阅读说明：本技术 一种免解体拆装电机轴承方法 (Disassembly-free motor bearing disassembling and assembling method ) 是由 申政 王继邠 唐子谋 胡贵 汤黎明 曾纯 王一辉 王伟 槐孝纪 黄宏臣 杨敏 于 2019-11-14 设计创作，主要内容包括：本发明公开一种免解体拆装电机轴承方法，包括：在端盖端面上插设安装杆，并依次安装夹紧定位件和抵接定位件；通过抵接定位件压紧转子转轴的外端面以进行定位，并将旧轴承组合件沿轴向拔出；调节夹紧定位件使其夹紧转子转轴以进行定位，同时调节抵接定位件使其脱离对转子转轴的压紧，再将旧轴承组合件沿轴向从转子转轴的外端拔出；将新轴承组合件沿轴向从转子转轴的外端滑入至夹紧定位件与抵接定位件之间，并调节抵接定位件使其重新与转子转轴的外端面压紧，再调节夹紧定位件使其放松转子转轴；将新轴承组合件沿轴向滑动至转子转轴上的安装位置。本发明能够实现电机轴承的免解体拆换，提高拆换效率，避免在拆换过程中造成转子移位。(The invention discloses a disassembly-free motor bearing assembly and disassembly method, which comprises the following steps: inserting an installation rod on the end surface of the end cover, and sequentially installing a clamping positioning piece and an abutting positioning piece; the outer end face of the rotor rotating shaft is pressed by the abutting positioning piece to be positioned, and the old bearing assembly is pulled out in the axial direction; adjusting the clamping positioning piece to clamp the rotor rotating shaft for positioning, adjusting the abutting positioning piece to separate from the pressing of the rotor rotating shaft, and then pulling out the old bearing assembly from the outer end of the rotor rotating shaft along the axial direction; sliding the new bearing assembly into the space between the clamping positioning piece and the abutting positioning piece from the outer end of the rotor rotating shaft along the axial direction, adjusting the abutting positioning piece to enable the abutting positioning piece to be pressed with the outer end face of the rotor rotating shaft again, and adjusting the clamping positioning piece to enable the clamping positioning piece to loosen the rotor rotating shaft; and sliding the new bearing assembly to the installation position on the rotor rotating shaft along the axial direction. The motor bearing disassembly-free replacement method can realize disassembly-free replacement of the motor bearing, improve the replacement efficiency and avoid rotor displacement in the replacement process.)

1. A disassembly-free motor bearing dismounting method is characterized by comprising the following steps:

a plurality of mounting rods are axially inserted into each mounting hole on the end face of the end cover, and a clamping positioning piece and a butting positioning piece are sequentially arranged on each mounting rod;

the outer end face of the rotor rotating shaft is pressed through the abutting positioning piece to be positioned, and an old bearing assembly installed on the rotor rotating shaft is pulled out to a position between the clamping positioning piece and the abutting positioning piece along the axial direction;

adjusting the clamping positioning piece to clamp the surface of the rotor rotating shaft for positioning, adjusting the abutting positioning piece to be separated from abutting on the outer end face of the rotor rotating shaft, and then pulling out the old bearing assembly from the outer end of the rotor rotating shaft along the axial direction;

sliding a new bearing assembly into a position between the clamping positioning piece and the abutting positioning piece from the outer end of the rotor rotating shaft along the axial direction, adjusting the abutting positioning piece to enable the abutting positioning piece to be pressed with the outer end face of the rotor rotating shaft again, and adjusting the clamping positioning piece to enable the clamping positioning piece to loosen the rotor rotating shaft;

and sliding the new bearing assembly to a mounting position on the rotor rotating shaft along the axial direction.

2. The method for dismounting and mounting a motor bearing without disassembly as claimed in claim 1, further comprising, before inserting the mounting rod on the end surface of the end cap:

and a process shaft for extending the operation space is axially connected to the outer end of the rotor rotating shaft.

