CN107591977B - Rotor mounting tool for permanent magnet motor - Google Patents
Rotor mounting tool for permanent magnet motor Download PDFInfo
- Publication number
- CN107591977B CN107591977B CN201711041426.1A CN201711041426A CN107591977B CN 107591977 B CN107591977 B CN 107591977B CN 201711041426 A CN201711041426 A CN 201711041426A CN 107591977 B CN107591977 B CN 107591977B
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- rotor
- base
- lower bearing
- permanent magnet
- magnet motor
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- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Abstract
The invention discloses a rotor mounting tool for a permanent magnet motor, which is used for mounting a rotor in the permanent magnet motor in a lower bearing of the permanent magnet motor, wherein the lower end of the rotor is connected with an extension shaft in a threaded manner, the extension shaft penetrates through the lower bearing, a base is fixedly connected with a lower end cover in the permanent magnet motor, the upper end of the base is abutted to an inner ring of the lower bearing, the bottom end of the extension shaft penetrates through the base along the axis direction of the base, a dismounting sleeve is connected onto the base in a threaded manner, a driving plate is fixed on the lower end face of the dismounting sleeve, one end of the driving plate is clamped on the extension shaft, a limiting block is fixed on the upper end face of the dismounting sleeve, one end of the limiting block extends on the outer wall of the base, the dismounting sleeve is rotated, the driving plate downwards drives the extension shaft, the rotor is downwards dragged, and the rotor is mounted in the lower bearing. The invention can avoid the damage of the lower bearing in the rotor assembly process, and the extension shaft can be pulled out without mechanical equipment, thereby having low use cost and convenient manufacture.
Description
Technical field:
the invention/invention relates to a rotor mounting tool for a permanent magnet motor.
The background technology is as follows:
when the permanent magnet motor is mounted with the rotor, the positioning problem of the rotor and the bearing inner ring (the upper bearing 400 and the lower bearing 500) is troublesome due to the attraction of the rotor 200 and the stator 300, and the bearing may be damaged when the rotor 200 collides with the bearing inner ring, especially for the angular contact bearing.
For easy installation, the existing assembly scheme is to assemble the rotor and the bearing at one end in place, and then install the bearing at the other end. Namely:
1) Before the rotor 200 is inserted into the stator 300, the rotor 200, the upper bearing 400, the upper bearing seat and the upper end cover are assembled and fixed, so that the rotor 200 and the upper bearing 400 cannot generate relative motion; 2) Then, the lower bearing 500, the lower end cap 600, and the lower bearing housing are assembled to the motor housing. 3) And then hoisting the rotor 200, the upper bearing 400, the upper bearing seat and the upper end cover part of the motor which are assembled in the step 1), so that the rotor 200 passes through the stator 300 to be assembled with the lower bearing 500. Because the assembly of the rotor 200 and the upper and lower bearings has high requirements on positioning accuracy, the three-step installation method can avoid the condition that the bearings at two ends need to be positioned accurately at the same time.
In order to ensure that the axial position of the rotor 200 is accurately positioned in the lower bearing 500, a conventional method is to screw a shaft 1 (as shown in fig. 1) onto the rotor 200, insert the shaft 1 coaxially into the lower bearing 500, and then pull the shaft 1 through an external mechanical device, so as to finally realize the assembly of the rotor 200 into the lower bearing 500. Since the rotor 200 is in interference fit with the lower bearing 500, the inner and outer rings of the lower bearing 500 are subjected to opposite forces during the pulling of the extension shaft 1, and thus the lower bearing 500 is damaged. In addition, the cost required by externally connecting mechanical equipment is high.
The invention comprises the following steps:
the invention aims to solve the problems in the prior art and provides a rotor mounting tool for a permanent magnet motor.
The invention adopts the technical scheme that: a rotor installation frock for permanent-magnet machine, this frock is arranged in will rotor in the permanent-magnet machine installs in permanent-magnet machine's lower bearing, the lower extreme threaded connection of rotor has the extension axle, and this extension axle wears to locate in the lower bearing, including base, dismantlement cover, drive plate and stopper, the base with lower end cover fixed connection in the permanent-magnet machine, and the upper end butt of base is on the inner circle of lower bearing, and the bottom of extension axle runs through in the base along the axle center direction of base, dismantles cover threaded connection on the base, and the drive plate is fixed in on dismantling the lower terminal surface of cover, and the one end joint of drive plate is on the extension axle, and the stopper is fixed in on dismantling the up end of cover, and the one end of stopper stretches on the base outer wall, rotatory dismantlement cover, the drive plate downwardly driving extension axle, the extension axle pulls the rotor down to install the rotor in the lower bearing.
