CN112615462B - Motor for outer rotor synchronous traction machine for elevator and machining and assembling method thereof - Google Patents
Motor for outer rotor synchronous traction machine for elevator and machining and assembling method thereof Download PDFInfo
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- CN112615462B CN112615462B CN202011368134.0A CN202011368134A CN112615462B CN 112615462 B CN112615462 B CN 112615462B CN 202011368134 A CN202011368134 A CN 202011368134A CN 112615462 B CN112615462 B CN 112615462B
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- bearing
- rotating shaft
- magnetic yoke
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- rotor magnetic
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a motor for an outer rotor synchronous traction machine for an elevator and a processing and assembling method thereof, wherein the motor comprises a machine base, a rotating shaft is arranged in a bearing hole of the machine base, a rotor magnetic yoke is formed by casting, and the rotating shaft is assembled together by interference fit after a mounting hole is machined and polished; after the assembled rotating shaft and the rotor magnetic yoke are machined to the designed size and shape, the rotating shaft penetrates through the bearing hole and is arranged on the base through the front bearing and the rear bearing; a bearing chamber for accommodating the front bearing is arranged between the engine base and the rotor magnetic yoke, the rear bearing is sleeved on the rotating shaft, and a shaft neck for limiting the front end of the rear bearing is arranged on the inner side of the bearing hole. The invention has the following beneficial effects: 1) the machining process and the machining area are reduced, and the cost is reduced by selecting the tapered roller bearing; 2) the excircle runout of the assembled rotor is small; 3) the distance between the gravity center of the traction wheel and the stressed center of the front bearing is retracted, so that the harmful deformation of the machine base in a bearing state is reduced.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to a motor for an outer rotor synchronous traction machine for an elevator and a processing and assembling method thereof.
Background
At present, the type selection arrangement of the bearings used by the outer rotor permanent magnet synchronous motor for the tractor (especially the outer rotor permanent magnet synchronous gearless motor for the tractor) mainly comprises two types:
one is that the front bearing (bearing) adopts a full-sealed self-aligning roller bearing, the rear bearing adopts a full-sealed deep groove ball bearing, and the rotor and the shaft are of an integrated structure. The structure has the advantages of easy assembly, one-time processing of the rotor and the shaft, good concentricity after assembly, small rotor jump, convenient brake adjustment and good later maintenance. The structure has the defects that the inner ring and the outer ring of the bearing can not be separately assembled, when the front bearing and the rear bearing which are arranged on the rotor are arranged from one end of the machine base, the outer ring of the deep groove ball bearing can not adopt steps to position the outer ring, so the rotor and the machine base are connected through the bearing cover, the inner part of the deep groove ball bearing occupies larger axial space, the thickness dimension of the motor for the tractor in the horizontal direction is increased, and the application of the motor for the tractor in a machine room-free elevator is limited to a certain extent. The full-sealed bearing can not be oiled, the service life is greatly influenced by elevator use frequency and environmental temperature, the motor for the tractor must be replaced or replaced on site after the bearing operation fails, the self-aligning roller bearing has higher cost, has lower bearing capacity compared with the tapered roller bearing with the same specification, has lower capacity of bearing axial force than the tapered roller bearing, and is easy to generate abnormal sound if the operation is improper in the assembling process.
The other type is that the front bearing and the rear bearing both adopt tapered roller bearings, wherein the model of the front bearing (bearing) is larger than that of the rear bearing, the rotor and the shaft are of split structures and are assembled after being respectively processed. The structure has the defects that the inner ring of the bearing is firstly arranged on the shaft neck, then the shaft end is pressed into the shaft hole of the rotor, the interference magnitude of the matching is difficult to master, the excircle run-out of the rotor is large after the assembly, and the ideal effect can be achieved after the grinding processing and the selecting matching of the matched shaft neck. Motor brake and the difficult adjustment in rotor clearance for the hauler can appear transferring when dispatching from the factory, and later stage building site is used and is taken place the change, still need go the condition of building site secondary debugging.
In addition, the current arrangement mode of assembling the rope blocking rod of the motor for the outer rotor permanent magnet synchronous traction machine and the machine base mainly comprises one of the following steps: the front outer end face of the machine base provided with the rope blocking rod is fully processed, and the machine base has the advantages that the matching precision of the processed end face and the rope blocking rod is high, and the machine base is easy to assemble. The disadvantages are high processing cost and long processing time.
