阅读说明：本技术 一种牵引电机轴承的拆卸装置及应用于该装置的方法 (Dismounting device for traction motor bearing and method applied to dismounting device ) 是由 唐子谋 申政 汤黎明 胡贵 李广 成熹 唐赢武 崔斯柳 张道禄 杨莺 张诚诚 于 2019-11-14 设计创作，主要内容包括：本发明公开了一种牵引电机轴承的拆卸装置，包括：用于固定设置于转子组件的定位机构以及相对于定位机构可移动设置的移动机构；定位机构设置有定位面，移动机构设置有用于与定位面配合、以使转子组件实现径向与轴向定位的配合面。相比于现有技术，本发明提供的牵引电机轴承的拆卸装置，避免了转子组件与定子组件分离后进行轴承的拆卸过程，使牵引电机轴承的拆卸过程得以简化，降低了轴承拆卸过程中的人力资源与物力资源的配置需求和成本，缩短了牵引电机轴承的拆卸时间，提高了工作效率。本发明还公开了一种应用于牵引电机轴承的拆卸装置的牵引电机轴承的拆卸方法。(The invention discloses a dismounting device of a traction motor bearing, which comprises: the positioning mechanism is used for being fixedly arranged on the rotor assembly, and the moving mechanism is movably arranged relative to the positioning mechanism; the positioning mechanism is provided with a positioning surface, and the moving mechanism is provided with a matching surface which is used for matching with the positioning surface so as to realize radial and axial positioning of the rotor assembly. Compared with the prior art, the dismounting device for the traction motor bearing provided by the invention has the advantages that the bearing dismounting process after the rotor assembly is separated from the stator assembly is avoided, the dismounting process of the traction motor bearing is simplified, the configuration requirements and the cost of human resources and material resources in the bearing dismounting process are reduced, the dismounting time of the traction motor bearing is shortened, and the working efficiency is improved. The invention also discloses a method for disassembling the traction motor bearing, which is applied to the device for disassembling the traction motor bearing.)

1. A dismounting device of a traction motor bearing is characterized by comprising: the positioning mechanism is used for being fixedly arranged on the rotor assembly, and the moving mechanism is movably arranged relative to the positioning mechanism;

the positioning mechanism is provided with a positioning surface (6), and the moving mechanism is provided with a matching surface (7) which is used for being matched with the positioning surface (6) so as to enable the rotor assembly to realize radial and axial positioning.

2. The dismounting device of a traction motor bearing according to claim 1, characterized in that said moving mechanism is an inner bearing seat (8), said mating surface (7) being arranged inside said inner bearing seat (8).

3. The dismounting device of the traction motor bearing according to claim 1, characterized in that the positioning surface (6) is a bevel or a spherical surface.

4. A dismounting device for a traction motor bearing according to claim 3, wherein when said positioning surface (6) is a bevel, the angle of inclination of said bevel is 40 ° to 50 °.

5. The dismounting device of the traction motor bearing according to claim 4, wherein the positioning mechanism is an oil seal (3) fixedly arranged on the rotor assembly, the positioning surface (6) is arranged on an outer side surface of the oil seal (3), and the outer side surface is arranged in a direction of the oil seal (3) departing from a rotor in the rotor assembly.

6. The dismounting device of the traction motor bearing according to any one of claims 1 to 5, further comprising a detaching mechanism for detaching the bearing, wherein the detaching mechanism is movably disposed relative to the positioning mechanism.

7. The dismounting device of the traction motor bearing according to claim 6, characterized in that the separation mechanism is a bearing sleeve (4), and the bearing sleeve (4) is provided with a clamping part for clamping with an outer ring of the bearing.

8. 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 1-7, and is characterized by comprising the following steps:

positioning the rotor assembly axially and radially;

and (5) disassembling the bearing.

9. The method of removing a traction motor bearing according to claim 8, wherein said removing a bearing comprises:

pulling out bearings at two ends of the rotor assembly;

and installing new bearings at two ends of the rotor assembly.

