CN111509896B - Traction motor transportation locking device - Google Patents
Traction motor transportation locking device Download PDFInfo
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- CN111509896B CN111509896B CN202010505428.7A CN202010505428A CN111509896B CN 111509896 B CN111509896 B CN 111509896B CN 202010505428 A CN202010505428 A CN 202010505428A CN 111509896 B CN111509896 B CN 111509896B
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- conical surface
- locking
- fixing piece
- traction motor
- rotor
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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
-
- 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
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a traction motor transportation locking device, which comprises: the transportation end cover is fixedly connected with the non-bearing end of the stator base, the first fixing piece is fixedly arranged at the bearing end of the stator base, the second fixing piece is fixedly arranged relative to the rotor and is positioned at the bearing end, and the jacking structure is arranged on the rotor; the first fixing piece is provided with a locking conical surface, and the second fixing piece is provided with a matching conical surface which is matched with the locking conical surface so as to enable the rotor to be fixedly arranged relative to the stator base under the action of the jacking mechanism; the jacking structure is connected with the transportation end cover. Compared with the prior art, the traction motor transportation locking device provided by the invention has the advantages that in the process of locking the rotor, the jacking mechanism does not bear shearing force or friction force, so that the structure is safe and reliable, the service life of the jacking mechanism can be prolonged, and the reliability is improved; and the arrangement mode of the locking conical surface and the matching conical surface increases the bearing area for bearing circumferential friction force and radial force, and further increases the reliability of the structure.
Description
Technical Field
The invention relates to the technical field of motor transportation, in particular to a traction motor transportation locking device.
Background
The stator and the rotor of the motor are connected together through a bearing, the rotor has freedom degrees of radial, axial and circumferential motion, and if a locking device is not installed in the long-distance transportation process, the rotor can displace along with the vibration in the transportation process, so that the bearing generates a pseudo-bushy impression, and the bearing fails.
The non-transmission end of the motor with the double-bearing structure adopts the deep groove ball bearing, the transmission end adopts the cylindrical roller bearing, the rotating shaft can be directly axially jacked at the transmission end of the motor by utilizing the jacking device in the transportation process, the radial displacement and the axial displacement of the rotor can be limited by the friction force between the ball bearing roller and the inner ring and the outer ring, and the fixation of the rotor is realized.
And for the traction motor of single bearing structure, only be provided with a post bearing at the non-transmission end of motor, do not fix a position in the axial direction, can not bear the load, if the single bearing motor has installed the transmission gear box, utilize the gear box can bear the characteristics of axial load, the part that the non-transmission end at the motor was fixed together with the rotor part with central fastening bolt top, for example the fluted disc that tests the speed etc. prevents the axial of electric motor rotor, radial and circumferential motion, the part that is tightly pushed up in this kind of scheme need adopt the thick steel plate structure, cause the material waste, rely on the friction to fix the reliability poor to the radial of rotor, and the bolt that locking device need be dismantled to the motor during operation, change for the operation bolt, the operation process is loaded down with trivial details.
If single bearing structure traction motor does not install the transmission gear box, generally through the direct tight device in top of bolt this moment, the radial and circumference rigidity of this kind of scheme bolt is weak, and the post bearing is located non-transmission end, keeps away from the tight bolt in top, and locking effect is poor to when bearing radial load, the bolt receives the shearing force effect to lose efficacy easily, and the reliability is poor.
In summary, how to provide a transportation locking device capable of improving reliability in the transportation process of a single-bearing traction motor is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a traction motor transportation locking device, which can improve the service life of the locking device and improve the locking effect by preventing the locking structure from bearing the shearing force.
In order to achieve the above purpose, the invention provides the following technical scheme:
a traction motor transport locking device comprising: the transmission end cover is fixedly connected with the non-bearing end of the stator base, the first fixing piece is fixedly arranged at the bearing end of the stator base, the second fixing piece is fixedly arranged relative to the rotor and is positioned at the bearing end, and the jacking structure is arranged on the rotor;
the first fixing piece is provided with a locking conical surface, and the second fixing piece is provided with a matching conical surface which is used for matching with the locking conical surface so as to enable the rotor to be fixedly arranged relative to the stator base under the action of the jacking mechanism;
the jacking structure is connected with the transportation end cover.
