CN110729865A - Dismounting device and method for traction motor bearing - Google Patents
Dismounting device and method for traction motor bearing Download PDFInfo
- Publication number
- CN110729865A CN110729865A CN201911114001.8A CN201911114001A CN110729865A CN 110729865 A CN110729865 A CN 110729865A CN 201911114001 A CN201911114001 A CN 201911114001A CN 110729865 A CN110729865 A CN 110729865A
- Authority
- CN
- China
- Prior art keywords
- bearing
- traction motor
- rotor assembly
- dismounting
- eccentric pin
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a dismounting device of a traction motor bearing, which comprises: fixing means for fixing the rotor assembly in both the axial and radial directions and separating means for separating the bearing from a central shaft for mounting the bearing; the separating device is provided with a connecting part which is fixedly connected with the bearing. The dismounting device for the traction motor bearing provided by the invention can avoid dismounting the rotor assembly and the stator assembly, so that the dismounting process of the bearing is simplified, meanwhile, the dismounting time of the bearing is shortened, and the working efficiency is improved; in addition, the dismounting device of the traction motor bearing provided by the invention can be applied to a motor with a single-end bearing, can also be applied to a motor with two-end bearings, and has a wide application range. The invention also discloses a method for disassembling the traction motor bearing, which is applied to the device for disassembling the traction motor bearing.
Description
Technical Field
The invention relates to the technical field of motor maintenance, in particular to a dismounting device for a traction motor bearing. In addition, the invention also relates to a method applied to the dismounting device of the traction motor bearing.
Background
As shown in fig. 1, a rotor 01 of a traction motor in the prior art is mounted on a central shaft, and with the high-speed development of rail transit, the operation and maintenance requirements and the technical level of rail vehicles are increasing. The working state and the maintenance requirement of each part on the vehicle are different, and the bearing of the traction motor is a core stressed part, so that the detection or the replacement is required within the specified time or kilometers in order to ensure the running safety of the vehicle and ensure the abnormal key of the overhauling and maintenance work of the bearing.
The traction motor bearing needs to be periodically overhauled or replaced, and in the prior art, when the traction motor bearing is overhauled or replaced, the motor needs to be dropped to return to a factory, a special tool is adopted to disassemble the motor, the stator and the rotor are separated, and then the bearing is pulled out to be detected or replaced. The whole disassembly period is long, the process is complicated, a specific field and a special tool are needed, and the overhaul cost and the overhaul resource consumption are high. Especially when the faulty bearing needs to be disassembled, the above process cannot be simplified, so that the time span for fault analysis and solution is very large, and the normal production process is influenced.
In summary, how to provide a device for replacing a bearing without separating a stator from a rotor is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a dismounting device for a traction motor bearing, which can replace the bearing without dismounting a stator and a rotor.
Another object of the present invention is to provide a method for applying to the dismounting device of the traction motor bearing.
In order to achieve the above purpose, the invention provides the following technical scheme:
a dismounting device for a traction motor bearing, comprising: fixing means for fixing the rotor assembly both axially and radially and separating means for separating the bearing from a central shaft for mounting the bearing; the separating device is provided with a connecting part which is fixedly connected with the bearing.
Preferably, the fixing device comprises an upper fixing part matched with the positioning groove on the upper half part of the rotor assembly and a lower fixing part matched with the positioning groove on the lower half part of the rotor assembly.
Preferably, the upper fixing part and the lower fixing part are both eccentric pin structures, the upper fixing part comprises at least one eccentric pin structure, and the lower fixing part comprises at least one eccentric pin structure.
Preferably, the eccentric pin structure comprises a first cylindrical section and a second cylindrical section, the first cylindrical section is used for being in contact with an optical hole of an end cover, the second cylindrical section is used for being matched with the rotor pressing ring groove, the diameter of the first cylindrical section is larger than that of the second cylindrical section, and the central axes of the first cylindrical section and the second cylindrical section are not coincident.