10. The method for disassembling a bearing of a traction motor according to claim 9, wherein after installing new bearings at both ends of the rotor assembly, the method comprises:

and returning the rotor assembly to the center.

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

The development of rail transit is more and more rapid, and the operation and maintenance requirements and the technical level of rail vehicles are also increasing day by day. The bearing of the traction motor is a core stressed component, and in order to ensure the running safety of a vehicle, the maintenance work of the bearing is abnormal and critical, and the bearing needs to be detected or replaced within the specified time or kilometers.

The traction motor bearing needs to be overhauled or replaced regularly, and in the prior art, when the traction motor bearing is overhauled or replaced, the motor needs to be dropped to the factory and returned to the 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 needing to disassemble trouble bearing, above-mentioned flow can't be simplified, leads to that the time span of fault analysis solution is very big, has influenced normal production process, and the mounting means of traction motor bearing among the prior art is shown as figure 1, and wherein rotor 01 sets up in the center pin.

In summary, how to provide a device for simplifying the dismounting process of the traction motor bearing is an urgent 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 simplify the dismounting process of the traction motor bearing and avoid dismounting the rotor assembly and the stator assembly.

Another object of the present invention is to provide a method for dismounting a traction motor bearing applied 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: the positioning mechanism is used for being fixedly arranged on the rotor assembly, and the moving mechanism is movably arranged relative to the positioning mechanism;

the positioning mechanism is provided with a positioning surface, and the moving mechanism is provided with a matching surface which is used for being matched with the positioning surface so as to enable the rotor assembly to realize radial and axial positioning.

Preferably, the moving mechanism is an inner bearing seat, and the matching surface is arranged on the inner side of the inner bearing seat.

Preferably, the positioning surface is a slope or a spherical surface.

Preferably, when the positioning surface is an inclined surface, the inclined angle of the inclined surface is 40-50 degrees.

Preferably, the positioning mechanism is fixedly arranged on the oil seal of the rotor assembly, the positioning surface is arranged on the outer side surface of the oil seal, and the outer side surface is arranged in the direction of the oil seal deviating from the rotor in the rotor assembly.

Preferably, the bearing positioning device further comprises a separating mechanism for separating the bearing, and the separating mechanism is movably arranged relative to the positioning mechanism.

Preferably, the separating mechanism is a bearing sleeve, and the bearing sleeve is provided with a clamping part used for clamping with an outer ring of the bearing.

A method for disassembling a traction motor bearing is applied to a device for disassembling the traction motor bearing, and comprises the following steps:

positioning the rotor assembly axially and radially;

and (5) disassembling the bearing.

Preferably, the dismounting bearing comprises:

pulling out bearings at two ends of the rotor assembly;

and installing new bearings at two ends of the rotor assembly.

Preferably, after installing new bearings at both ends of the rotor assembly, the method comprises the following steps:

and returning the rotor assembly to the center.

The invention provides a dismounting device of a traction motor bearing, comprising: the positioning mechanism is used for being fixedly arranged on the rotor assembly, and the moving mechanism is movably arranged relative to the positioning mechanism; the positioning mechanism is provided with a positioning surface, and the moving mechanism is provided with a matching surface which is used for matching with the positioning surface so as to realize radial and axial positioning of the rotor assembly.

In the process of disassembling the traction motor bearing, the matching surface can be matched with the positioning surface by moving the moving mechanism, so that the axial and radial positioning of the rotor assembly is realized; in the process of disassembling the bearings in the motor with the bearings at two ends and only one inner bearing seat, the rotor assembly needs to be moved once, so that the positioning of the rotor assembly can be realized; after the rotor assembly is positioned, the bearing can be disassembled, and at the moment, in the process of disassembling the bearing, the rotor assembly is positioned, so that the position of the rotor assembly cannot be influenced.

Compared with the prior art, the dismounting device for the traction motor bearing provided by the invention avoids the dismounting process of the rotor assembly, simplifies the dismounting process of the traction motor bearing, shortens the dismounting time of the traction motor bearing and improves the working efficiency.