In addition, the outer end face of the rotor is provided with a step for assembling the traction wheel, and the outer circular face of the inner side of the step is processed into a plane. The disadvantage is that the axial overhang of the traction sheave for suspending the wire rope increases. Because the stress of the motor for the outer rotor traction machine is a cantilever structure, the cantilever is equivalently lengthened, so that the service life of the bearing is influenced, the deformation of the base is increased when the motor is stressed, the weight of the base needs to be increased, and the cost is increased.
Disclosure of Invention
In order to overcome the problems, the invention provides a motor for an outer rotor synchronous traction machine for an elevator and a processing and assembling method thereof.
The technical scheme of the invention is to provide a motor for an outer rotor synchronous traction machine for an elevator, which comprises a machine base, wherein a bearing hole is formed in the machine base, a rotating shaft is arranged in the bearing hole, and a rotor magnetic yoke is sleeved at one end of the rotating shaft, and the motor is characterized in that: the rotor magnetic yoke is provided with a mounting hole for mounting the rotating shaft; the rotor magnetic yoke is formed by casting, and the mounting hole is assembled with the rotating shaft in an interference fit manner after being machined to a preset size; after the assembled rotating shaft and the rotor magnetic yoke are machined to the designed size and shape, the rotating shaft penetrates through the bearing hole and is arranged on the base through a front bearing and a rear bearing; the bearing chamber for accommodating the front bearing is arranged between the machine base and the rotor magnetic yoke, the rear bearing sleeve is arranged on the rotating shaft, a shaft neck for limiting the front end of the outer ring of the rear bearing is arranged on the inner side of the bearing hole, and the rotating shaft is in threaded connection with a pair of round nuts for limiting the rear end of the rear bearing.
Preferably, the front bearing and the rear bearing are both tapered roller bearings.
Preferably, the front end and the rear end of the front bearing and the rear bearing are both provided with oil seals.
Preferably, the symmetry sets up the boss of two protrusions in its preceding terminal surface on the preceding terminal surface of frame, the boss all has the step face after the machine tooling, be provided with the screw hole that is used for installing the rope blocking pole on the step face, the step face is relative the interval of the preceding terminal surface of frame is 2 ~ 4 mm.
Preferably, an annular flange step protruding outwards is arranged on the front end face of the rotor yoke along the edge of the rotor yoke, the flange step and the rotor yoke are integrally cast, and the end face and the outer peripheral face of the flange step are machined into smooth surfaces.
Preferably, the distance between the end face of the flange step and the front end face of the rotor yoke is 5-7 mm.
Preferably, the distance between the end face of the flange step and the front end face of the rotor yoke is 6 mm.
The invention also provides a processing and assembling method of the motor for the outer rotor synchronous traction machine for the elevator, which comprises the following steps:
1) manufacturing parts: manufacturing the rotating shaft, and manufacturing the base and the rotor magnetic yoke by casting; machining the base to the design requirement;
2) rough machining: carrying out primary machining on the rotating shaft to obtain a semi-finished product close to the design requirement; carrying out primary machining on the mounting hole of the rotor magnetic yoke to obtain a semi-finished product close to the design requirement;
3) assembling 1: mounting the semi-finished product of the rotating shaft into the mounting hole of the rotor magnetic yoke in an interference fit manner to obtain an assembly body;
4) finish machining: machining the assembly body to enable the assembly body to meet design requirements;
5) assembling 2: respectively placing the outer rings and the oil seals at two sides of the front bearing and the rear bearing into the bearing chamber and on the shaft neck; heating the inner rings of the front bearing and the rear bearing, sleeving the inner rings on the rotating shaft, arranging the rotating shaft in a bearing hole of the machine base, and locking the inner rings with the two round nuts after adjusting the clearance of the rear bearing.
