314U - Flat traction motor - Google Patents
Flat traction motor Download PDFInfo
- Publication number
- CN209767314U CN209767314U CN201920699563.2U CN201920699563U CN209767314U CN 209767314 U CN209767314 U CN 209767314U CN 201920699563 U CN201920699563 U CN 201920699563U CN 209767314 U CN209767314 U CN 209767314U
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- Prior art keywords
- stator
- rotor
- stator core
- brake
- traction motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 230000017525 heat dissipation Effects 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 3
- 230000004323 axial length Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model discloses a flat traction motor for an elevator, which is a radial magnetic flux permanent magnet traction motor and comprises a stator part and a rotor part, wherein a rotor of the flat traction motor comprises a U-shaped traction rope groove part, a stator supporting part and a rotor amplitude plate; a traction sheave rope groove is arranged on the outer peripheral surface of the traction rope groove part, and the magnetic steel is attached to the inner peripheral surface of the traction rope groove part; the stator core is fixed on the outer peripheral face of the stator core supporting part, the stator core, the stator coil and the stator core supporting part are located in an annular groove between the magnetic steel of the rotor and the stator supporting part together, and the inner peripheral face of the stator core supporting part is supported on the outer peripheral face of the stator supporting part through a pair of bearings. The utility model discloses axial length is short, compact structure, and the radiating effect is good.
Description
Technical Field
The utility model relates to a synchronous traction motor technical field of permanent magnetism for the elevator, in particular to elevator is with flat traction motor.
Background
The permanent magnet synchronous traction motor for the elevator at present mainly comprises a radial magnetic flux permanent magnet traction motor and an axial magnetic flux disc type permanent magnet motor. The traction wheel of the radial flux permanent magnet traction motor is fixedly connected with one side of the rotor in a welding or press fitting or other modes; or the traction sheave and the rotor are cast integrally, but the traction sheave is still arranged at one side of the rotor to form a cantilever type structure. The cantilever type structure has higher mechanical property requirement on the structural member, and inevitably causes the material consumption to be greatly increased, the service life of the bearing is short or the cost is increased by selecting a larger bearing. In addition, the cantilever type structure has long axial length and can not meet the requirement of thinning technology trend.
In order to overcome the defects of the cantilever type radial flux permanent magnet traction motor, a radial flux permanent magnet traction motor with a double-support structure form or a traction rope groove processed on the outer circle of a rotor in Chinese patent No. CN204823609U is provided, but the radial flux permanent magnet traction motor with the structure form has the problem that the axial length is still longer.
In addition, as in chinese patent No. CN208241552U, the hoisting rope groove is also machined on the rotor outer circle, but this kind of technology is applied to the double-stator heavy-load hoisting machine, and still has the disadvantage of long axial length.
In addition, the casing of the radial flux permanent magnet traction motor is closed, the heat dissipation effect is poor, and as is known, the heat dissipation of the motor has a limit on the power-to-volume ratio, so that the improvement of the power-to-volume ratio is limited.
Although the axial length of the axial flux disc type permanent magnet motor is greatly shortened compared with that of a radial flux permanent magnet traction motor, the axial flux disc type permanent magnet motor has the following defects: 1. the stator core needs to be punched and wound, the process is complex, and special punching groove and iron core rotating and winding equipment are needed; 2. a stator core forms a coil inserting groove on the end face, and the coil inserting of a stator coil is difficult; 3. the stator and the rotor have larger axial suction force, larger bearings need to be selected and matched, and the service life of the bearings is shortened.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a flat traction motor for an elevator, which is a radial magnetic flux permanent magnet traction motor and comprises a stator part and a rotor part, wherein the stator part comprises a stator core, a stator coil wound on the stator core and a stator core supporting part used for fixing the stator core; the rotor part consists of a rotor and magnetic steel; a brake and a magnetic encoder are arranged between the stator part and the rotor part, and the rotor comprises a hoisting rope groove part, a stator supporting part and a rotor amplitude plate which are connected in a U shape; a traction sheave rope groove is arranged on the outer peripheral surface of the traction rope groove part, and the magnetic steel is attached to the inner peripheral surface of the traction rope groove part; the stator core is fixed on the outer peripheral face of the stator core supporting portion, the stator core, the stator coil and the stator core supporting portion are located in an annular groove between the magnetic steel of the rotor and the stator supporting portion, and the inner peripheral face of the stator core supporting portion is supported on the outer peripheral face of the stator supporting portion through a pair of bearings.
In a preferred embodiment of the present invention, an end plate is disposed at the second end edge of the stator core supporting portion, and the stator core is fixed to the end plate by bolts.