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 diagram of a traction motor of the prior art;

FIG. 2 is a schematic structural diagram of a mounting position of a dismounting device for a traction motor bearing in a traction motor according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of the traction motor bearing of FIG. 2 in a ready-to-disassemble state;

FIG. 4 is a schematic structural view of the traction motor bearing of FIG. 2 in a disassembled state;

FIG. 5 is a schematic structural diagram of a second embodiment of a dismounting device for a traction motor bearing provided by the present invention at a mounting position in a traction motor;

FIG. 6 is a schematic structural diagram of a third embodiment of a dismounting device for a traction motor bearing provided by the present invention at a mounting position in a traction motor;

FIG. 7 is a schematic structural diagram of a fourth embodiment of a dismounting device for a traction motor bearing provided by the present invention at a mounting position in a traction motor;

FIG. 8 is a schematic cross-sectional view of an oil seal;

FIG. 9 is a schematic cross-sectional view of a bearing sleeve of the ball bearing end;

FIG. 10 is a schematic cross-sectional view of a bearing sleeve of the bearing end of the column;

FIG. 11 is a schematic structural view of the positioning surface and the mating surface;

fig. 12 is a schematic flow chart of a method for disassembling a traction motor bearing provided by the present invention.

In FIGS. 1-12:

the bearing comprises a rotor 01, a rotor pressing ring 1, a motor end cover 2, an oil seal 3, a bearing sleeve 4, a central shaft 5, a positioning surface 6, a matching surface 7 and an inner bearing seat 8.

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 of a traction motor bearing, which can simplify the dismounting process of the traction motor bearing. The other core of the invention is to provide a method applied to the dismounting device of the traction motor bearing.

Referring to fig. 1-12, fig. 1 is a schematic structural diagram of a traction motor in the prior art; FIG. 2 is a schematic structural diagram of a mounting position of a dismounting device for a traction motor bearing in a traction motor according to an embodiment of the present invention; FIG. 3 is a schematic structural view of the traction motor bearing of FIG. 2 in a ready-to-disassemble state; FIG. 4 is a schematic structural view of the traction motor bearing of FIG. 2 in a disassembled state; FIG. 5 is a schematic structural diagram of a second embodiment of a dismounting device for a traction motor bearing provided by the present invention at a mounting position in a traction motor; FIG. 6 is a schematic structural diagram of a third embodiment of a dismounting device for a traction motor bearing provided by the present invention at a mounting position in a traction motor; FIG. 7 is a schematic structural diagram of a fourth embodiment of a dismounting device for a traction motor bearing provided by the present invention at a mounting position in a traction motor; FIG. 8 is a schematic cross-sectional view of an oil seal; FIG. 9 is a schematic cross-sectional view of a bearing sleeve of the ball bearing end; FIG. 10 is a schematic cross-sectional view of a bearing sleeve of the bearing end of the column; FIG. 11 is a schematic structural view of the positioning surface and the mating surface; fig. 12 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: the positioning mechanism is used for being fixedly arranged on the rotor assembly, and the moving mechanism is movably arranged relative to the positioning mechanism; the positioning mechanism is provided with a positioning surface 6, and the moving mechanism is provided with a matching surface 7 which is used for matching with the positioning surface 6 so as to realize radial and axial positioning of the rotor assembly.

In the process of disassembling the traction motor bearing, the matching surface 7 can be matched with the positioning surface 6 by moving the moving mechanism, so that the axial and radial positioning of the rotor assembly is realized; after the rotor assembly is positioned, the bearing can be disassembled, and at the moment, in the process of disassembling the bearing, the rotor assembly is positioned, so that the position of the rotor assembly cannot be influenced.

Compared with the prior art, the dismounting device for the traction motor bearing provided by the invention avoids the dismounting process of the rotor assembly, simplifies the dismounting process of the traction motor bearing, shortens the dismounting time of the traction motor bearing and improves the working efficiency.

It should be noted that the dismounting device for a traction motor bearing provided in this document can be applied to dismounting a dual-bearing motor, and can also be applied to dismounting a single-bearing motor, as shown in fig. 7.