The motor for the outer rotor synchronous traction machine for the elevator has the following beneficial effects:
1) the processing procedure and the machining area are reduced, the processing time is reduced, and the cost is reduced;
2) a tapered roller bearing is selected, and a bearing cover for connecting the base and the rotor is omitted;
3) the outer ring of the tapered roller bearing can be firstly installed in a bearing hole of a base and then assembled with the rotor, so that the defect of large jumping quantity of the outer circle of the rotor after the conventional assembly is overcome;
4) the end face of the boss which is higher than the front end face of the machine base and the flange step of the rotor magnetic yoke are only processed, and the other parts do not need to leave casting machining allowance, so that the machining time is shortened, and the cost is reduced;
5) the distance between the bearing center of the traction wheel and the stress center of the front bearing is retracted, so that the harmful deformation of the machine base in a bearing state is reduced.
Drawings
Fig. 1 is a front view of a motor for an outer rotor synchronous traction machine for an elevator according to the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at B;
fig. 4 is a schematic perspective view of the motor for the outer rotor synchronous traction machine for an elevator according to the present invention;
FIG. 5 is a perspective view of the stand;
FIG. 6 is a cross-sectional view of a rotor yoke;
fig. 7 is a partially enlarged view at C in fig. 6.
Detailed Description
The following describes in further detail embodiments of the present invention.
As shown in fig. 1 to 7, the motor for the outer rotor synchronous traction machine for the elevator according to the present invention includes a machine base 10, a bearing hole (not shown) is formed in the machine base 10, a rotating shaft 12 is disposed in the bearing hole, a rotor yoke 14 is sleeved on one end of the rotating shaft 12, and a mounting hole (not shown) for mounting the rotating shaft 12 is formed in the rotor yoke 14; the rotor yoke 14 is formed by casting and the mounting hole is machined, and then assembled with the rotating shaft 12 in an interference fit manner; after the assembled rotating shaft 12 and the rotor yoke 14 are machined to the designed size and shape, the rotating shaft 12 passes through a bearing hole and is arranged on the stand 10 through a front bearing 16 and a rear bearing 18; a bearing chamber 20 for accommodating the front bearing 16 is arranged between the machine base 10 and the rotor yoke 14, the rear bearing 18 is sleeved on the rotating shaft 12, a shaft neck 22 for limiting the front end of the rear bearing 18 is arranged on the inner side of the bearing hole, and a pair of round nuts 24 for limiting the rear end of the rear bearing 18 are connected with the rotating shaft through external threads.
The front bearing 16 and the rear bearing 18 are both tapered roller bearings. Both the front and rear ends of the front bearing 16 and the rear bearing 18 are provided with oil seals 26.
Two bosses 28 protruding out of the front end face of the machine base 10 are symmetrically arranged on the front end face of the machine base 10, the bosses 28 are respectively provided with a machined step face, a threaded hole (not shown) for installing a rope blocking rod 30 is formed in the step face, and the distance between the step face and the front end face of the machine base 10 is 3 mm.
An annular flange step 32 protruding outward is provided on the front end surface of the rotor yoke 14 along the edge thereof, the flange step 32 and the rotor yoke 14 are integrally cast, and the end surface and the outer peripheral surface of the flange step 32 are machined into a smooth surface. The distance between the end face of the flange step 32 and the front end face of the rotor yoke 14 is 6 mm.
The invention relates to a processing and assembling method of a motor for an outer rotor synchronous traction machine for an elevator, which comprises the following steps:
1) manufacturing parts: manufacturing a rotating shaft 12 by machining, and manufacturing a base 10 and a rotor yoke 14 by casting; machining the base 10 to the design requirements;
2) rough machining: carrying out primary machining on the rotating shaft 12 to obtain a semi-finished product close to the design requirement; carrying out primary machining on the mounting hole of the rotor magnetic yoke 14 to obtain a semi-finished product close to the design requirement;
3) assembling 1: mounting the semi-finished product of the rotating shaft 12 into a mounting hole of a rotor yoke 14 in an interference fit manner to obtain an assembly body;
4) and (3) finish machining: machining the assembly body to enable the assembly body to meet design requirements;
5) assembling 2: placing the outer races of the front bearing 16 and the rear bearing 18 and the two side oil seals 26 into the bearing chamber 20 and on the journal 22 respectively; heating the inner rings of the front bearing 16 and the rear bearing 18 and then sleeving the inner rings on the rotating shaft 12, then arranging the rotating shaft 12 in a bearing hole of the machine base 10, and locking the inner rings with two round nuts 24 after adjusting the clearance of the rear bearing 18.