Further, the driving plate comprises two semicircular plate bodies, and a second clamping groove is formed in the center of each plate body.
Further, a limiting groove is formed in the outer circumferential wall of the base.
Further, the limiting block comprises a body in a shape, the upper end and the lower end of the body are bent by 90 degrees along opposite directions, the upper end of the body forms a limiting edge, the lower end of the body forms a connecting edge, and the limiting edge extends into the limiting groove.
Further, the upper end face of the base is provided with a boss part, and the boss part is abutted against the inner ring of the lower bearing.
Further, a rotary handle is welded on the outer wall of the disassembly sleeve.
The invention has the following beneficial effects: the invention can avoid the damage of the lower bearing in the rotor assembly process, and the extension shaft can be pulled out without mechanical equipment, thereby having low use cost and convenient manufacture.
Description of the drawings:
fig. 1 is a structural view showing a rotor mounted on a lower bearing in the prior art.
FIG. 2 is a block diagram of the tooling of the present invention for assembling a rotor on a lower bearing.
Fig. 3 is a structural diagram of the present invention.
Fig. 4 is a structural view of a base in the present invention.
Fig. 5 is a structural view of a driving plate in the present invention.
Fig. 6 is a block diagram of the stopper in the present invention.
The specific embodiment is as follows:
the invention is further described below with reference to the accompanying drawings.
As shown in fig. 2 to 6, the invention discloses a rotor mounting tool for a permanent magnet motor, which is used for mounting a rotor 200 in the permanent magnet motor in a lower bearing 500 of the permanent magnet motor, wherein the lower end of the rotor 200 is in threaded connection with an extension shaft 1, the extension shaft 1 is arranged in the lower bearing 500 in a penetrating manner, the rotor mounting tool comprises a base 2, a dismounting sleeve 3, a driving plate 4 and a limiting block 5, the base 2 is fixedly connected with a lower end cover 600 in the permanent magnet motor through screws, the upper end of the base 2 is abutted against an inner ring of the lower bearing 500, the bottom end of the extension shaft 1 penetrates through the base 2 along the axial direction of the base 2, the dismounting sleeve 3 is in threaded connection with the base 2, the driving plate 4 is fixed on the lower end face of the dismounting sleeve 3, one end of the driving plate 4 is clamped on the extension shaft 1, the limiting block 5 is fixed on the upper end face of the dismounting sleeve 3, and one end of the limiting block 5 extends on the outer wall of the base 2.
The driving plate 4 comprises two semicircular plate bodies 41, a second clamping groove 42 is formed in the center of the plate bodies 41, the second clamping groove 42 is clamped in the first clamping groove 14 on the circumferential wall of the extension shaft 1, and the second clamping groove 42 is in clearance fit with the first clamping groove 14.
A limit groove 21 is formed in the outer circumferential wall of the base 2, and the limit groove 21 is matched with the limit block 5, so as to limit the movement travel of the extension shaft 1, and further, the rotor 200 is accurately assembled into the lower bearing 500.
The limiting block 5 comprises a body 51 in a shape, the upper end and the lower end of the body 51 are bent by 90 degrees along opposite directions, the upper end forms a limiting edge 53, the lower end forms a connecting edge 52, and the limiting edge 53 extends into the limiting groove 21.
In order to facilitate better limit of the lower bearing 500, a boss portion 22 is provided on the upper end surface of the base 2, and the boss portion 22 abuts against the inner ring of the lower bearing 500.
In order to facilitate the rotation of the disassembly sleeve 3, a rotation handle 31 is welded on the outer wall of the rotation disassembly sleeve 3.