On the basis of the above embodiments, in order to facilitate the process of positioning the rotor assembly, the positioning surface 6 may be provided as an inclined surface or a spherical surface.

The matching surface 7 is an inclined surface matched with the positioning surface 6, and in the process of attaching and contacting the two surfaces, the friction force has horizontal and vertical component force, so that the rotor assembly can be kept in positioning in the radial direction and the axial direction.

The angle of inclination of the mating face 7 may be set to 40-50 deg. in view of reliability of radial and axial positioning.

Preferably, the contact angle of the mating surface 7 is 45 °.

When the positioning surface 6 is a spherical surface, the matching surface 7 is a spherical surface matched with the positioning surface 6, the specific size of the spherical surface needs to be determined according to the size of the oil seal 3, and in the process of jointing and contacting the two spherical surfaces, the friction force has horizontal and vertical component forces, so that the rotor assembly can be kept in positioning in the radial direction and the axial direction.

On the basis of the above embodiment, in order to avoid additional arrangement of parts, the positioning mechanism may be an oil seal 3 fixedly arranged on the rotor assembly, as shown in fig. 2 and fig. 6, the positioning surface 6 is arranged on the outer side surface of the oil seal 3, and it should be explained that the outer side surface of the oil seal 3 is the side of the oil seal 3 away from the rotor in the rotor assembly.

As shown in fig. 5, the positioning mechanism may also be a rotor pressing ring 1 disposed on the right side of the rotor in the length direction, and a positioning surface 6 is disposed on one side of the rotor pressing ring 1 away from the rotor 01; as shown in fig. 7, in the single-bearing motor, the positioning mechanism may also be a rotor pressing ring 1 disposed on the left side of the rotor assembly, and a positioning surface 6 is disposed on a side surface of the rotor pressing ring 1 away from the rotor 01.

In addition to the above-described embodiment, the moving mechanism may be an inner bearing housing 8, and the mating surface 7 may be provided on a side of the inner bearing housing 8 facing the oil seal 3.

Preferably, the inner bearing seat 8 is detachably connected with the motor end cover.

In the process of disassembling the bearing of the traction motor, for a double-bearing motor, an inner bearing seat 8 can be arranged only at one end, as shown in fig. 2, 3 and 4, the inner bearing seat 8 is arranged only at the fixed end of the rotor, and the inner bearing seat 8 is detachably connected with a motor end cover at the fixed end through a bolt; in the process of disassembly, firstly, the connection between the inner bearing seat 8 and the motor end cover is disassembled, the inner bearing seat 8 is moved to the non-positioning end until the positioning surfaces 6 of the oil seals 3 at the two ends of the rotor are contacted with the matching surface 7, then the bearing sleeves 4 at the two ends are pulled out to take out the bearing, the bearing at the positioning end can also be pulled out through a groove reserved in the bearing chamber, the inner ring of the bearing at the non-positioning end is inductively heated, the bearing at the non-positioning end is pulled out, or other feasible disassembly modes are adopted, and the disassembly mode is determined according to the actual situation; cleaning bearing chambers at two ends, adding new grease, and preparing to press in a new bearing; in the process of pressing the bearing in, firstly, the bearing is pressed into the corresponding bearing sleeve 4, then the inner ring and the outer ring of the new bearing at the non-positioning end are pressed to a theoretical position and the mounting bolt is fastened, the inner ring of the new bearing at the positioning end is pressed to the mounting position, the central shaft 5 is pulled to enable the rotor assembly to move towards the positioning end until the inner bearing seat 8 reaches the theoretical mounting position, the mounting bolt of the inner bearing seat 8 is fastened, the mounting bolt of the bearing sleeve 4 is fastened, the rotor is centered at the moment, and the replacement is finished.