Compared with the prior art, the invention has the following advantages:
after the rotor magnetic yoke 14 is roughly processed, the rotating shaft 12 is pressed into a bearing hole of the rotor magnetic yoke 14 in a close-fitting state, and a grinding process of matching with a journal 22 is omitted; then, finish machining is carried out until the design requirement is met, one-time machining of the shaft and the rotor magnetic yoke 14 is realized, and the jump caused by separate machining and assembly errors is reduced to the maximum extent; the inner and outer rings of the front and rear bearings 18 are placed in the bearing chamber 20 of the housing 10 and on the journal 22, respectively, and are locked by the round nuts 24. The structure and the bearing arrangement mode are matched with a self-aligning bearing and a deep groove ball bearing for use and comparison, a bearing cover for connecting the machine base 10 and the rotor is omitted, the arrangement of the front bearing 16 is close to the bearing center by about 15mm, the center point borne by the traction sheave is closer to the stress center of the front bearing 16, the service life of the bearing can be prolonged, and the stability of the motor for the traction machine can be improved.
The front end face of the machine base 10 is cast with two bosses 28 which are symmetrically arranged and are higher than each other, the height of each boss 28 is about 5mm before machining, each boss 28 is higher than the blank face by about 3mm after machining, and each step end face is provided with a threaded hole for installing the rope blocking rod 30.
The outer circle of the end face of the rotor is cast with a flange step 32, and the flange step 32 is about 6mm higher than the large plane of the end face. The end face and the excircle of the step need to be processed, the concave big end face does not need to be processed, and the end face processing time can be reduced by about 80%. After assembly, the distance from the stress point of the traction sheave 34 to the front end surface is reduced by 6 mm; the axial size of the machine base 10 can be synchronously lengthened, the brake pad assembling holes can also be synchronously moved outwards, so that the local deformation of the machine base 10 is reduced, the bearing capacity is increased, the deformation of the rotor under the positive pressure action of the brakes on the two sides is reduced, the debugging is easier, and in actual use, compared with the factory state, the larger deviation cannot occur.
The above embodiment is only one embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (1)
1. A processing and assembling method of a motor for an outer rotor synchronous traction machine for an elevator is characterized in that: the motor comprises a base, wherein a bearing hole is formed in the base, a rotating shaft is arranged in the bearing hole, a rotor magnetic yoke is sleeved at one end of the rotating shaft, and a mounting hole for mounting the rotating shaft is formed in the rotor magnetic yoke; the rotor magnetic yoke is formed by casting, and the mounting hole is assembled with the rotating shaft in an interference fit manner after being machined to a preset size; after the assembled rotating shaft and the rotor magnetic yoke are machined to the designed size and shape, the rotating shaft penetrates through the bearing hole and is arranged on the base through a front bearing and a rear bearing; a bearing chamber for accommodating the front bearing is arranged between the base and the rotor magnetic yoke, the rear bearing is sleeved on the rotating shaft, a shaft neck for limiting the front end of the outer ring of the rear bearing is arranged on the inner side of the bearing hole, and the rotating shaft is in threaded connection with a round nut for limiting the rear end of the rear bearing;
the front bearing and the rear bearing are both tapered roller bearings;
oil seals are arranged at the front end and the rear end of the front bearing and the rear bearing respectively;
the front end face of the base is symmetrically provided with two bosses protruding out of the front end face of the base, the bosses are provided with machined step faces, threaded holes for installing rope blocking rods are formed in the step faces, and the distance between the step faces and the front end face of the base is 2-4 mm;
