CN112388564A - High-speed motor bearing drawing device - Google Patents
High-speed motor bearing drawing device Download PDFInfo
- Publication number
- CN112388564A CN112388564A CN202011471698.7A CN202011471698A CN112388564A CN 112388564 A CN112388564 A CN 112388564A CN 202011471698 A CN202011471698 A CN 202011471698A CN 112388564 A CN112388564 A CN 112388564A
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- claw
- bearing
- hydraulic
- draw
- speed motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/06—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a high-speed motor bearing drawing device which comprises a fixed part, a movable part and a drawing claw assembly, wherein the fixed part is fixedly connected with the movable part; the fixing part is used for abutting against the motor rotating shaft; the moving part is movably connected with the fixed part and can move relative to the fixed part along the axial direction of the rotating shaft of the motor; draw the claw subassembly including drawing the dish and draw the claw, draw the dish and can follow motor shaft axial displacement under the drive of removal portion, draw claw rotatable coupling on drawing the dish, and draw the claw along the axial extension who draws the dish, draw the claw and be a plurality of, a plurality of draw the claw to encircle the axial evenly distributed who draws the dish. According to the high-speed motor bearing drawing device, the drawing claw extends into the gap between the bearing and the bearing seat, the drawing claw is rotated to enable the drawing claw to buckle the bearing, the moving part moves relative to the fixed part to drive the drawing disc to move synchronously, and further drive the drawing claw to move, so that the bearing moves axially along the motor rotating shaft, the bearing is removed, the bearing in a narrow space can be smoothly removed, the operation is convenient and rapid, and the removal efficiency is high.
Description
Technical Field
The invention relates to the technical field of motor devices, in particular to a high-speed motor bearing drawing device.
Background
The bearing is an important supporting part of the rotating machine, and the rotating machine cannot rotate without the bearing. In the stages of design verification, after-sale maintenance and the like of a product prototype, the bearing is inevitably required to be assembled and disassembled. The bearing is disassembled from the shaft, and a special puller tool for the bearing is needed.
For a high-speed motor, the space near the bearing installation position is narrow, and the structure size of the existing bearing puller is large, so that the bearing can not be detached from a shaft in a narrow space, and the bearing of the high-speed motor is difficult to detach.
Disclosure of Invention
The embodiment of the invention provides a high-speed motor bearing drawing device, which aims to solve the problem that a high-speed motor bearing is difficult to disassemble.
The embodiment of the invention provides a high-speed motor bearing drawing device which comprises a fixing part, a moving part and a drawing claw assembly, wherein the fixing part is arranged on the fixing part; the fixing part is used for abutting against the motor rotating shaft; the moving part is movably connected with the fixed part and can move relative to the fixed part along the axial direction of the rotating shaft of the motor; draw the claw subassembly to include the drawing dish and draw the claw, the drawing dish can follow motor shaft axial displacement under the drive of removal portion, draw claw rotatable coupling be in on the drawing dish, just draw the claw to follow the axial extension of drawing dish, draw the claw to be a plurality of, a plurality of draw the claw to encircle the axial evenly distributed of drawing the dish.
According to an aspect of the embodiment of the present invention, the pulling claw includes a claw body and a claw head, a first end of the claw body is rotatably connected to the pulling disc, the claw head is fixedly connected to a second end of the claw body, and an included angle is formed between the claw head and the claw body.
According to an aspect of the embodiment of the present invention, the claw head is formed in a circular arc shape as viewed in an axial direction of the drawing plate.
According to an aspect of the embodiment of the present invention, the drawing plate is fixedly connected to the moving portion through a lock nut, and a positioning nut is disposed at an end of the drawing claw connected to the drawing plate.
According to an aspect of the embodiment of the present invention, one end of the fixing portion, which is used for abutting against the rotating shaft of the motor, is provided with a conical tip.
According to an aspect of the embodiment of the present invention, the fixed portion includes a hydraulic ram, the moving portion includes a hydraulic cylinder, a first end of the hydraulic ram is configured to abut against the motor rotating shaft, a second end of the hydraulic ram extends into the hydraulic cylinder from the first end of the hydraulic cylinder, and the hydraulic ram and the hydraulic cylinder are capable of moving relative to each other along an axial direction of the hydraulic ram.