When traction motor is single bearing motor, when as shown in fig. 7, be provided with rotor clamping ring 1, be provided with locating surface 6 on the rotor clamping ring 1, motor end cover detachable is connected with inner bearing frame 8, inner bearing frame 8 be provided with locating surface 6 complex fitting surface 7, of course, locating surface 6 can also set up in oil blanket 3 or 5 shaft shoulders of central shaft etc. arbitrary and rotor subassembly fixed connection's position, do not do the perusal here. In the process of disassembling the bearing, the steps are as follows: the outer ring of the bearing and the fastening bolt are removed, the inner bearing seat 8 is moved inwards to clamp the radial direction of the rotor, the positioning of the rotor assembly is realized, and the rotor assembly does not need to be moved; pulling out the bearing sleeve 4 to bring out the bearing outer ring, 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; pressing the outer ring of the new bearing of the bearing sleeve 4 to a theoretical position and fastening a mounting bolt; pressing the inner ring of the bearing to a theoretical position; fastening the bearing sleeve 4 to install bolts in place; and fastening the mounting bolt of the inner bearing seat 8, and finishing the replacement of the bearing.

It should be noted that, because the dismounting process of the bearing in the single-bearing motor is simpler, online replacement can be realized, and when the wheel set on the bogie adopts the arrangement structure of the built-in axle box, the motor can be replaced online without falling off the bogie; on the occasion of the track-pitch-variable bogie, the online replacement technology of the motor bearing can be considered according to the actual structure.

When traction motor's both ends all are provided with the bearing, and when both ends all are provided with inner bearing frame 8, as figure 5, as shown in figure 6, at the in-process of dismantling traction motor bearing, because both ends all are provided with inner bearing frame 8, consequently need not remove the rotor subassembly, when dismantling, at first the bolt that fastens both ends inner bearing frame 8 is demolishd, then it shortens to remove both ends inner bearing frame 8 messenger distance between the two, locating surface 6 and fitting surface 7 up to both ends all are in the cooperation position, then dismantle both ends bearing, the clearance, the installation, after having installed, remove two inner bearing frames 8 to the installation position, and fasten.

On the basis of the above embodiment, in order to make the dismounting process of the traction motor bearing more convenient, a separating mechanism for separating the bearing may be further included, and the separating mechanism is movably arranged relative to the positioning mechanism.

Preferably, the separating mechanism is a bearing sleeve 4, and the bearing sleeve 4 is provided with a clamping part for clamping with an outer ring of the bearing.

Preferably, the structure of the bearing housing 4 is as shown in fig. 8 in the case of a ball bearing, and the structure of the bearing housing 4 is as shown in fig. 9 in the case of a cylindrical bearing.

In addition to the dismounting device of the traction motor bearing, the invention also provides a dismounting method of the traction motor bearing, which is applied to the dismounting device of the traction motor bearing disclosed by the embodiment, and the dismounting method of the traction motor bearing comprises the following steps:

step S1, positioning the rotor assembly in the axial and radial directions.

And step S2, disassembling the bearing.

In the dismounting method of the traction motor bearing provided by the embodiment, the rotor assembly is not required to be dismounted in the process of dismounting the bearing, the rotor 01 is not required to be separated from the stator, and only the inner bearing seat 8 is required to be moved, so that the dismounting process of the bearing is simplified, and the dismounting time of the bearing is shortened.

The step S2 includes:

and step S21, extracting the bearings at the two ends of the rotor assembly.

Step S22, new bearings are installed at both ends of the rotor assembly.

Compared with other schemes, the method in the embodiment can realize the simultaneous disassembly and assembly of the bearings at two ends in a single positioning state, does not need repeated positioning operation, further simplifies the disassembly process of the bearings, and shortens the disassembly time.

On the basis of the above embodiment, after step S22, the method includes:

and step S3, the rotor assembly is returned to be centered.

It should be noted that the dismounting device and method for the traction motor bearing provided in the present application realize simplification of the dismounting process of the traction motor bearing on the basis of reusing the simplest structural part, avoid the arrangement of additional parts, reduce the cost, and simultaneously do not need special tools in the dismounting process, so that the dismounting difficulty of the bearing is reduced; and in the process of disassembly, the axial and radial positioning of the rotor assembly can be kept, and the installation precision is ensured.

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 dismounting device for the traction motor bearing and the method applied to the dismounting device 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.