Preferably, the first fixing piece is a motor end cover, the second fixing piece is an inner oil seal fixedly arranged on the rotor shaft, and the locking conical surface is opposite to the matching conical surface.
Preferably, the vertex angle of the locking conical surface and the matching conical surface is 60-120 degrees.
Preferably, the tail part of the locking conical surface is provided with an annular bulge, and the inner oil seal is provided with an arc surface in clearance fit with the inner annular surface of the annular bulge.
Preferably, a radial distance L2 between the inner ring surface and the circular arc surface is equal to a radial distance L1 of a labyrinth groove formed by the motor end cover and the inner oil seal.
Preferably, an axial clearance dimension L4 of the locking cone and the mating cone along the rotor shaft is smaller than an axial clearance dimension L3 of the labyrinth groove.
Preferably, the tightening structure is a tightening bolt, and the tightening bolt is in threaded connection with the transportation end cover.
Preferably, the central axis of the puller bolt coincides with the central axis of the locking conical surface.
Preferably, the transportation end cover further comprises a rubber pad which is arranged on the inner side of the transportation end cover and is in contact with the puller bolt.
Preferably, the transportation end cover is detachably connected with the coupling through a connecting bolt.
The invention provides a traction motor transportation locking device, which comprises: the transportation end cover is fixedly connected with the non-bearing end of the stator base, the first fixing piece is fixedly arranged at the bearing end of the stator base, the second fixing piece is fixedly arranged relative to the rotor and is positioned at the bearing end, and the jacking structure is arranged on the rotor; the first fixing piece is provided with a locking conical surface, and the second fixing piece is provided with a matching conical surface which is matched with the locking conical surface so as to enable the rotor to be fixedly arranged relative to the stator base under the action of the jacking mechanism; the jacking structure is connected with the transportation end cover.
In the use process, when the traction motor needs to be transported, the transportation end cover is connected with the stator base, the jacking mechanism is arranged on the transportation end cover, the second fixing piece moves along the axial direction through the jacking mechanism, and the matching conical surface is in contact with and clings to the locking conical surface.
Under the state that the locking conical surface is contacted and attached tightly with the matching conical surface, the first fixing piece is fixedly connected with the stator base, and the second fixing piece is fixedly arranged relative to the rotor, so that the locking conical surface has a supporting function on the matching conical surface and can limit the rotor to move along the radial direction; meanwhile, friction force exists between the locking conical surface and the matching conical surface, the rotor can be limited to rotate along the axial direction, the jacking mechanism jacks the rotor along the axial direction, and the rotor can be limited to move along the axial direction.
Compared with the prior art, the traction motor transportation locking device provided by the invention has the advantages that in the process of locking the rotor, the jacking mechanism does not bear shearing force or friction force, so that the structure is safe and reliable, the service life of the jacking mechanism can be prolonged, and the reliability is improved; and the arrangement mode of the locking conical surface and the matching conical surface increases the bearing area for bearing circumferential friction force and radial force, and further increases the reliability of the structure.
In addition, in the design process, the first fixing piece and the second fixing piece can be arranged into the original structural piece in the motor, extra parts are prevented from being additionally arranged, the cost is reduced, in the dismounting process, only the transportation end cover needs to be dismounted, the device is pulled out for a proper distance along the axial direction, the locking conical surface and the matching conical surface are not in contact any more, an operation device does not need to be additionally installed, and the dismounting process is convenient and easy to operate.
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 structural view of a traction motor transport locking device according to an embodiment of the present invention applied to a traction motor;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
In FIGS. 1-2:
the structure comprises a motor end cover 1, a locking conical surface 11, an annular bulge 12, a cylindrical bearing 2, an inner oil seal 3, a matching conical surface 31, an arc surface 32, a rubber pad 4, a jacking bolt 5, a transportation end cover 6, a connecting bolt 7, a coupling 8, a labyrinth groove L1, a radial distance L2 between an inner annular surface and the arc surface, a labyrinth groove L3 and a locking conical surface L4.