Preferably, the separating device comprises a clamping part for clamping and connecting with the outer ring of the bearing.
Preferably, the separating device is a bearing sleeve.
A method for disassembling a traction motor bearing is applied to a device for disassembling the traction motor bearing, and comprises the following steps:
fixing a rotor assembly so that the rotor assembly is fixed in both radial and axial directions;
and pulling out the bearing needing to be disassembled.
Preferably, the extracting the bearing to be disassembled includes:
pulling out a bearing which needs to be disassembled at the fixed end of the rotor assembly;
installing a new bearing at the fixed end;
pulling out a bearing which is required to be disassembled at the floating end of the rotor assembly;
installing the new bearing at the floating end.
Preferably, after the bearing needing to be disassembled at the fixed end of the rotor assembly is pulled out, before a new bearing is installed at the fixed end, the method includes:
cleaning the bearing chamber of the fixed end, and adding new grease.
Preferably, after the bearing needing to be disassembled at the floating end of the rotor assembly is pulled out; said prior to installing said new bearing at said floating end, comprising:
cleaning the bearing chamber of the floating end and adding new grease.
The invention provides a dismounting device of a traction motor bearing, comprising: fixing means for fixing the rotor assembly in both the axial and radial directions and separating means for separating the bearing from a central shaft for mounting the bearing; the separating device is provided with a connecting part which is fixedly connected with the bearing.
Compared with the prior art, the dismounting device for the traction motor bearing can avoid dismounting the rotor assembly and the stator assembly, simplify the dismounting process of the bearing, shorten the dismounting time of the bearing and improve the working efficiency; in addition, the dismounting device of the traction motor bearing provided by the invention can be applied to a motor with a single-end bearing, can also be applied to a motor with two-end bearings, and has a wide application range.
In addition, the invention also provides a method for disassembling the traction motor bearing, which is applied to the device for disassembling the traction motor bearing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a prior art mounting structure for a traction motor bearing;
FIG. 2 is a schematic structural diagram of a mounting position of a dismounting device of a traction motor bearing in the traction motor provided by the invention;
FIG. 3 is a schematic illustration of the bearing removal process of FIG. 2;
FIG. 4 is a schematic diagram of a first embodiment of an eccentric pin configuration in a motor end cap subsection;
FIG. 5 is a schematic diagram of a second embodiment of an eccentric pin configuration in a motor end cap subsection;
FIG. 6 is a schematic view of the location of an eccentric mounting hole in a single bearing motor;
FIG. 7 is a schematic illustration of a bearing removal process in a single bearing motor;
FIG. 8 is a front view of an eccentric configuration;
FIG. 9 is a right side view of the eccentric configuration of FIG. 8;
fig. 10 is a schematic flow chart of a method for disassembling a traction motor bearing provided by the present invention.
In FIGS. 1-10:
01 is rotor, 1 is rotor clamping ring, 2 is motor end cover, 3 is oil seal, 4 is bearing housing, 5 is central shaft, 6 is eccentric pin structure, 7 is end ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a dismounting device for a traction motor bearing, which can simplify the dismounting process of the bearing and shorten the dismounting time. The other core of the invention is to provide a method for disassembling the traction motor bearing, which is applied to the device for disassembling the traction motor bearing.
Referring to fig. 1-10, fig. 1 is a schematic view illustrating an installation structure of a traction motor bearing in the prior art; FIG. 2 is a schematic structural diagram of a mounting position of a dismounting device of a traction motor bearing in the traction motor provided by the invention; FIG. 3 is a schematic illustration of the bearing removal process of FIG. 2; FIG. 4 is a schematic diagram of a first embodiment of an eccentric pin configuration in a motor end cap subsection; FIG. 5 is a schematic diagram of a second embodiment of an eccentric pin configuration in a motor end cap subsection; FIG. 6 is a schematic view of the location of an eccentric mounting hole in a single bearing motor; FIG. 7 is a schematic illustration of a bearing removal process in a single bearing motor; FIG. 8 is a front view of an eccentric configuration; FIG. 9 is a right side view of the eccentric configuration of FIG. 8; fig. 10 is a schematic flow chart of a method for disassembling a traction motor bearing provided by the present invention.