3. The method for dismounting and mounting a motor bearing without disassembly as claimed in claim 2, wherein the process shaft is connected to the outer end of the rotor rotating shaft, and specifically comprises:

and a threaded hole is formed in the end face of the outer end of the rotor rotating shaft along the axis position, a threaded column is arranged on the end face of the inner end of the process shaft along the axis position, and the process shaft and the rotor rotating shaft are detachably connected through the matching of the threaded hole and the threaded column.

4. The disassembly-free motor bearing assembly method of claim 1, wherein the inserting of the mounting rod on the end surface of the end cover specifically comprises:

the end face of the end cover is provided with 4-8 installation holes along the circumference of a preset radius, the installation rods are inserted into the determined installation holes along the axial direction, and meanwhile the end portions of the installation rods are in threaded connection with the corresponding installation holes.

5. The disassembly-free motor bearing mounting method as claimed in claim 4, wherein the clamping positioning element and the abutting positioning element are sequentially mounted on each mounting rod, and the disassembly-free motor bearing mounting method specifically comprises:

the clamping positioning pieces are simultaneously arranged on the mounting rods in a penetrating manner and slide for a preset distance along the axial direction to positions corresponding to the surface of the rotor rotating shaft;

the abutting positioning pieces are simultaneously arranged on the installation rods in a penetrating mode, and the abutting positioning pieces axially slide to the tail end positions of the installation rods and keep the surfaces of the abutting positioning pieces closely attached to the outer end face of the rotor rotating shaft;

and the abutting positioning piece is fixed at the current position on the tail end of each mounting rod through a fastener.

6. The disassembly-free motor bearing assembly method as claimed in claim 1, wherein when the clamping positioning member is adjusted, the clamping and releasing of the surface of the rotor shaft is realized by adjusting the clamping radius of the clamping positioning member; when the butt positioning piece is adjusted, the sliding distance of the butt positioning piece on each installation rod is adjusted to realize the compression and the separation of the outer end face of the rotor rotating shaft.

7. The method for dismounting and mounting a motor bearing without disassembly as claimed in claim 1, wherein the outer end face of the old bearing assembly or the new bearing assembly is forced in an axial direction by a driving system when the old bearing assembly is pulled out or slid into the new bearing assembly.

8. The method for dismounting and mounting a motor bearing without disassembly as claimed in claim 7, wherein after sliding the new bearing assembly axially to the installation position on the rotor shaft, further comprising:

adjusting the abutting positioning piece and enabling the abutting positioning piece to be separated from pressing the outer end face of the rotor rotating shaft;

sequentially sliding the abutting positioning piece and the clamping positioning piece out of each mounting rod;

and detaching each mounting rod from each mounting hole.

Technical Field

The invention relates to the technical field of motors, in particular to a disassembly-free motor bearing assembly and disassembly method.

Background

With the high-speed development of rail transit, the operation and maintenance requirements and the technical level of rail vehicles are increasing day by day.

Traction motors are commonly used for power drive on electric locomotives of railway main lines, electric locomotives of industrial and mining, electric transmission internal combustion locomotives and various electric vehicles. The traction motor mainly comprises a rotor and a stator, and the operation principle of the traction motor is the same as that of a common motor. In order to ensure the smooth and unimpeded rotation of the rotor, a bearing is arranged on the rotor. The working state and the maintenance requirement of each part on the vehicle are different, and the rotor bearing 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 structural arrangement of a conventional traction motor results in bearing disassembly, and the motor must be disassembled first to separate the stator and the rotor, and then the bearing is pulled out from the bearing chamber to complete the detection or replacement work. In the prior art, the motor is dropped to a vehicle and returned to a factory by a common method, a professional 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 the time span of failure analysis solution very big, is unfavorable for the quick solution of problem and reduces the economic loss that the trouble leads to.

Current motor bearing is when the maintenance is changed, mostly need to disintegrate the motor, extracts motor rotor from the motor, later recycles specific device and pulls out the bearing, and the rethread frock is newly installed the new axle bearing to the pivot to put the rotor into the motor again, install the motor again. The whole replacement process is complex in operation and long in time consumption, and in the process of disassembling and reassembling the motor, the rotor rotating shaft is difficult to accurately reset to the axis position, so that the risk of motor damage caused by manual misoperation exists, and potential quality hazards are buried for safe operation of the motor.