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 traction motor transportation locking device, which can tightly fix a rotor through the contact of a locking conical surface and a matching conical surface, so that the rotor is prevented from moving in the circumferential direction and the radial direction, and the reliability of the traction motor transportation locking device is improved.
Referring to fig. 1-2, fig. 1 is a schematic structural view of an embodiment of a traction motor transportation locking device applied to a traction motor according to the present invention; fig. 2 is a partially enlarged view of a portion a in fig. 1.
This embodiment provides a traction motor transportation locking device, includes: the transportation end cover 6 is fixedly connected with the non-bearing end of the stator base, the first fixing piece is fixedly arranged at the bearing end of the stator base, the second fixing piece is fixedly arranged relative to the rotor and is positioned at the bearing end, and the jacking structure is arranged on the rotor; the first fixing piece is provided with a locking conical surface 11, and the second fixing piece is provided with a matching conical surface 31 which is used for matching with the locking conical surface 11 so as to enable the rotor to be fixedly arranged relative to the stator base under the action of the jacking mechanism; the jacking structure is connected with the transportation end cover 6.
In the using process, when the traction motor needs to be transported, the transportation end cover 6 is connected with the stator base, the jacking mechanism is arranged on the transportation end cover 6, the second fixing piece moves along the axial direction through the jacking mechanism, and the matching conical surface 31 is in contact with and clings to the locking conical surface 11.
Preferably, the central axis of the locking cone 11 and the central axis of the mating cone 31 may be coincident with each other and may be coincident with the central axis of the rotor shaft of the traction motor.
Preferably, the transport end cap 6 can be connected to the coupling 8.
The stator frame is a combination of a stator and a structure fixedly connected with the stator, and the first fixing member is disposed on the stator frame, and mainly means that the first fixing member is fixedly disposed relative to the stator.
The first fixing piece can be any structure which is arranged at the bearing end and is fixedly connected with the stator base, can be an additionally arranged part, can also be an original structure of the traction motor, and preferably can be a motor end cover 1; the second fixing piece can be any part which is arranged at the bearing end and is fixedly arranged relative to the rotor, can be an additionally arranged part, can also be the original structure of the traction motor, preferably can be an inner oil seal 3, can also be a shaft shoulder of the rotor shaft, and can also be other structures meeting the requirements certainly; because the motor end cover 1, the inner oil seal 3 and the rotor shaft are all structures which originally exist in the traction motor, additional parts can be avoided, the number of the parts is reduced, and the cost is reduced.
Under the state that the locking conical surface 11 is contacted and attached with the matching conical surface 31, the first fixing piece is fixedly connected with the stator base, and the second fixing piece is fixedly arranged relative to the rotor, so that the locking conical surface 11 has a supporting function on the matching conical surface 31 and can limit the rotor to move along the radial direction; meanwhile, friction force exists between the locking conical surface 11 and the matching conical surface 31, the rotation of the rotor along the circumferential direction can be limited, the jacking mechanism jacks the rotor along the axial direction, and the movement of the rotor along the axial direction can be limited.
Compared with the prior art, the traction motor transportation locking device provided by the invention has the advantages that in the process of locking the rotor, the jacking mechanism does not bear shearing force or friction force, so that the structure is safe and reliable, the service life of the jacking mechanism can be prolonged, and the reliability is improved; and the arrangement mode of the locking conical surface 11 and the matching conical surface 31 increases the bearing area for bearing circumferential friction force and radial force, and further increases the reliability of the structure.
In addition, in the design process, the first fixing piece and the second fixing piece can be arranged into the original structural piece in the motor, extra parts are prevented from being additionally arranged, the cost is reduced, in the dismounting process, the transportation end cover 6 only needs to be dismounted, the device is pulled out for a proper distance along the axial direction, the locking conical surface 11 and the matching conical surface 31 are not in contact any more, an operation device does not need to be additionally installed, and the dismounting process is convenient and easy to operate.
On the basis of the above embodiment, in order to provide sufficient radial support force and circumferential friction force between the locking cone 11 and the mating cone 31, the apex angle of the locking cone 11 and the mating cone 31 may be 60 ° to 120 °.