When in use, the base 2 is fixed on the lower end cover 600, the boss part 22 on the base 2 is abutted against the inner ring of the lower bearing 500, the extension shaft 1 is in threaded connection with the bottom surface of the rotor 200, the limiting block 5 is pushed to the topmost end of the limiting groove 21, then the connecting driving plate 4 is fixed on the lower end surface of the disassembling sleeve 3, and the driving plate 4 is clamped in the first clamping groove 14 of the extension shaft 1. Rotating the rotary handle 31 causes the removal sleeve 3 to drive the extension shaft 1, guiding the rotor 200 to continue to move downwards. The boss portion 22 on the base 2 abuts against the inner ring of the lower bearing 500, so that the outer ring of the lower bearing 500 is prevented from bearing downward force during the assembly process, and damage to the lower bearing is prevented.
Rotation of the removal sleeve 3 on the base 2 is effective to transfer downward force to move the rotor 200 downward against the resistance. The limit block 5 and the limit groove 21 are matched to prevent the rotor 200 from crushing the inner ring of the lower bearing 500 after being assembled in place.
When the limiting block 5 runs out of the stroke, namely the rotor 200 is assembled in place, the driving plate 4, the dismounting sleeve 3, the limiting block 5 and the base 2 are dismounted in sequence, finally the extension shaft 1 is dismounted, and the rotor is mounted by mounting the bearing seat end cover.
The invention can provide enough traction force for the rotor to be assembled in place after the rotor and the lower bearing are guided to complete centering. After the rotor is accurately centered with the lower bearing, frictional resistance generated by interference fit needs to be overcome, and at the moment, the threads between the dismounting sleeve and the base can efficiently transfer the dragging force required by overcoming the frictional force. Thereby avoiding damage to the bearing caused by knocking the rotor.
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the invention, which modifications would also be considered to be within the scope of the invention.
Claims (4)
1. A rotor installation frock for permanent-magnet machine, this frock is arranged in will rotor (200) in the permanent-magnet machine installs in permanent-magnet machine's lower bearing (500), the lower extreme threaded connection of rotor (200) has extension axle (1), and in this extension axle (1) worn to locate lower bearing (500), its characterized in that: the permanent magnet motor rotor comprises a base (2), a disassembly sleeve (3), a driving plate (4) and a limiting block (5), wherein the base (2) is fixedly connected with a lower end cover in the permanent magnet motor, the upper end of the base (2) is abutted to an inner ring of a lower bearing (500), the bottom end of a extension shaft (1) penetrates through the base (2) along the axis direction of the base (2), the disassembly sleeve (3) is in threaded connection with the base (2), the driving plate (4) is fixed on the lower end face of the disassembly sleeve (3), one end of the driving plate (4) is clamped on the extension shaft (1), the limiting block (5) is fixed on the upper end face of the disassembly sleeve (3), one end of the limiting block (5) extends onto the outer wall of the base (2), the rotation disassembly sleeve (3) is carried out, the driving plate (4) drives the extension shaft (1) downwards, and the extension shaft (1) pulls a rotor (200) downwards and installs the rotor into the lower bearing (500).
The driving plate (4) comprises two semicircular plate bodies (41), and a second clamping groove (42) is formed in the center of each plate body (41);
and a limiting groove (21) is formed in the outer circumferential wall of the base (2).
2. The rotor mounting fixture for a permanent magnet motor of claim 1, wherein: the limiting block (5) comprises a body (51) in a shape, the upper end and the lower end of the body (51) are bent by 90 degrees along opposite directions, the upper end of the body forms a limiting edge (53), the lower end of the body forms a connecting edge (52), and the limiting edge (53) extends into the limiting groove (21).
3. The rotor mounting fixture for a permanent magnet motor of claim 1, wherein: the upper end face of the base (2) is provided with a boss part (22), and the boss part (22) is abutted against the inner ring of the lower bearing (500).