The utility model discloses a preferred embodiment be provided with the stopper assembly portion that radially extends away on the second end edge of stator core supporting part be provided with the rotor brake portion that radially extends away on the second end edge of towline slot part, the stopper is installed on the stopper assembly portion, it is relative on the stopper be provided with the brake block on the face of rotor brake portion, the brake block with the brake is realized in the contact of rotor brake portion.
In a preferred embodiment of the invention, the rotor is cast together with the rotor braking part, the stator supporting part and the rotor web.
In a preferred embodiment of the present invention, the brake is a caliper disc type electromagnetic brake.
In a preferred embodiment of the present invention, a base extending toward the first end edge of the stator supporting portion is provided at a lower side of the brake mounting portion, and the base is located at a periphery of an outer peripheral surface of the groove portion of the hoist rope.
In a preferred embodiment of the present invention, the magnetic encoder includes an encoder detecting device and an induced magnetic ring, the encoder detecting device is mounted on the second end edge of the stator core supporting portion through a bracket and located at the second end edge position of the stator supporting portion, and the induced magnetic ring is mounted on the second end edge of the stator supporting portion.
In a preferred embodiment of the present invention, the magnetic encoder includes an encoder detecting device and an induced magnetic ring, the encoder detecting device is mounted on the base through a bracket and located at a first end edge of the stator supporting portion, and the induced magnetic ring is mounted on the first end edge of the stator supporting portion.
In a preferred embodiment of the present invention, the heat dissipation holes are formed in the rotor web, a first heat dissipation air duct is disposed between the stator core and the inner surface of the rotor web, an air gap is disposed between the inner circumferential surface of the magnetic steel and the outer circumferential surface of the stator core, a second heat dissipation air duct is disposed between the brake assembly portion and the rotor brake portion, and the cooling air flows through the air path formed by the heat dissipation holes, the first heat dissipation air duct, the air gap, and the second heat dissipation air duct to dissipate heat of the stator core and the stator coil.
In a preferred embodiment of the present invention, the brake mounting portion is provided with a vent hole.
In a preferred embodiment of the present invention, the stator supporting portion is a hollow shaft structure.
In a preferred embodiment of the present invention, the present invention further comprises a manual turning gear, wherein the manual turning gear comprises a circle of turning gear disposed on the rotor braking portion.
The utility model adopts the radial magnetic flux rotating permanent magnet motor, the traction steel wire rope groove is directly processed on the excircle of the rotor, and the brake disc is cast together with the rotor, thereby achieving the complete integration of the traction wheel, the rotor and the brake disc, reducing the assembly of parts and greatly reducing the axial size of the motor; radiating holes are processed on the rotor amplitude plate to form an air path, a hollow shaft structure is adopted, a closed shell is not provided, the radiating performance of the motor is improved, and the power volume ratio of the motor is improved; the mechanical property of the mechanical structure is improved by adopting a double-support structure, and the stress is better; the double-sided brake of the brake disc of the traction machine is realized by matching with the caliper disc brake, and the braking force is improved. The utility model discloses axial length is short, compact structure, and the radiating effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a flat traction motor for an elevator according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a flat traction motor for an elevator according to embodiment 2 of the present invention.
Fig. 3 is a schematic structural view of a rotor in flat traction motors for elevators according to embodiments 1 and 2 of the present invention, as viewed from one direction.
Fig. 4 is a schematic structural view of a rotor in flat traction motors for elevators according to embodiments 1 and 2 of the present invention, as viewed from another direction.
Fig. 5 is a schematic structural view of a stator core in flat traction motors for elevators according to embodiments 1 and 2 of the present invention.
Fig. 6 is a schematic structural view of a flat traction motor for an elevator according to embodiment 2 of the present invention as seen from one direction.
Fig. 7 is a schematic structural view of a flat traction motor for an elevator according to embodiment 2 of the present invention as seen from another direction.
Detailed Description
The invention is further described below with reference to the accompanying drawings and the detailed description.
Example 1
Referring to fig. 1, 3 to 5, the flat traction motor for elevators shown in the drawings is a radial flux permanent magnet traction motor including a stator part and a rotor part.
The stator portion includes a stator core 2 and a stator coil 3 wound around the stator core 2, and a stator core support portion 1B for fixing the stator core 2. The stator core 2 is formed by laminating silicon steel sheet punching grooves.
An end plate 1C is provided at a second end edge of the stator core support portion 1B, and the stator core 2 is fixed to the end plate 1C by bolts 10 and located on the outer peripheral surface of the stator core support portion 1B. A brake mounting portion 1A extending radially is provided on a second end edge of the stator core support portion 1B. The brake assembling portion 1A, the stator core supporting portion 1B, and the end plate 1C are integrally cast. In addition, a vent hole 1D is opened in the brake mounting portion 1A.