According to one aspect of the embodiment of the invention, the second end of the hydraulic cylinder body is connected with a quick-connection plug, the quick-connection plug is used for being connected with a hydraulic pump, and hydraulic oil enters a space between the second end of the hydraulic cylinder body and the second end of the hydraulic ejector rod through the quick-connection plug under the action of the hydraulic pump so as to push the hydraulic ejector rod and the hydraulic cylinder body to move relatively.
According to an aspect of the embodiment of the present invention, a return spring is disposed in the hydraulic cylinder body, the return spring is sleeved on the hydraulic push rod, one end of the return spring is configured to abut against the second end of the hydraulic push rod, and the other end of the return spring is configured to abut against the first end of the hydraulic cylinder body.
According to an aspect of the embodiment of the present invention, the fixing portion includes a threaded rod, a first end of the threaded rod is used for abutting against a rotating shaft of the motor, the drawing plate is connected to the threaded rod through a threaded structure, and the threaded rod and the drawing plate can move relatively along an axial direction of the threaded rod.
According to the high-speed motor bearing drawing device provided by the embodiment of the invention, the drawing claw extends into the gap between the bearing and the bearing seat, the drawing claw is rotated to enable the drawing claw to buckle the bearing, the fixed part is abutted against the motor rotating shaft, the moving part moves relative to the fixed part to drive the drawing disc to move synchronously, so that the drawing claw is driven to move, the bearing is driven to move axially along the motor rotating shaft, the bearing is disassembled, the drawing claw can rotate, the drawing claw can extend into the bearing when the gap between the bearing and the bearing seat is narrow, the bearing can be buckled by rotating after extending, the bearing in a narrow space can be disassembled smoothly, the operation is convenient and rapid, the disassembling efficiency is high, and the problem that the bearing of a high-speed motor is difficult to disassemble.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the environment in which a bearing of a high-speed motor of the prior art is located;
FIG. 2 is a schematic structural diagram of a high-speed motor bearing drawing device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a high-speed motor bearing drawing device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a high-speed motor bearing drawing device according to another embodiment of the invention.
In the drawings:
100-motor rotating shaft, 200-bearing, 300-bearing seat, 400-gap, 500-drawing disc, 600-drawing claw, 700-conical tip, 800-hydraulic ejector rod, 900-hydraulic cylinder body and 110-threaded rod;
501-locking a nut;
601-claw head, 602-positioning nut;
801-first O-shaped sealing ring, 802-O-shaped sealing ring retainer ring and 803-return spring;
901-quick connection plug, 902-hydraulic cylinder guide sleeve, 903-second O-shaped sealing ring.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the described embodiments.
In the description of the present invention, it is to be noted that, unless otherwise specified, the terms "first" and "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; "plurality" means two or more; the terms "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The high-speed motor can be applied to various industries, such as compressors, micro gas turbines and the like, and the rotating speed of the high-speed motor is very high and can reach above 36000rpm, so that the characteristics of rotor dynamics need to be adjusted by relying on a squirrel-cage elastic support damper, and the adjacent-order rotating speed of the high-speed motor meets the corresponding standard specification. Particularly, when oil injection lubrication is adopted, the labyrinth seal structures have to be designed at the two ends of the bearing 200, which results in that the bearing housing 300 cannot be removed first and then the bearing 200 cannot be removed, and the gap 400 between the bearing 200 and the bearing housing 300 is still narrow after the squirrel cage elastic support damper is removed, as shown in fig. 1, the bearing 200 is difficult to remove.
Referring to fig. 2, the high-speed motor bearing 200 drawing apparatus according to the embodiment of the present invention includes a fixing portion, a moving portion and a drawing claw assembly; the fixing part is used for abutting against the motor rotating shaft 100; the moving part is movably connected with the fixed part and can move relative to the fixed part along the axial direction of the motor rotating shaft 100; draw the claw subassembly to include drawing dish 500 and draw claw 600, draw dish 500 can be under the drive of removal portion along motor shaft 100 axial displacement, draw claw 600 rotatable coupling on drawing dish 500, and draw claw 600 along the axial extension who draws dish 500, draw claw 600 to be a plurality of, a plurality of draw claw 600 to encircle the axial evenly distributed who draws dish 500. In this embodiment, the pulling claw 600 extends into the gap 400 between the bearing 200 and the bearing seat 300, the pulling claw 600 is rotated to enable the pulling claw 600 to buckle the bearing 200, the fixed portion abuts against the motor rotating shaft 100, the moving portion moves relative to the fixed portion to drive the pulling disc 500 to move synchronously, and further the pulling claw 600 is driven to move, so that the bearing 200 moves axially along the motor rotating shaft 100, the bearing 200 can be disassembled, because the pulling claw 600 is rotatable, the pulling claw can also extend into the gap 400 between the bearing 200 and the bearing seat 300 when the gap 400 is narrow, the bearing 200 can be buckled by rotating after extending, the bearing 200 in a narrow space can be disassembled smoothly, the operation is convenient and fast, and the disassembling efficiency is high.