Therefore, how to realize disassembly-free disassembly and replacement of the motor bearing, improve the disassembly and replacement efficiency, and avoid the displacement of the rotor in the disassembly and replacement process is a technical problem faced by technical personnel in the field.

Disclosure of Invention

The invention aims to provide a disassembly-free motor bearing disassembly and assembly method, which can realize disassembly-free disassembly and assembly of a motor bearing, improve the disassembly and assembly efficiency and avoid rotor displacement in the disassembly and assembly process.

In order to solve the technical problem, the invention provides a method for disassembling and assembling a motor bearing without disassembly, which comprises the following steps:

a plurality of mounting rods are axially inserted into the mounting holes on the end surface of the end cover, and clamping positioning pieces and abutting positioning pieces are sequentially mounted on the mounting rods;

the outer end face of the rotor rotating shaft is pressed through the abutting positioning piece to be positioned, and an old bearing assembly installed on the rotor rotating shaft is pulled out to a position between the clamping positioning piece and the abutting positioning piece along the axial direction;

adjusting the clamping positioning piece to clamp the surface of the rotor rotating shaft for positioning, adjusting the abutting positioning piece to be separated from abutting on the outer end face of the rotor rotating shaft, and then pulling out the old bearing assembly from the outer end of the rotor rotating shaft along the axial direction;

sliding a new bearing assembly into a position between the clamping positioning piece and the abutting positioning piece from the outer end of the rotor rotating shaft along the axial direction, adjusting the abutting positioning piece to enable the abutting positioning piece to be pressed with the outer end face of the rotor rotating shaft again, and adjusting the clamping positioning piece to enable the clamping positioning piece to loosen the rotor rotating shaft;

and sliding the new bearing assembly to a mounting position on the rotor rotating shaft along the axial direction.

Preferably, before the installation rod is inserted on the end surface of the end cover, the installation rod further comprises:

and a process shaft for extending the operation space is axially connected to the outer end of the rotor rotating shaft.

Preferably, the process shaft is connected to the outer end of the rotor rotating shaft, and specifically includes:

and a threaded hole is formed in the end face of the outer end of the rotor rotating shaft along the axis position, a threaded column is arranged on the end face of the inner end of the process shaft along the axis position, and the process shaft and the rotor rotating shaft are detachably connected through the matching of the threaded hole and the threaded column.

Preferably, the inserting of the mounting rod on the end surface of the end cover specifically includes:

the end face of the end cover is provided with 4-8 installation holes along the circumference of a preset radius, the installation rods are inserted into the determined installation holes along the axial direction, and meanwhile the end portions of the installation rods are in threaded connection with the corresponding installation holes.

Preferably, install in proper order on each installation pole and press from both sides tight setting element and butt setting element, specifically include:

the clamping positioning pieces are simultaneously arranged on the mounting rods in a penetrating manner and slide for a preset distance along the axial direction to positions corresponding to the surface of the rotor rotating shaft;

the abutting positioning pieces are simultaneously arranged on the installation rods in a penetrating mode, and the abutting positioning pieces axially slide to the tail end positions of the installation rods and keep the surfaces of the abutting positioning pieces closely attached to the outer end face of the rotor rotating shaft;

and the abutting positioning piece is fixed at the current position on the tail end of each mounting rod through a fastener.

Preferably, when the clamping positioning piece is adjusted, the clamping radius of the clamping positioning piece is adjusted to clamp and release the surface of the rotor rotating shaft; and adjusting the abutting positioning piece, wherein the abutting positioning piece is adjusted to be at each sliding distance on the mounting rod so as to realize abutting and separation of the outer end face of the rotor rotating shaft.

Preferably, when the old bearing assembly is pulled out or slid into the new bearing assembly, a force is applied to an outer end face of the old bearing assembly or the new bearing assembly in an axial direction by a drive system.

Preferably, after sliding the new bearing assembly axially to the installation position on the rotor rotating shaft, the method further comprises:

adjusting the abutting positioning piece to separate the abutting positioning piece from abutting on the outer end face of the rotor rotating shaft;

sequentially sliding the abutting positioning piece and the clamping positioning piece out of each mounting rod;

and detaching each mounting rod from each mounting hole.