Preferably, the vertex angle of the locking conical surface 11 and the mating conical surface 31 is 90 °, that is, the included angle between the locking conical surface 11 and the mating conical surface 31 and the central axis of the rotor shaft is 45 °.
Preferably, in order to increase the friction force between the locking taper surface 11 and the mating taper surface 31, both the locking taper surface 11 and the mating taper surface 31 may be provided as rough surfaces.
In addition to the above embodiment, the annular protrusion 12 may be provided at the tail of the locking taper surface 11, and the inner oil seal 3 may be provided with the arc surface 32 that is in clearance fit with the inner annular surface of the annular protrusion 12.
As shown in fig. 2, the tail of the locking conical surface 11 is the end far from the vertex angle of the locking conical surface 11, and the arrangement of the annular protrusion 12 and the arc surface 32 is equivalent to the addition of a section of labyrinth groove, so that the sealing effect can be achieved.
Preferably, the radial distance L2 between the inner ring surface and the circular arc surface 32 can be equal to the radial distance L1 of the labyrinth groove formed by the motor end cover 1 and the inner oil seal 3.
The radial distance L2 between the inner ring surface and the circular arc surface 32 and the radial distance L1 of the labyrinth groove formed by the motor end cover 1 and the inner oil seal 3 are equal, so that the sealing effect can be further increased.
In addition to the above embodiments, the axial clearance dimension L4 between the locking cone 11 and the mating cone 31 along the rotor axis may be smaller than the axial clearance dimension L3 of the labyrinth groove.
It should be noted that, as shown in fig. 2, the labyrinth groove is formed by matching the motor end cover 1 and the inner oil seal 3, and in the use process, since the axial clearance dimension L4 between the locking conical surface 11 and the mating conical surface 31 along the rotor shaft is smaller than the axial clearance dimension L3 of the labyrinth groove, under the condition that the locking conical surface 11 is fitted with the mating conical surface 31, a certain clearance can be ensured in the axial direction of the labyrinth groove, and the fitting between the locking conical surface 11 and the mating conical surface 31 is prevented from being influenced by the arrangement of the labyrinth groove.
On the basis of the above embodiment, the tightening structure may be a tightening bolt 5, and the tightening bolt 5 is screwed with the transportation end cover 6.
The number of the tightening bolts 5 can be 1, 2, 3 or more, and is determined according to actual conditions, in order to ensure that under the condition of tightening the tightening bolts 5, the tightening force applied to the rotor can be set to one tightening bolt 5 along the direction of the central axis of the rotor, and the central axis of the tightening bolt 5 coincides with the central axis of the locking conical surface 11, namely coincides with the central axis of the rotor shaft.
Can also be including setting up in the inboard of transportation end cover 6 and with the rubber pad 4 of the 5 contacts of puller bolt, the inboard of transportation end cover 6 indicates that transportation end cover 6 is towards the inside one side of traction motor, at the in-process of the 5 puller bolts rotor shafts of puller bolt, the setting of rubber pad 4 can avoid puller bolt 5 to cause the destruction to the rotor shaft.
For convenient dismantlement, can make transportation end cover 6 be connected with shaft coupling 8 through connecting bolt 7, shaft coupling 8 and rotor shaft interference fit, through the fixed relative setting of location tang between transportation end cover 6 and the stator frame, at the in-process of dismantling, only need with connecting bolt 7 dismantle alright with dismantling transportation end cover 6.
It should be noted that the first and second fixing members mentioned in this document are only for limiting the difference of the positions, and are not in sequence, and in addition, the traction motor transportation locking device mentioned in this document is mainly applicable to a traction motor with a single bearing and a cylindrical bearing, and of course, a mode of applying the traction motor transportation locking device to other types of motors through simple improvement is also within the protection scope of the present invention.