This concrete embodiment provides a dismounting device of traction motor bearing, includes: fixing means for fixing the rotor assembly both axially and radially and separating means for separating the bearing from the central shaft 5; the separating apparatus is provided with a connecting portion for fixed connection with a bearing, and the central shaft 5 is used for mounting the bearing.
In the process of disassembling the bearing of the traction motor, the rotor assembly can be positioned through the fixing device firstly, the fixing device can enable the rotor assembly to realize circumferential and radial positioning, and then the bearing is taken out and disassembled through the separating device.
Compared with the prior art, the dismounting device for the traction motor bearing provided by the embodiment can avoid dismounting the rotor assembly and the stator assembly, simplify the dismounting process of the bearing, shorten the dismounting time of the bearing and improve the working efficiency; in addition, the dismounting device of the traction motor bearing provided by the invention can be applied to a motor with a single-end bearing, can also be applied to a motor with two-end bearings, and has a wide application range.
On the basis of the above embodiment, the fixing device may include an upper fixing portion engaged with the positioning groove of the upper half portion of the rotor assembly, and a lower fixing portion engaged with the positioning groove of the lower half portion of the rotor assembly.
It should be noted that the positioning groove may be disposed in the rotor pressing ring 1, or in the end ring 7, or may be disposed in other component structures fixedly connected to the rotor 01, which is determined according to actual situations, and is not described herein again.
The upper half of the rotor assembly means that the rotor is separated into two parts having equal volumes in the upper and lower directions by a cross section parallel to the horizontal plane in the mounted state of the rotor, wherein the upper part is the upper half and the lower part is the lower half.
The fixing device is arranged on the lower half portion of the rotor assembly, so that the supporting effect can be achieved, and the rotor assembly is fixed and more stable.
On the basis of the above embodiment, the upper fixing portion and the lower fixing portion may be both the eccentric pin structure 6, and the upper fixing portion includes at least one eccentric pin structure 6, and the lower fixing portion includes at least one eccentric pin structure 6.
It should be noted that, when the traction motor is a single-bearing motor, the upper fixing portion includes at least one eccentric pin structure 6, and the lower fixing portion includes at least one eccentric pin structure 6, and when the traction motor is a dual-bearing motor, the upper fixing portion includes at least two eccentric pin structures 6, and the lower fixing portion includes at least two eccentric pin structures 6.
In addition, the eccentric pin structure 6 is adopted to solve two problems: firstly, the size precision of the inner circular surface of the end ring 7 of the motor or the inner circular surface of the groove of the rotor pressing ring 1 does not need to be too high, the size precision can be within an allowable deviation range, and generally, an error can exist within 1mm, so that the positioning precision of the eccentric pin structure 6 and the matching difficulty of the eccentric pin structure 6 and the inner circular surface are reduced; and secondly, the eccentric pin can generate a certain radial clamping force to ensure stable contact with the inner circular surface with a certain pretightening force, and finally, the purpose of simply and reliably supporting the rotor is achieved.
Meanwhile, the eccentric pin is in small clearance fit with the unthreaded hole on the end cover, and after the eccentric pin is in contact with the inner circular surface of the rotor groove and is stressed, a larger supporting reaction force exists at the unthreaded hole of the end cover due to the action of the cantilever beam, so that a larger friction force can be generated at the fit position to provide an axial positioning effect for the rotor.
The eccentric distance, the diameter and the rigidity requirement of the eccentric pin, the central position of an end cover unthreaded hole, the size of the inner circular surface of an end ring 7 of a motor or the size of the inner circular surface of a groove of a rotor pressing ring 1 need to be reasonably designed to realize the functions of self-locking of the eccentric pin and radial and axial positioning of a rotor.