The disassembly-free motor bearing dismounting method mainly comprises five steps, wherein in the first step, mounting rods are inserted into mounting holes in the end face of the end cover along the axial direction, then clamping positioning pieces and abutting positioning pieces are sequentially mounted on the mounting rods, the abutting positioning pieces are kept on the outer sides, and the clamping positioning pieces are arranged on the inner sides. In the second step, after the clamping positioning piece and the abutting positioning piece are installed, the initial positions of the clamping positioning piece and the abutting positioning piece on the installation rod are adjusted, so that the surface of the abutting positioning piece is smoothly abutted against the outer end face of the rotor rotating shaft to press the outer end face of the rotor rotating shaft, and axial positioning and circumferential positioning are formed on the abutting positioning piece (when the axial pressing force is large enough, circumferential positioning can be simultaneously realized by using the static friction force of the surface); at this time, the clamping fixture is kept in the original state. Then, the old bearing assembly (including the old bearing and the old bearing seat) is disassembled, and the clamping positioning piece keeps enough sliding space for the old bearing assembly in a natural state, so that the old bearing assembly arranged at the inner end of the rotor rotating shaft can be firstly pulled out and slides to a position between the clamping positioning piece and the abutting positioning piece. In the third step, because the abutting positioning piece is tightly pressed on the outer end face of the rotor rotating shaft, the old bearing assembly cannot be directly pulled out, at this time, the clamping positioning piece is firstly adjusted to clamp the rotor rotating shaft, after the circumferential positioning and the supporting are kept, the abutting positioning piece is adjusted again to be separated from the abutting of the outer end face of the rotor rotating shaft, enough sliding space is reserved for the old bearing assembly, and then the old bearing assembly can be pulled out from the outer end of the rotor rotating shaft. In the fourth step, a new bearing assembly (comprising a new bearing and a new bearing seat) slides in from the outer end of the rotor rotating shaft along the axial direction until the clamping positioning piece and the abutting positioning piece are clamped, then the abutting positioning piece is firstly adjusted to form pressing with the outer end face of the rotor rotating shaft again, after the axial direction and the circumferential direction are maintained again, the clamping positioning piece is adjusted again to loosen the rotor rotating shaft, and meanwhile, a space enough for the new bearing assembly to slide is reserved. And finally, in the fifth step, the new bearing assembly can be slid to the mounting position on the rotor rotating shaft all the time along the axial direction, and the motor bearing dismounting operation and the motor bearing replacing operation are completed. In summary, the disassembly and assembly method of the motor bearing without disassembly provided by the invention stably and orderly completes the removal of the old bearing assembly and the installation of the new bearing assembly by clamping or pressing and positioning the rotor rotating shaft through the clamping positioning piece and the abutting positioning piece and utilizing the alternate clamping and pressing between the clamping positioning piece and the rotor rotating shaft, and the rotor rotating shaft is always kept clamped or pressed and positioned in the whole disassembly and assembly process, thereby avoiding the displacement of the rotor in the disassembly and assembly process, ensuring the disassembly and assembly precision.

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 flow chart of an embodiment of the present invention.

Fig. 2 is a schematic view of an installation structure of the clamping positioning element and the abutting positioning element on the rotor shaft.

Fig. 3 is a schematic structural view illustrating the old bearing assembly pulled out to a position between the clamping positioning member and the abutting positioning member.

FIG. 4 is a schematic view of the structure of the old bearing assembly pulled out from the rotor shaft.

Fig. 5 is a schematic structural view of the new bearing assembly installed between the clamping positioning member and the abutting positioning member.

Wherein, in fig. 2-5:

an old bearing assembly-a, a new bearing assembly-b;

the device comprises a rotor rotating shaft-1, a process shaft-2, a butting positioning piece-3, a clamping positioning piece-4, a mounting rod-5 and a fastening piece-6;

mounting hole-101, screw hole-102, screw post-201.

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.

Referring to fig. 1, fig. 1 is a flowchart illustrating an embodiment of the present invention.