4. The rotor mounting fixture for a permanent magnet motor of claim 1, wherein: the outer wall of the disassembly sleeve (3) is welded with a rotary handle (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711041426.1A CN107591977B (en) | 2017-10-30 | 2017-10-30 | Rotor mounting tool for permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711041426.1A CN107591977B (en) | 2017-10-30 | 2017-10-30 | Rotor mounting tool for permanent magnet motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107591977A CN107591977A (en) | 2018-01-16 |
| CN107591977B true CN107591977B (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711041426.1A Active CN107591977B (en) | 2017-10-30 | 2017-10-30 | Rotor mounting tool for permanent magnet motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN107591977B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649892B (en) * | 2022-05-23 | 2022-08-16 | 山西省机电设计研究院有限公司 | Motor with bearing disassembly assisting device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000134882A (en) * | 1998-10-21 | 2000-05-12 | Matsushita Electric Ind Co Ltd | Rotor of permanent magnet motor and compressor mounting it |
| JP2014030345A (en) * | 2013-08-20 | 2014-02-13 | Nissan Motor Co Ltd | Motor generator assembling method |
| CN203627555U (en) * | 2013-12-20 | 2014-06-04 | 凯迈(洛阳)机电有限公司 | Bearing mounting structure and centrifugal dryer with bearing mounting structure |
| CN204030894U (en) * | 2014-07-02 | 2014-12-17 | 苏州力久新能源科技有限公司 | A kind of magneto assembling servicing unit |
| CN105245065A (en) * | 2015-11-24 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Assembly equipment for rotor and rotor assembly method |
| CN205051533U (en) * | 2015-10-23 | 2016-02-24 | 湖北同发机电有限公司 | A assembly quality for permanent -magnet machine stator and mounting of rotors |
| CN105471203A (en) * | 2016-01-08 | 2016-04-06 | 中电电机股份有限公司 | Dovetail-shaped magnetizing magnetic steel installation device on rotor of direct-driven wind turbine generator |
| JP2016144317A (en) * | 2015-02-02 | 2016-08-08 | 東芝三菱電機産業システム株式会社 | Rotary electric machine disassembly method and rotary electric machine disassembly apparatus |
| CN106374689A (en) * | 2016-09-12 | 2017-02-01 | 湖北三江航天万峰科技发展有限公司 | Method and device for installing split type permanent-magnet torque motor in base body |
| CN207426936U (en) * | 2017-10-30 | 2018-05-29 | 南京磁谷科技有限公司 | A kind of rotor mounting tool for magneto |
-
2017
- 2017-10-30 CN CN201711041426.1A patent/CN107591977B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000134882A (en) * | 1998-10-21 | 2000-05-12 | Matsushita Electric Ind Co Ltd | Rotor of permanent magnet motor and compressor mounting it |
| JP2014030345A (en) * | 2013-08-20 | 2014-02-13 | Nissan Motor Co Ltd | Motor generator assembling method |
| CN203627555U (en) * | 2013-12-20 | 2014-06-04 | 凯迈(洛阳)机电有限公司 | Bearing mounting structure and centrifugal dryer with bearing mounting structure |
| CN204030894U (en) * | 2014-07-02 | 2014-12-17 | 苏州力久新能源科技有限公司 | A kind of magneto assembling servicing unit |
| JP2016144317A (en) * | 2015-02-02 | 2016-08-08 | 東芝三菱電機産業システム株式会社 | Rotary electric machine disassembly method and rotary electric machine disassembly apparatus |
| CN205051533U (en) * | 2015-10-23 | 2016-02-24 | 湖北同发机电有限公司 | A assembly quality for permanent -magnet machine stator and mounting of rotors |
| CN105245065A (en) * | 2015-11-24 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Assembly equipment for rotor and rotor assembly method |
| CN105471203A (en) * | 2016-01-08 | 2016-04-06 | 中电电机股份有限公司 | Dovetail-shaped magnetizing magnetic steel installation device on rotor of direct-driven wind turbine generator |
| CN106374689A (en) * | 2016-09-12 | 2017-02-01 | 湖北三江航天万峰科技发展有限公司 | Method and device for installing split type permanent-magnet torque motor in base body |
| CN207426936U (en) * | 2017-10-30 | 2018-05-29 | 南京磁谷科技有限公司 | A kind of rotor mounting tool for magneto |
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| Publication number | Publication date |
|---|---|
| CN107591977A (en) | 2018-01-16 |
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Address after: No.99 Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province (Jiangning Development Zone) Patentee after: Nanjing Cigu Technology Co.,Ltd. Address before: 211102 No. 100 Jiuzhu Road, Jiangning Development Zone, Nanjing, Jiangsu Province Patentee before: NANJING CIGU Ltd.,Corp. |
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