Considering that the motor is horizontally arranged, the eccentric pins are intensively distributed on the upper half part to bear most of the weight of the rotor, and the two eccentric pins are arranged below the horizontal line to prevent the rotor from moving upwards or leftwards and rightwards.
On the basis of the above embodiment, the structure of the eccentric pin may be further defined, such that the eccentric pin structure 6 includes a first cylindrical section for contacting with the optical hole of the end cover and a second cylindrical section for groove-fitting with the rotor clamping ring 1, and the diameter of the first cylindrical section is larger than that of the second cylindrical section, and the central axes of the first cylindrical section and the second cylindrical section are not coincident.
Preferably, the end of the eccentric structure 6 is provided with a square head for facilitating the use of a wrench.
As shown in fig. 8 and 9, the first cylindrical section is used for matching with the through hole on the motor end cover 2, and the second cylindrical section is used for matching with the positioning groove, during the use process, the eccentric pin structure 6 can be inserted into the through hole on the upper half part of the motor end cover 2 until the second cylindrical section enters the positioning groove, and the eccentric pin structure 6 is moved continuously until the end part of the eccentric pin structure 6 contacts with the bottom surface of the positioning groove, and then the eccentric pin is rotated to make the outer surface of the second cylindrical section fit with the upper surface of the positioning groove; then, insert eccentric pin structure 6 in the through-hole that is located the latter half in motor end cover 2, until the second cylinder section gets into positioning groove, and continue to remove eccentric pin structure 6, until the tip of eccentric pin structure 6 and positioning groove's bottom surface contact, then rotatory eccentric pin makes the surface of second cylinder section and positioning groove's lower surface laminating, realizes rotor assembly's location.
As shown in fig. 4 and 5, the eccentric pin structures 6 are preferably symmetrically distributed about the central axis 5 in the vertical direction of the motor cover 2.
It should be noted that, as shown in fig. 2 and 3, in the dual-bearing motor, the eccentric pin structures 6 at both ends are matched with the positioning grooves to achieve radial positioning of the rotor assembly, and meanwhile, because the eccentric pin structures 6 are inserted from the through holes of the motor end cover 2 and have a bending tendency under the action of gravity of the rotor assembly, friction force is generated between the eccentric pin structures 6 and the inner walls of the through holes of the motor end cover 2, and axial positioning of the rotor assembly can be achieved; when the traction motor is a single-bearing motor, the positioning principle is the same.
On the basis of the above embodiment, in order to make the dismantlement process of bearing more convenient, can make separator including the joint portion that is used for being connected with the outer lane joint of bearing, when dismantling the bearing, can realize through pulling out separator.
The clamping part can be a boss which is convexly arranged on the separating device, and can also be of other structures, and is determined according to actual conditions.
Preferably, the separating device is a bearing sleeve 4, and the specific structure of the bearing sleeve 4 needs to be determined according to the type of the bearing; for example, the size of the inner ring of the bearing sleeve 4 may be smaller than that of the outer ring of the bearing, so as to achieve an interference fit, or a buckle for clamping and fixing the bearing may be provided.
In addition to the dismounting device of the traction motor bearing, the invention also provides a method applied to the dismounting device of the traction motor bearing disclosed in the above embodiment, and the dismounting method of the traction motor bearing comprises the following steps:
step S1, the rotor assembly is fixed such that the rotor assembly is fixed in both radial and axial directions.
And step S2, pulling out the bearing needing to be disassembled.
Compared with the prior art, the dismounting method of the traction motor bearing disclosed in the embodiment does not need to dismount the rotor assembly and move the rotor assembly, so that the dismounting process of the bearing is more convenient, and the dismounting time of the bearing is shortened.
The step S2 includes:
and step S21, pulling out the bearing of which the fixed end of the rotor assembly needs to be detached.