For the dismounting of the bearing 200 of the high-speed motor, after the squirrel-cage elastic support damper is dismounted, the pull claw 600 in the high-speed motor bearing 200 drawing device of the embodiment is extended into the gap 400 between the bearing 200 and the bearing seat 300 to dismount the bearing 200, so that the dismounting requirement of the bearing 200 of the high-speed motor is met.
The number of the pulling claws 600 of the embodiment can be multiple, such as two or three, and the multiple axial uniform distribution surrounding the pulling disk 500 enables the bearing 200 to be stressed uniformly during disassembly, so that the disassembly is more convenient. Fig. 2 shows a cross-sectional view with three pull tabs 600.
As an alternative embodiment, the pulling claw 600 includes a body and a head 601, a first end of the body is rotatably connected to the pulling plate 500, the head 601 is fixedly connected to a second end of the body, and an angle is formed between the head 601 and the body.
In this embodiment, the claw head 601 and the claw body form an included angle, so that the bearing 200 can be fastened, and the bearing 200 can be detached. The included angle may be an acute angle or a right angle, preferably a right angle.
As an alternative embodiment, the claw head 601 has a circular arc shape as viewed in the axial direction of the drawing plate 500.
The circular arc-shaped claw head 601 of the embodiment can smoothly extend into the annular gap 400 between the bearing 200 and the bearing pedestal 300, so that the width of the claw head 601 can be reduced to extend into the narrow annular gap 400, the length of the claw head can be increased to reach the effect that the claw head 601 is simultaneously abutted against the inner ring and the outer ring of the bearing 200, the bearing 200 in a narrow space can be dismantled, and the bearing 200 cannot be easily damaged in the dismantling process.
As an alternative embodiment, the drawing plate 500 is fixedly connected to the moving part by a locking nut 501, and a positioning nut 602 is provided at one end of the drawing claw 600 connected to the drawing plate 500.
In this embodiment, the drawing plate 500 is sleeved on the moving part and is limited by the lock nut 501. The drawing disc 500 is provided with limiting through holes which are uniformly distributed along the circumferential direction, and the drawing claw 600 penetrates through the limiting through holes and is positioned through the positioning nut 602. The number of the limiting through holes is the same as that of the pull claws 600.
As an alternative embodiment, one end of the fixing portion for abutting against the motor shaft 100 has a conical tip 700.
The arrangement of the conical center 700 of the present embodiment facilitates the positioning of the whole device by means of the central hole on the motor shaft 100.
Referring to fig. 3, for the sake of simplicity, only the outer ring of the bearing 200 is shown in the drawing, and only the inner hole edge of the bearing seat 300 is shown in the drawing, after the pulling claw 600 passes through the gap 400 between the bearing 200 and the bearing seat 300, the pulling claw 600 is rotated, and then the pulling disk 500 and the positioning nut 602 are appropriately adjusted, so that the conical center 700 is pushed against the central hole of the motor rotating shaft 100. The moving part is moved backward with respect to the fixed part as appropriate so that the locking nut 501 locks the drawing disc 500, and then the moving part is moved slowly with respect to the fixed part so that the bearing 200 is removed from the motor shaft 100.
As an alternative embodiment, the fixed portion includes a hydraulic ram 800, the moving portion includes a hydraulic ram cylinder 900, a first end of the hydraulic ram 800 is configured to abut against the motor shaft 100, a second end of the hydraulic ram 800 extends into the hydraulic ram cylinder 900 from the first end of the hydraulic ram cylinder 900, and the hydraulic ram 800 and the hydraulic ram cylinder 900 can move relatively along an axial direction of the hydraulic ram 800.