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 traction motor transportation locking device provided by the invention is 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 (7)
1. A traction motor transportation locking device, comprising: the transmission end cover (6) is fixedly connected with the non-bearing end of the stator base, the first fixing piece is fixedly arranged at the bearing end of the stator base, the second fixing piece is fixedly arranged relative to the rotor and is positioned at the bearing end, and the jacking structure is arranged on the second fixing piece;
the first fixing piece is provided with a locking conical surface (11), and the second fixing piece is provided with a matching conical surface (31) which is used for matching with the locking conical surface (11) so as to enable the rotor to be fixedly arranged relative to the stator base under the action of the jacking structure;
the jacking structure is connected with the transportation end cover (6);
the first fixing piece is a motor end cover (1), the second fixing piece is an inner oil seal (3) fixedly arranged on the rotor shaft, and the locking conical surface (11) and the matching conical surface (31) are arranged oppositely;
the tail part of the locking conical surface (11) is provided with an annular bulge (12), and the inner oil seal (3) is provided with an arc surface (32) in clearance fit with the inner annular surface of the annular bulge (12);
the radial distance L2 between the inner ring surface and the circular arc surface (32) is equal to the radial distance L1 of a labyrinth groove formed by the motor end cover (1) and the inner oil seal (3).
2. Traction motor transport locking device according to claim 1, characterized in that the apex angle of the locking cone (11) and the mating cone (31) is 60 ° -120 °.
3. Traction motor transport locking device according to claim 1, characterized in that the axial clearance dimension L4 of the locking cone (11) and the mating cone (31) along the rotor shaft is smaller than the axial clearance dimension L3 of the labyrinth groove.
4. Traction motor transport locking device according to any of claims 1-3, characterized in that the tightening structure is a tightening bolt (5) and the tightening bolt (5) is in threaded connection with the transport end cap (6).
5. Traction motor transport locking device according to claim 4, characterized in that the centre axis of the jacking bolt (5) coincides with the centre axis of the locking cone (11).
6. The traction motor transportation locking device according to claim 5, further comprising a rubber pad (4) disposed inside the transportation end cover (6) and contacting with the puller bolt (5).
7. Traction motor transport locking device according to claim 4 characterized in that the transport end cap (6) is detachably connected to the coupling (8) by means of connecting bolts (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010505428.7A CN111509896B (en) | 2020-06-05 | 2020-06-05 | Traction motor transportation locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010505428.7A CN111509896B (en) | 2020-06-05 | 2020-06-05 | Traction motor transportation locking device |
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| CN111509896A CN111509896A (en) | 2020-08-07 |
| CN111509896B true CN111509896B (en) | 2021-09-07 |
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| CN202010505428.7A Active CN111509896B (en) | 2020-06-05 | 2020-06-05 | Traction motor transportation locking device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713726B (en) * | 2020-12-25 | 2022-11-29 | 中车永济电机有限公司 | Traction motor bearing transportation protection tool with shaft extension |
| CN113691070B (en) * | 2021-08-25 | 2022-07-05 | 中车株洲电机有限公司 | Motor structure and bearing replacement method thereof |
| EP4184767B1 (en) * | 2021-11-23 | 2024-09-18 | Abb Schweiz Ag | Electric machine assembly and method for locking rotor to stator |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60193499U (en) * | 1984-06-04 | 1985-12-23 | 株式会社東芝 | Motor casing mounting device |
| US6118620A (en) * | 1997-11-05 | 2000-09-12 | Seagate Technology Llc | In-hub spindle motor with separate fluid dynamic bearings |
| DE10036765A1 (en) * | 2000-07-28 | 2002-02-07 | Schaeffler Waelzlager Ohg | Diverting roller for traction drive has pot-like insertion part in inner ring of roller bearing for transporting lock |
| JP2010226927A (en) * | 2009-03-25 | 2010-10-07 | Toshiba Corp | Bearing device of rotary electric machine for railway vehicle |
| CN104967249B (en) * | 2015-07-21 | 2017-12-01 | 南车株洲电机有限公司 | Traction electric machine transport protection device and traction electric machine transport protection method |
| CN205453426U (en) * | 2016-03-23 | 2016-08-10 | 中车永济电机有限公司 | Bearing protector is used in motor transportation |
| CN110695920B (en) * | 2019-11-14 | 2021-07-06 | 中车株洲电机有限公司 | Dismounting device of traction motor bearing |
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