In a specific embodiment provided by the invention, the method for disassembling and assembling the motor bearing without disassembly mainly comprises six steps, which are respectively:

s1, inserting a plurality of mounting rods 5 into the mounting holes 101 on the end face of the end cover along the axial direction, and sequentially mounting the clamping positioning piece 4 and the abutting positioning piece 3 on each mounting rod 5;

s2, compressing the outer end face of the rotor rotating shaft 1 through the abutting positioning piece 3 for positioning, and axially pulling out the old bearing assembly a installed on the rotor rotating shaft 1 to a position between the clamping positioning piece 4 and the abutting positioning piece 3;

s3, adjusting the clamping positioning piece 4 to clamp the surface of the rotor rotating shaft 1 for positioning, adjusting the abutting positioning piece 3 to separate from the abutting of the outer end surface of the rotor rotating shaft 1, and then pulling out the old bearing assembly a from the outer end of the rotor rotating shaft 1 along the axial direction;

s4, sliding the new bearing assembly b into the space between the clamping positioning piece 4 and the abutting positioning piece 3 from the outer end of the rotor rotating shaft 1 along the axial direction, adjusting the abutting positioning piece 3 to press the outer end face of the rotor rotating shaft 1 again, and adjusting the clamping positioning piece 4 to loosen the rotor rotating shaft 1;

and S5, sliding the new bearing assembly b to the installation position on the rotor rotating shaft 1 along the axial direction.

Here, in step S1, the mounting rods 5 are inserted into the respective mounting holes 101 on the end surfaces of the opposite end covers in the axial direction, and then the clamping position 4 and the abutting position 3 are mounted on the respective mounting rods 5 while keeping the abutting position 3 on the outside and the clamping position 4 on the inside. Generally, the end surface of the end cover is perpendicular to the horizontal plane and also perpendicular to the axial direction of the rotor rotating shaft 1, and each mounting hole 101 is generally horizontally arranged, is uniformly distributed on the end surface of the end cover along the circumferential direction, and is radially arranged in a plurality of layers. With the arrangement, when the mounting rods 5 are inserted, a circle of mounting holes 101 distributed along the circumference can be determined on the end face of the end cover according to the requirement of the preset radius, at least 4 mounting holes, such as 4-8 mounting holes, can be generally selected at the same time, and then the mounting rods 5 are respectively inserted into the selected mounting holes 101.

Meanwhile, in order to facilitate the mounting and dismounting operation of the mounting bars 5 on the end caps, the ends of the respective mounting bars 5 may be screw-coupled with the respective mounting holes 101. Of course, each mounting bar 5 can also be mounted on the end cap by forming a snap fit with each mounting hole 101.

Furthermore, when the clamping positioning piece 4 and the abutting positioning piece 3 are installed on each installation rod 5, the installation can be realized in a sliding connection mode respectively. Specifically, a plurality of through holes may be formed in the circumferential direction of the clamping positioning member 4, the clamping positioning member 4 may be mounted on the mounting rod 5 by fitting each through hole with the shaft hole of each mounting rod 5, and the sliding position adjustment may be performed in the axial direction of the mounting rod 5, so as to clamp the surface of the rotor shaft 1 at a predetermined position. In a similar way, a plurality of through holes can be formed in the circumferential direction of the abutting positioning piece 3, and sliding installation and position adjustment can be realized through the matching of each through hole and each installation rod 5. Meanwhile, since the abutting positioning piece 3 needs to abut against the outer end face of the rotor rotating shaft 1, the mounting position of the abutting positioning piece 3 can be fixed by simultaneously arranging the fastening piece 6 on each mounting rod 5, such as an adjusting nut. Generally, when the abutting positioning piece 3 is located at the end of the mounting rod 5, the surface of the abutting positioning piece 3 just abuts against the outer end face of the rotor rotating shaft 1.