In this embodiment, the cylinder body 900 can move relative to the hydraulic ram 800 along the axial direction of the hydraulic ram 800, so that the axial direction of the hydraulic ram 800 and the axial direction of the motor shaft 100 coincide in use.
An integral hydraulic structure can be adopted, the hydraulic push rod 800 and the hydraulic cylinder body 900 are taken as basic components of the integral hydraulic structure, and the hydraulic push rod 800 can stretch relative to the hydraulic cylinder body 900 during operation.
Accept the aforesaid, draw set 500 and cup joint in hydraulic cylinder body 900 outsidely, and draw set 500 accessible helicitic texture and be connected with hydraulic cylinder body 900, lock nut 501 locks draw set 500 for it is more stable to dismantle the position of bearing 200 in-process draw set 500 on hydraulic cylinder body 900.
As an alternative embodiment, the second end of the hydraulic cylinder body 900 is connected with a quick-connect plug 901, the quick-connect plug 901 is used for being connected with a hydraulic pump, and hydraulic oil enters a space between the second end of the hydraulic cylinder body 900 and the second end of the hydraulic ram 800 through the quick-connect plug 901 under the action of the hydraulic pump, so as to push the hydraulic ram 800 and the hydraulic cylinder body 900 to move relatively.
In this embodiment, a split hydraulic structure may be adopted, and an external hydraulic pump provides power for the relative movement of the hydraulic ram 800 and the hydraulic cylinder body 900. When the hydraulic pump pressurizes, hydraulic ram 800 stretches out from cylinder body 900, because hydraulic ram 800 and motor shaft 100 butt for cylinder body 900 is kept away from motor shaft 100 and is removed, drives and draws claw subassembly synchronous motion, realizes dismantling bearing 200 on the motor shaft 100.
The hydraulic pump is connected with the quick connector through an oil pipe, and the hydraulic cylinder body 900 and the hydraulic ejector rod 800 are sealed with hydraulic oil through a first O-shaped sealing ring 801 and an O-shaped sealing ring retainer ring 802. The hydraulic pump can adopt a manual hydraulic pump or an electric hydraulic pump.
In addition, the second end of the hydraulic ram 800 may be sleeved with a first O-ring 801, and an O-ring retainer 802 is provided to seal a space between the second end of the hydraulic ram 800 and the second end of the hydraulic cylinder 900. The first end of the hydraulic cylinder body 900 can be provided with a hydraulic cylinder guide sleeve 902, the hydraulic cylinder guide sleeve 902 guides the hydraulic push rod 800, and the inner ring of the hydraulic cylinder guide sleeve 902 can be provided with a second O-shaped sealing ring 903, so that the inner surface of the hydraulic cylinder body 900 can be prevented from being scratched when the hydraulic push rod 800 moves relatively due to the fact that external impurities enter the hydraulic cylinder body 900.
As an optional embodiment, a return spring 803 is disposed in the hydraulic cylinder body 900, the return spring 803 is sleeved on the hydraulic ram 800, one end of the return spring 803 is used for abutting against the second end of the hydraulic ram 800, and the other end of the return spring 803 is used for abutting against the first end of the hydraulic cylinder body 900. When the pressure is released, the hydraulic ram 800 automatically retracts into the hydraulic cylinder body 900 under the action of the return spring 803.
Receiving the above, one end of the return spring 803 abuts against the second end of the hydraulic ram 800, and the other end of the return spring 803 abuts against the cylinder guide 902.
Referring to fig. 4, as an alternative embodiment, the fixing portion includes a threaded rod 110, a first end of the threaded rod 110 is configured to abut against the motor shaft 100, the drawing plate 500 is connected to the threaded rod 110 through a threaded structure, and the threaded rod 110 and the drawing plate 500 are capable of moving relative to each other along an axial direction of the threaded rod 110.
In this embodiment, a screw structure may be adopted, the drawing disc 500 is capable of moving relative to the threaded rod 110 along the axial direction of the threaded rod 110, and in use, the threaded rod 110 is rotated, so that the drawing disc 500 moves towards the second end of the threaded rod 110 along the axial direction of the threaded rod 110, and drives the drawing claw 600 to move, so as to detach the bearing 200 from the motor rotating shaft 100.