In step S22, a new bearing is mounted on the fixed end.
And step S23, extracting the bearing of the floating end of the rotor assembly needing to be disassembled.
Step S24, a new bearing is installed at the floating end.
In this embodiment, when the in-process of dismantling the bearing of duplex bearing motor, the rotor subassembly location after, need not repeated location, alright in order to accomplish the dismantlement and the installation of both ends bearing, simplified the dismantlement process of bearing.
Between the above steps S21 and S22, the method further includes:
step S211, cleaning the bearing chamber of the fixed end, and adding new grease.
Between the above step S23 and step S24, the method includes:
step S231, the bearing chamber of the floating end is cleaned, and new grease is added.
As shown in fig. 2-5, the mounting schematic diagram of the dismounting device for the traction motor bearing in the two-end bearing motor is shown, the motor end covers 2 at the two ends are all provided with through holes for mounting the eccentric pin structure 6, 4 of the eccentric pin structure 6 are located at the upper half part, two of the eccentric pin structure are located at the lower half part, the central shaft 5 is provided with an oil seal 3, the outer peripheral part of the bearing is sleeved with a bearing sleeve 4, and the specific dismounting process of the bearing is as follows:
removing the outer ring of the bearing and the fastening bolt, inserting the eccentric pin structure 6 from the two ends of the end cover and rotating to clamp the inner circular surface of the rotor in the radial direction, wherein the inner circular surface of the end ring 7 can be the inner circular surface of the groove of the rotor pressing ring 1; the bearing sleeve 4 of the pull-out positioning end is taken out of the bearing, or the positioning end bearing is pulled out through a groove reserved in a bearing chamber; cleaning a bearing chamber at the positioning end, adding new grease, and preparing to press a new bearing; pressing the new bearing at the positioning end into the bearing sleeve 4; pressing the inner and outer rings of the new bearing with the bearing sleeve 4 at the positioning end to a theoretical position, and fastening the mounting bolt of the inner bearing seat; pulling out the bearing seat and the bearing at the floating end, and pulling out the inner ring of the bearing at the floating end by induction heating; cleaning a bearing chamber at the floating end, adding new grease, and preparing to press a new bearing; the inner ring of the new bearing at the floating end is installed in place, and the outer ring is pressed into the bearing sleeve 4; and (5) fastening the floating end bearing sleeve 4 in place, and finishing the replacement of the bearing.
As shown in fig. 6 and 7, the single-bearing motor is provided with the cylindrical bearing only at the non-transmission end, the transmission end motor is directly connected with the gear box without an end cover, the rotating shaft is connected with a pinion shaft on the gear box through a flexible coupling to transmit torque, the pinion shaft is arranged on the gear box, and radial support and axial positioning are performed through two cylindrical bearings and one ball bearing. I.e. the axial direction of the traction motor rotor is also positioned. Therefore, before the bearing is disassembled, only the motor rotor needs to be radially supported and fixed, and the axis of the rotor is kept consistent with the original position.
The motor end cover 2 of the single-bearing motor is provided with a through hole for enabling the eccentric pin structure 6 to be inserted, the rotor pressing ring 1 on one side is provided with a positioning groove used for being matched with the eccentric pin structure 6, and the dismounting process of the bearing in the single-bearing motor is as follows:
removing the outer bearing cover and the fastening bolt, inserting the eccentric pin structure 6, rotating for a certain angle, and clamping the inner circular surface of the rotor assembly in the radial direction, wherein the inner circular surface can be the inner circular surface of the end ring 7 or the inner circular surface of the groove of the rotor pressing ring 1; pulling out the bearing sleeve 4 to bring out the bearing, and pulling out the inner ring of the bearing by induction heating; cleaning a bearing chamber, adding new grease, and preparing to press a new bearing; pressing the new bearing into the bearing sleeve 4; and pressing the inner ring and the outer ring of the new bearing of the bearing sleeve 4 to a theoretical position, fastening the mounting bolt of the bearing sleeve 4, and finishing the replacement of the bearing.