The rotor part consists of a rotor 11 and magnetic steel 12. The rotor 11 comprises a towline groove part 11B, a stator supporting part 11C and a rotor amplitude plate 11A which are connected in a U shape, the inner edge of the rotor amplitude plate 11A is integrally connected with the first end edge 11D of the stator supporting part 11C, the outer edge of the rotor amplitude plate 11A is integrally connected with the first end edge 11E of the towline groove part 11B, the towline groove part 11B is positioned at the periphery of the stator supporting part 11C, and the towline groove part 11B, the stator supporting part 11C and the rotor amplitude plate 11A enclose an annular groove 11F with a U-shaped radial section. A sheave groove 13 is formed on the outer peripheral surface of the sheave groove portion 11B.
The magnetic steel 12 is attached to the inner peripheral surface of the hoist rope groove portion 11B. The stator support portion 11C is a hollow shaft structure to facilitate heat dissipation.
A rotor braking portion 11H extending radially is provided at the second end edge 11G of the hoist rope groove portion 11B. The rotor brake section 11H is cast together with the hoist rope groove section 11B, the stator support section 11C, and the rotor web 11A. The rotor web 11A is provided with heat dissipation holes 11J.
When the elevator of this embodiment is assembled with the flat traction motor, the stator core 2, the stator coil 3, and the stator core support portion 1B are located together in the annular groove 11F between the magnetic steel of the rotor 12 and the stator support portion 11C, and the inner circumferential surface of the stator core support portion 1B is supported on the outer circumferential surface of the stator support portion 11C by the pair of bearings 4 and 7, wherein the stator support portion 11C is press-fitted in concentric inner holes of the bearings 4 and 7, and the first end edge 11D and the second end edge 11K of the stator support portion 11C are respectively fixed with the retainer rings 6 and 16, and the retainer rings 6 and 16 respectively axially limit the inner rings of the bearings 7 and 4.
The inner peripheral surface of the stator core support portion 1B is press-fitted on the concentric outer circles of the bearings 4, 7, so that the rotor rotates around the stator core support portion 1B via the stator support portion 11C, the bearings 4, 7.
The base 15 of the flat traction motor for an elevator is welded to the bottom side of the lower side of the brake mounting portion 1A, and the base 15 extends toward the first end 11D of the stator support portion 11C such that the base 15 is positioned on the outer periphery of the outer peripheral surface of the hoist rope groove portion 11B.
The brake of the present embodiment is a caliper disc type electromagnetic brake 14A. The caliper disc type electromagnetic brake 14A is fixedly arranged on the brake assembly part 1A through a synchronous tensioning screw rod 17, a brake pad 14B is arranged on the surface, opposite to the rotor brake part 11H, of the caliper disc type electromagnetic brake 14A, and the brake pad 14B is in contact with the rotor brake part 11H to realize braking.
The magnetic encoder comprises an encoder detection device 9 and an induced magnetic ring 8. The induced magnetic ring 8 is arranged on a second end edge of a stator supporting part 11C of the rotor and rotates together with the rotor, and the encoder detection device 9 is arranged on the second end edge of a stator core supporting part 1B through a support 5 and is located at the second end edge of the stator supporting part 11C, so that the rotor magnetic pole position detection and the speed detection are realized.
After the flat traction motor for an elevator of this embodiment is assembled, a first heat dissipation duct 18 is formed between the stator core 2 and the inner surface of the rotor web 11A. An air gap 19 is provided between the inner circumferential surface of the magnetic steel 12 and the outer circumferential surface of the stator core 2. Rotor brake portion 11H and brake assembly portion 1A are parallel to each other and are provided with second heat dissipation wind channel 20 between brake assembly portion 1A and rotor brake portion 11H, and cooling air flows by the wind path that louvre 11J, first heat dissipation wind channel 18, air gap 19, second heat dissipation wind channel 20, ventilation hole 1D formed, dispels the heat to stator core 2 and stator coil 3, improves heat dispersion, improves motor power volume ratio.
Example 2
Referring to fig. 2 to 6 and 7, the flat traction motor for an elevator shown in the drawings is different from that of embodiment 1 in that: the encoder detection device 9 is mounted on the base 15 through the bracket 5 and is located at the first end edge 11D of the stator supporting portion 11C, and the induced magnetic ring 8 is mounted on the first end edge 11D of the stator supporting portion 11C.
In addition, the manual turning gear is easy to install in the embodiment, only a circle of turning gear needs to be machined on the excircle of the rotor braking portion, the rotor, the traction wheel, the brake disc and the turning gear are integrated, the assembly of parts is reduced, the working time is saved, and the accumulated error caused by assembly can be greatly reduced.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The person skilled in the art, without departing from the scope of the invention, may use the technical content to make many changes and modifications to the technical solution of the invention, or to modify the equivalent embodiments with equivalent changes. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.