Two clamping planes parallel to the axial direction of the threaded rod 110 may be disposed on the threaded rod 110 in a section near the first end of the threaded rod 110, and the two clamping planes may be axially symmetric with respect to the threaded rod 110, so that a wrench can clamp the threaded rod 110 conveniently, and further, the threaded rod 110 can be rotated conveniently, and the bearing 200 can be disassembled.
It should be understood by those skilled in the art that the foregoing is only illustrative of the present invention, and the scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (9)
1. A high-speed motor bearing drawing device is characterized by comprising:
the fixing part is used for abutting against the motor rotating shaft;
the moving part is movably connected with the fixed part and can move relative to the fixed part along the axial direction of the rotating shaft of the motor; and
draw the claw subassembly, including drawing the dish and drawing the claw, drawing the dish can move along motor shaft axial under the drive of removal portion, draw claw rotatable coupling be in on the drawing dish, just draw the claw to follow the axial extension of drawing the dish, it is a plurality of, a plurality of to draw the claw to encircle the axial evenly distributed of drawing the dish.
2. The high-speed motor bearing drawing device of claim 1, wherein the drawing claw comprises a claw body and a claw head, a first end of the claw body is rotatably connected with the drawing disc, the claw head is fixedly connected with a second end of the claw body, and an included angle is formed between the claw head and the claw body.
3. The high-speed motor bearing pulling apparatus of claim 2, wherein the claw head is arc-shaped as viewed in an axial direction of the pulling disk.
4. The high-speed motor bearing drawing device of claim 1, wherein the drawing disc is fixedly connected to the moving part through a locking nut, and a positioning nut is arranged at one end of the drawing claw connected with the drawing disc.
5. The high-speed motor bearing pulling device according to claim 1, wherein one end of the fixing part, which is used for being abutted against a rotating shaft of the motor, is provided with a conical tip.
6. The high-speed motor bearing drawing device according to claim 1, wherein the fixed part comprises a hydraulic ram, the moving part comprises a hydraulic cylinder body, a first end of the hydraulic ram is used for abutting against a rotating shaft of the motor, a second end of the hydraulic ram extends into the hydraulic cylinder body from the first end of the hydraulic cylinder body, and the hydraulic ram and the hydraulic cylinder body can move relatively along an axial direction of the hydraulic ram.
7. The high-speed motor bearing drawing device of claim 6, wherein a second end of the hydraulic cylinder body is connected with a quick-connection plug, the quick-connection plug is used for being connected with a hydraulic pump, and hydraulic oil enters a space between the second end of the hydraulic cylinder body and the second end of the hydraulic ejector rod through the quick-connection plug under the action of the hydraulic pump so as to push the hydraulic ejector rod and the hydraulic cylinder body to move relatively.
8. The high-speed motor bearing pulling device as claimed in claim 6, wherein a return spring is arranged in the hydraulic cylinder body, the return spring is sleeved on the hydraulic ejector rod, one end of the return spring is used for being abutted against the second end of the hydraulic ejector rod, and the other end of the return spring is used for being abutted against the first end of the hydraulic cylinder body.
9. The high-speed motor bearing drawing device of claim 1, wherein the fixing portion comprises a threaded rod, a first end of the threaded rod is used for being abutted against a rotating shaft of a motor, the drawing disc is connected to the threaded rod through a threaded structure, and the threaded rod and the drawing disc can move relative to each other in the axial direction of the threaded rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471698.7A CN112388564A (en) | 2020-12-14 | 2020-12-14 | High-speed motor bearing drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471698.7A CN112388564A (en) | 2020-12-14 | 2020-12-14 | High-speed motor bearing drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112388564A true CN112388564A (en) | 2021-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011471698.7A Pending CN112388564A (en) | 2020-12-14 | 2020-12-14 | High-speed motor bearing drawing device |
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| CN (1) | CN112388564A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116810722A (en) * | 2023-08-29 | 2023-09-29 | 凌远科技股份有限公司 | Bearing drawing device and drawing method |
-
2020
- 2020-12-14 CN CN202011471698.7A patent/CN112388564A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116810722A (en) * | 2023-08-29 | 2023-09-29 | 凌远科技股份有限公司 | Bearing drawing device and drawing method |
| CN116810722B (en) * | 2023-08-29 | 2023-11-10 | 凌远科技股份有限公司 | Bearing drawing device and drawing method |
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