It should be noted that, in the dismounting device and method for the traction motor bearing mentioned in the present application, the eccentric pin structure 6 is adopted to support the rotor, so as to ensure that under-constraint or over-constraint is not generated, the requirement on the positioning accuracy is not high, and the operation is simple. The motor does not need to be additionally provided with additional parts; the online replacement technology that the motor does not fall off can be realized.
It should be further noted that the references to the first and second cylindrical sections in this document are only for distinguishing the difference in position and are not to be construed as a sequential order.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.
The device and the method for disassembling the traction motor bearing provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A dismounting device of a traction motor bearing is characterized by comprising: fixing means for fixing the rotor assembly both axially and radially and separating means for separating the bearing from a central shaft (5) for mounting said bearing; the separating device is provided with a connecting part which is fixedly connected with the bearing.
2. The dismounting device for the traction motor bearing according to claim 1, wherein the fixing device comprises an upper fixing portion for cooperating with the positioning groove of the upper half portion of the rotor assembly and a lower fixing portion for cooperating with the positioning groove of the lower half portion of the rotor assembly.
3. The dismounting device of traction motor bearing according to claim 2, characterized in that said upper fixing portion and said lower fixing portion are both eccentric pin structures (6), and said upper fixing portion comprises at least one of said eccentric pin structures (6), and said lower fixing portion comprises at least one of said eccentric pin structures (6).
4. The dismounting device of the traction motor bearing according to claim 3, characterized in that the eccentric pin structure (6) comprises a first cylindrical section for contacting with the unthreaded hole of the end cover and a second cylindrical section for groove-fitting with the rotor clamping ring (1), and the diameter of the first cylindrical section is larger than that of the second cylindrical section, and the central axis of the first cylindrical section and the central axis of the second cylindrical section are not coincident.
5. The dismounting device for the traction motor bearing is characterized in that the separating device comprises a clamping part used for being connected with an outer ring of the bearing in a clamping mode.
6. A dismounting device for a traction motor bearing according to claim 5, characterized in that said separating device is a bearing housing (4).
7. A method for dismounting a traction motor bearing, which is applied to a dismounting device of a traction motor bearing according to any one of the claims 1-6, and is characterized by comprising the following steps:
fixing a rotor assembly so that the rotor assembly is fixed in both radial and axial directions;
and pulling out the bearing needing to be disassembled.
8. The method for removing a bearing of a traction motor according to claim 7, wherein the extracting the bearing to be removed comprises:
pulling out a bearing which needs to be disassembled at the fixed end of the rotor assembly;
installing a new bearing at the fixed end;
pulling out a bearing which is required to be disassembled at the floating end of the rotor assembly;
installing the new bearing at the floating end.
9. The method for disassembling a traction motor bearing according to claim 8, wherein after the bearing needing to be disassembled at the fixed end of the rotor assembly is pulled out, and before a new bearing is installed at the fixed end, the method comprises the following steps:
cleaning the bearing chamber of the fixed end, and adding new grease.