In step S2, after the clamping and positioning element 4 and the abutting and positioning element 3 are mounted, the initial positions of the clamping and positioning element 4 and the abutting and positioning element 3 on the mounting rod 5 are adjusted, so that the clamping and positioning element 4 is aligned with the surface of the rotor shaft 1, and the surface of the rotor shaft 1 can be stably clamped smoothly, thereby forming axial and circumferential positioning on the rotor shaft 1; meanwhile, the surface of the abutting positioning piece 3 is smoothly abutted against the outer end surface of the rotor rotating shaft 1 to press the rotor rotating shaft, and axial and circumferential positioning is formed on the rotor rotating shaft (when the axial pressing force is large enough, the circumferential positioning can be simultaneously realized by using the static friction force of the surface).

After the mounting positions of the clamping and positioning element 4 and the abutting and positioning element 3 are adjusted, the old bearing assembly a (including the old bearing and the old bearing seat) can be detached. Firstly, the abutting positioning piece 3 is adjusted to enable the surface of the abutting positioning piece to be pressed on the outer end face of the rotor rotating shaft 1, and then the old bearing assembly a arranged at the inner end of the rotor rotating shaft 1 is pulled out and slides to a position between the clamping positioning piece 4 and the abutting positioning piece 3. At this time, the clamping and positioning member 4 keeps the natural state unchanged, and a sufficient sliding space is kept for the old bearing assembly a, so that the old bearing assembly a can smoothly pass through the clamping and positioning member 4.

In step S3, since the abutting positioning element 3 is pressed against the outer end surface of the rotor shaft 1, the old bearing assembly a cannot be directly pulled out, at this time, the clamping positioning element 4 is first adjusted to clamp the surface of the rotor shaft 1, the rotor shaft 1 is circumferentially supported and fixed to prevent shaking during the pulling operation, the abutting positioning element 3 is then adjusted to separate from the abutting against the outer end surface of the rotor shaft 1 and leave a sufficient sliding space for the old bearing assembly a, and then the old bearing assembly a can be pulled out from the outer end of the rotor shaft 1.

In step S4, a new bearing assembly b (including a new bearing and a new bearing seat) is slid in from the outer end of the rotor shaft 1 along the axial direction until the clamping positioning member 4 and the abutting positioning member 3 are located therebetween, then the abutting positioning member 3 is adjusted to abut against the outer end surface of the rotor shaft 1 again, the axial and circumferential positioning is maintained, and then the clamping positioning member 4 is adjusted to release the rotor shaft 1, and a space enough for the new bearing assembly b to slide is also left.

Finally, in step S6, the new bearing assembly b can be slid to the mounting position on the rotor shaft 1 along the axial direction, thereby completing the operations of detaching and replacing the motor bearing.

In summary, in the method for dismounting and mounting a motor bearing without disassembly provided by this embodiment, the clamping or pressing positioning of the rotor shaft 1 is performed by the clamping positioning piece 4 and the abutting positioning piece 3, and the alternate clamping and pressing between the clamping positioning piece 4 and the abutting positioning piece 3 and the rotor shaft 1 are used to stably and orderly complete the removal of the old bearing assembly a and the installation of the new bearing assembly b, and the rotor shaft 1 is always kept clamped or pressed and positioned in the whole dismounting and mounting process, so that the rotor displacement is avoided in the dismounting and mounting process, the dismounting and mounting precision is ensured.

As shown in fig. 2 to 5, fig. 2 is a schematic view of an installation structure of the clamping positioning element 4 and the abutting positioning element 3 on the rotor shaft 1, fig. 3 is a schematic view of a structure of pulling out an old bearing assembly a to a position between the clamping positioning element 4 and the abutting positioning element 3, fig. 4 is a schematic view of a structure of pulling out the old bearing assembly a from the rotor shaft 1, and fig. 5 is a schematic view of a structure of installing a new bearing assembly b to a position between the clamping positioning element 4 and the abutting positioning element 3.

In a preferred embodiment, considering a partial size or dimension of the motor, the axial extension of the rotor shaft 1 is short, and it is difficult to clamp and position the rotor shaft 1, for which purpose, the present embodiment first connects the process shaft 2 to the outer end of the rotor shaft 1 before clamping and positioning the rotor shaft 1.