the front end face of the rotor magnetic yoke is provided with an annular flange step protruding outwards along the edge of the front end face of the rotor magnetic yoke, the flange step and the rotor magnetic yoke are integrally cast and molded, and the end face and the outer peripheral face of the flange step are machined into smooth surfaces;
the distance between the end face of the flange step and the front end face of the rotor magnetic yoke is 6 mm;
the method comprises the following steps:
1) manufacturing parts: manufacturing the rotating shaft, and manufacturing the engine base and the rotor magnetic yoke by casting; machining the base to the design requirement;
2) rough machining: carrying out primary machining on the rotating shaft to obtain a semi-finished product close to the design requirement; carrying out primary machining on the mounting hole of the rotor magnet yoke to obtain a semi-finished product close to the design requirement;
3) assembling 1: mounting the semi-finished product of the rotating shaft into a mounting hole of the rotor magnetic yoke in an interference fit manner to obtain an assembly body;
4) finish machining: machining the assembly body to enable the assembly body to meet design requirements;
5) assembling 2: respectively placing the outer rings and the oil seals at two sides of the front bearing and the rear bearing into the bearing chamber and on the shaft neck; heating the inner rings of the front bearing and the rear bearing, sleeving the inner rings on the rotating shaft, arranging the rotating shaft in a bearing hole of the base, and adjusting the clearance of the rear bearing and then locking the inner rings with the two round nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011368134.0A CN112615462B (en) | 2020-11-30 | 2020-11-30 | Motor for outer rotor synchronous traction machine for elevator and machining and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011368134.0A CN112615462B (en) | 2020-11-30 | 2020-11-30 | Motor for outer rotor synchronous traction machine for elevator and machining and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112615462A CN112615462A (en) | 2021-04-06 |
| CN112615462B true CN112615462B (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011368134.0A Active CN112615462B (en) | 2020-11-30 | 2020-11-30 | Motor for outer rotor synchronous traction machine for elevator and machining and assembling method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115276336B (en) * | 2022-08-04 | 2023-08-29 | 江苏中车电机有限公司 | Assembling method of motor with double conical bearings at two ends |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201473154U (en) * | 2009-09-09 | 2010-05-19 | 李申 | Synchronous gearless traction machine of elevator |
| CN202594584U (en) * | 2012-06-09 | 2012-12-12 | 西尼电梯(杭州)有限公司 | Permanent magnet synchronous traction machine |
| CN203451006U (en) * | 2013-07-30 | 2014-02-26 | 广西正源电机有限公司 | Permanent-magnet synchronous traction machine |
| CN104495583A (en) * | 2014-11-14 | 2015-04-08 | 怡达快速电梯有限公司 | Elevator traction machine and method for improving comprehensive performance thereof |
| CN205527227U (en) * | 2016-01-25 | 2016-08-31 | 黄立成 | A external rotor gearless machine for elevator |
| CN106629353A (en) * | 2016-12-30 | 2017-05-10 | 浙江西子富沃德电机有限公司 | Permanent magnet synchronous gearless traction machine |
| CN209778022U (en) * | 2019-03-04 | 2019-12-13 | 苏州蒙特纳利驱动设备有限公司 | Elevator traction machine |
| CN110775786A (en) * | 2019-11-21 | 2020-02-11 | 江西特种电机股份有限公司 | Novel inner rotor traction machine structure |
-
2020
- 2020-11-30 CN CN202011368134.0A patent/CN112615462B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201473154U (en) * | 2009-09-09 | 2010-05-19 | 李申 | Synchronous gearless traction machine of elevator |
| CN202594584U (en) * | 2012-06-09 | 2012-12-12 | 西尼电梯(杭州)有限公司 | Permanent magnet synchronous traction machine |
| CN203451006U (en) * | 2013-07-30 | 2014-02-26 | 广西正源电机有限公司 | Permanent-magnet synchronous traction machine |
| CN104495583A (en) * | 2014-11-14 | 2015-04-08 | 怡达快速电梯有限公司 | Elevator traction machine and method for improving comprehensive performance thereof |
| CN205527227U (en) * | 2016-01-25 | 2016-08-31 | 黄立成 | A external rotor gearless machine for elevator |
| CN106629353A (en) * | 2016-12-30 | 2017-05-10 | 浙江西子富沃德电机有限公司 | Permanent magnet synchronous gearless traction machine |
| CN209778022U (en) * | 2019-03-04 | 2019-12-13 | 苏州蒙特纳利驱动设备有限公司 | Elevator traction machine |
| CN110775786A (en) * | 2019-11-21 | 2020-02-11 | 江西特种电机股份有限公司 | Novel inner rotor traction machine structure |
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| CN112615462A (en) | 2021-04-06 |
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