10. The method of removing a traction motor bearing according to claim 8, wherein said removing a bearing requiring removal of a floating end of said rotor assembly is followed by said removing; said prior to installing said new bearing at said floating end, comprising:
cleaning the bearing chamber of the floating end and adding new grease.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114001.8A CN110729865A (en) | 2019-11-14 | 2019-11-14 | Dismounting device and method for traction motor bearing |
| PCT/CN2019/121874 WO2021093034A1 (en) | 2019-11-14 | 2019-11-29 | Device for removing traction motor bearing, and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114001.8A CN110729865A (en) | 2019-11-14 | 2019-11-14 | Dismounting device and method for traction motor bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110729865A true CN110729865A (en) | 2020-01-24 |
Family
ID=69224166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911114001.8A Pending CN110729865A (en) | 2019-11-14 | 2019-11-14 | Dismounting device and method for traction motor bearing |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110729865A (en) |
| WO (1) | WO2021093034A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676012A (en) * | 2021-08-23 | 2021-11-19 | 中车株洲电机有限公司 | Auxiliary motor bearing replacement tool and motor bearing replacement method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4939894B2 (en) * | 2006-10-13 | 2012-05-30 | 株式会社東芝 | Electric motor |
| CN103026593A (en) * | 2010-10-06 | 2013-04-03 | 三菱电机株式会社 | Rotary electrical device, bearing attachment and detachment tool, and bearing replacement method |
| CN103563224A (en) * | 2011-06-02 | 2014-02-05 | 三菱电机株式会社 | Dynamo-electric machine and bearing replacement method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009107790A (en) * | 2007-10-31 | 2009-05-21 | Hitachi Ltd | Elevator and winding machine and motor used therefor |
-
2019
- 2019-11-14 CN CN201911114001.8A patent/CN110729865A/en active Pending
- 2019-11-29 WO PCT/CN2019/121874 patent/WO2021093034A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4939894B2 (en) * | 2006-10-13 | 2012-05-30 | 株式会社東芝 | Electric motor |
| CN103026593A (en) * | 2010-10-06 | 2013-04-03 | 三菱电机株式会社 | Rotary electrical device, bearing attachment and detachment tool, and bearing replacement method |
| CN103563224A (en) * | 2011-06-02 | 2014-02-05 | 三菱电机株式会社 | Dynamo-electric machine and bearing replacement method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676012A (en) * | 2021-08-23 | 2021-11-19 | 中车株洲电机有限公司 | Auxiliary motor bearing replacement tool and motor bearing replacement method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021093034A1 (en) | 2021-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110829746B (en) | Dismounting device for traction motor bearing and method applied to dismounting device | |
| CN110695920B (en) | Dismounting device of traction motor bearing | |
| US4716648A (en) | Methods of securing a stator in an electrical machine | |
| CN113691070B (en) | Motor structure and bearing replacement method thereof | |
| US20190368550A1 (en) | Coupling for power generation system | |
| CN110829745B (en) | Disassembly-free motor bearing disassembling and assembling method | |
| CN110729865A (en) | Dismounting device and method for traction motor bearing | |
| CN113726086B (en) | Motor structure and bearing dismounting method thereof | |
| CN102865289A (en) | Conveniently-assembled combined shaft | |
| CN112713694B (en) | Non-transmission end bearing mounting structure of traction motor | |
| US4389202A (en) | Shearing pin moment of rotation limiting arrangement for two constructional units that are rotatable relative to one another | |
| CN211135546U (en) | Machine tool | |
| CN110962502B (en) | Elastic wheel for railway vehicle, use method of elastic wheel and independent wheel set | |
| CN217130113U (en) | Bearing mounting structure and automation device | |
| CN213322518U (en) | Driven shaft transmission device | |
| CN110729859B (en) | Disassembly-free motor bearing replacement process | |
| CN213981702U (en) | Connecting shaft rotating tool of driving gear box | |
| CN218488262U (en) | Disassembly tool for engine core machine in dead locking state | |
| CN112298544B (en) | Connecting mechanism and dismounting method of engine and main speed reducer and helicopter | |
| CN110369735B (en) | Machine tool | |
| CN202790051U (en) | Built-up shaft convenient to assemble and disassemble | |
| CN217776876U (en) | Motor bearing assembly and disassembly tools | |
| CN218655556U (en) | Balance mechanism | |
| CN211693260U (en) | Bearing component for stacker wheel set and stacker wheel set | |
| CN112398292B (en) | Method for replacing non-disassembly integral bearing of hollow shaft permanent magnet traction motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200124 |
|
| RJ01 | Rejection of invention patent application after publication |