Specifically, a threaded hole 102 may be formed in an outer end surface of the rotor spindle 1 along an axial position, and a threaded post 201 may be formed in an inner end surface of the process spindle 2 along the axial position, where the threaded post 201 may be in threaded connection with the threaded hole 102. Therefore, the process shaft 2 can be installed on the rotor rotating shaft 1 through the matching connection of the threaded column 201 and the threaded hole 102, and the process shaft 2 can be conveniently disassembled from the rotor rotating shaft 1 through screwing. Preferably, the axial length of the process shaft 2 can be equal to the extension length of the rotor shaft 1, which corresponds to extending the length of the rotor shaft 1 twice outward, so that the clamping fixture 4 has sufficient clamping space. Meanwhile, the diameter of the process shaft 2 may be equal to the diameter of the rotor shaft 1.

Of course, in the case that the extension length of the rotor shaft 1 is large enough, the process shaft 2 does not need to be additionally arranged, and the clamping and positioning member 4 is directly clamped on the surface of the rotor shaft 1, and the abutting and positioning member 3 is directly abutted on the outer end surface of the rotor shaft 1. In the case where the process shaft 2 is connected to the rotor shaft 1, the clamping and positioning member 4 may be clamped to the surface of the process shaft 2, and the abutting and positioning member 3 may abut on the outer end surface of the process shaft 2. The following description of the present embodiment will be made by considering the process shaft 2 as a part of the rotor shaft 1.

Of course, the connection mode of the process shaft 2 and the rotor spindle 1 is not limited to the threaded hole 102 and the threaded post 201, and other modes such as forming a clamping groove on the outer end face of the rotor spindle 1 and forming a clamping block on the inner end face of the process shaft 2 can also achieve detachable connection between the process shaft 2 and the rotor spindle 1 by using the clamping groove and the clamping block to form clamping.

For conveniently adjusting the clamping and positioning member 4 and the abutting positioning member 3, in this embodiment, the clamping radius of the clamping and positioning member 4 is adjustable, that is, the clamping range can be enlarged or reduced by adjusting the clamping radius, so that the clamping radius can be adjusted according to the diameter of the rotor rotating shaft 1, the rotor rotating shaft 1 is clamped or loosened, of course, when the old bearing assembly a or the new bearing assembly b needs to pass through the clamping and positioning member 4, the clamping range of the clamping and positioning member 4 can be enlarged to the maximum value, and the old bearing assembly a or the new bearing assembly b can pass through the clamping and positioning member 4 smoothly.

Simultaneously, the mounted position of butt setting element 3 on installation pole 5 is adjustable, when old bearing assembly a or new bearing assembly b need pass through butt setting element 3, only need dismantle each fastener 6 that sets up on the installation pole 5, again with butt setting element 3 from installation pole 5 on take off can. Of course, the fastening member 6 can be additionally arranged at the circle center position of the abutting positioning member 3, and the fastening member 6 is matched and fixed with the preformed hole arranged on the outer end face of the rotor rotating shaft 1 through the fastening member 6, so that the fastening member 6 at the circle center position can be disassembled and assembled together when the fastening member 6 on the mounting rod 5 is disassembled and assembled, and the stability and the accuracy of the abutting positioning member 3 in the axial direction and the circumferential direction of the rotor rotating shaft 1 can be improved by means of the fastening member 6 at the circle center position.

In the process of dismounting and replacing the motor bearing, in order to ensure that the old bearing assembly a and the new bearing assembly b can stably slide along the axial direction of the rotor rotating shaft 1, in the embodiment, the output end of the driving system is connected to the outer end faces of the old bearing assembly a and the new bearing assembly b, and meanwhile, pressure or thrust is applied along the axial direction of the rotor rotating shaft 1.

In addition, after the new bearing assembly b is slid to the mounting position on the rotor rotating shaft 1 and the bearing is replaced and updated, the abutting positioning piece 3 can be continuously adjusted and separated from the abutting of the outer end face of the rotor rotating shaft 1, then the abutting positioning piece 3 is detached from each mounting rod 5, then the clamping positioning piece 4 is detached from each mounting rod 5, finally each mounting rod 5 is detached from each mounting hole 101, and the position of the motor end cover is restored to the original shape.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.