Claims (12)
1. A flat traction motor for an elevator is a radial magnetic flux permanent magnet traction motor and comprises a stator part and a rotor part, wherein the stator part comprises a stator core, a stator coil wound on the stator core and a stator core supporting part used for fixing the stator core; the rotor part consists of a rotor and magnetic steel; a brake and a magnetic encoder are arranged between the stator part and the rotor part, and the rotor comprises a hoisting rope groove part, a stator supporting part and a rotor amplitude plate which are connected in a U shape; a traction sheave rope groove is arranged on the outer peripheral surface of the traction rope groove part, and the magnetic steel is attached to the inner peripheral surface of the traction rope groove part; the stator core is fixed on the outer peripheral face of the stator core supporting portion, the stator core, the stator coil and the stator core supporting portion are located in an annular groove between the magnetic steel of the rotor and the stator supporting portion, and the inner peripheral face of the stator core supporting portion is supported on the outer peripheral face of the stator supporting portion through a pair of bearings.
2. The flat traction motor for elevator according to claim 1, wherein an end plate is provided on the second end edge of the stator core support part, and the stator core is fixed to the end plate by bolts.
3. The flat traction motor for an elevator according to claim 1, wherein a brake mounting portion extending radially is provided on the second end edge of the stator core supporting portion, a rotor braking portion extending radially is provided on the second end edge of the traction rope groove portion, the brake is mounted on the brake mounting portion, and a brake pad is provided on a surface of the brake opposite to the rotor braking portion, and the brake pad is in contact with the rotor braking portion to perform braking.
4. The flat traction motor for elevator as claimed in claim 3, wherein the traction rope groove part of the rotor, the stator supporting part, the rotor web and the rotor braking part are cast together.
5. The flat traction motor for elevator according to claim 3, wherein the brake is a caliper disc type electromagnetic brake.
6. The flat traction motor for elevator as claimed in claim 3, wherein a base extended toward the first end of the stator supporting part is provided at a lower side of the brake assembling part, and the base is positioned at an outer circumference of the traction rope groove part.
7. The flat traction motor for elevator as claimed in claim 6, wherein the magnetic encoder comprises an encoder detecting unit and an induced magnetic ring, the encoder detecting unit is installed on the second end edge of the stator core supporting part through a bracket and is located at the second end edge of the stator supporting part, and the induced magnetic ring is installed on the second end edge of the stator supporting part.
8. The flat traction motor for elevator as claimed in claim 6, wherein the magnetic encoder comprises an encoder detecting unit and an induced magnetic ring, the encoder detecting unit is mounted on the base through a bracket and located at a first end edge of the stator supporting part, and the induced magnetic ring is mounted on a first end edge of the stator supporting part.
9. The flat traction motor for an elevator according to claim 3, wherein heat dissipation holes are formed in the rotor web, a first heat dissipation air duct is provided between the stator core and the inner surface of the rotor web, an air gap is provided between the inner circumferential surface of the magnetic steel and the outer circumferential surface of the stator core, a second heat dissipation air duct is provided between the brake assembly portion and the rotor brake portion, and cooling air flows through an air path formed by the heat dissipation holes, the first heat dissipation air duct, the air gap, and the second heat dissipation air duct to dissipate heat of the stator core and the stator coil.
10. The flat traction motor for elevator according to claim 9, wherein a vent hole is formed at the brake mounting portion.
11. The flat traction motor for elevator according to claim 10, wherein the stator supporting part is a hollow shaft structure.
12. The flat traction motor for elevator as claimed in claim 3, further comprising a manual turning gear comprising a ring of turning gears provided on the brake part of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920699563.2U CN209767314U (en) | 2019-05-15 | 2019-05-15 | Flat traction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920699563.2U CN209767314U (en) | 2019-05-15 | 2019-05-15 | Flat traction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209767314U true CN209767314U (en) | 2019-12-10 |
Family
ID=68761528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920699563.2U Withdrawn - After Issue CN209767314U (en) | 2019-05-15 | 2019-05-15 | Flat traction motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209767314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011478A (en) * | 2019-05-15 | 2019-07-12 | 永大电梯设备（中国）有限公司 | A kind of flat traction motor |
-
2019
- 2019-05-15 CN CN201920699563.2U patent/CN209767314U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011478A (en) * | 2019-05-15 | 2019-07-12 | 永大电梯设备（中国）有限公司 | A kind of flat traction motor |
| CN110011478B (en) * | 2019-05-15 | 2023-11-28 | 上海吉亿电机有限公司 | Flat traction motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191210 Effective date of abandoning: 20231128 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191210 Effective date of abandoning: 20231128 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |