CN218584338U - Lower protection bearing test tool - Google Patents
Lower protection bearing test tool Download PDFInfo
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- CN218584338U CN218584338U CN202222752780.8U CN202222752780U CN218584338U CN 218584338 U CN218584338 U CN 218584338U CN 202222752780 U CN202222752780 U CN 202222752780U CN 218584338 U CN218584338 U CN 218584338U
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- bearing
- balance weight
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- rotor shaft
- disc
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Abstract
A lower protection bearing test tool is arranged on a rotor shaft of a magnetic suspension bearing and comprises a counterweight component, a lower collision ring and a support component, wherein the counterweight component is fixedly arranged at the lower part of the rotor shaft and rotates along with the rotor shaft, and a counterweight disc detachably arranged is arranged on the counterweight component; the lower collision ring is arranged on a shaft shoulder at the lower end of the rotor shaft; the lower collision ring is sleeved with a lower protection bearing, the two ends of the outer ring of the lower protection bearing are matched with the supporting component, and the supporting component is connected with the shell of the magnetic suspension bearing testing machine. In the test process, through the utility model discloses make the magnetic suspension bearing's of different specifications shafting have fixed unified weight, reduce magnetic suspension bearing working parameter's experimental error.
Description
Technical Field
The utility model belongs to magnetic suspension bearing testing machine field, concretely relates to lower protection bearing test frock.
Background
The magnetic suspension bearing is a bearing which suspends the rotor in the air by utilizing the magnetic force, so that the rotor is not in mechanical contact with the stator, and has the advantages of no friction resistance, high running precision, adjustable rigidity and damping and the like.
Because the magnetic suspension bearing supports the rotating shaft system by adjusting the magnetic force in the test process, the stator of the magnetic suspension bearing is arranged on the shaft system, and the size of the stator is different when the magnetic suspension bearing with different specifications is tested, the gravity of the shaft system has great influence on the accuracy of the test result of the magnetic suspension bearing. The conventional test tool for the magnetic suspension bearing usually only comprises two groups of protection bearings, and shafting of a series of magnetic suspension bearings with different specifications cannot be guaranteed to have the same weight, so that large errors can be generated when different magnetic suspension bearings are tested, and the accuracy of the working parameters of the magnetic suspension bearings measured in the test cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a protect experimental frock of bearing down, in the process of the test, make the magnetic suspension bearing's of different specifications shafting have fixed unified weight, reduce magnetic suspension bearing working parameter's experimental error.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a lower protection bearing test tool is arranged on a rotor shaft of a magnetic suspension bearing and comprises a counterweight component, a lower collision ring and a support component, wherein the counterweight component is fixedly arranged at the lower part of the rotor shaft and rotates along with the rotor shaft, and a counterweight disc detachably arranged is arranged on the counterweight component; the lower collision ring is arranged on a shaft shoulder at the lower end of the rotor shaft; the lower collision ring is sleeved with a lower protection bearing, the two ends of the outer ring of the lower protection bearing are matched with the supporting component, and the supporting component is connected with the shell of the magnetic suspension bearing testing machine.
The balance weight assembly further comprises a balance weight disc adjusting ring, a balance weight disc supporting sleeve and a balance weight disc pressing cap, the balance weight disc supporting sleeve and the balance weight disc adjusting ring are sleeved on the rotor shaft, the upper end face of the balance weight disc adjusting ring is in contact with a radial magnetic bearing on the magnetic suspension testing machine, the lower end face of the balance weight disc adjusting ring is in contact with the upper end face of the balance weight disc supporting sleeve, the balance weight disc pressing cap is detachably connected with the rotor shaft and connected to the lower end face of the balance weight disc taper sleeve, and the balance weight disc is detachably connected to the outer circular face of the balance weight disc taper sleeve.
The lower part of the outer circular surface of the weight disc taper sleeve is provided with an annular step surface, the lower end surface of the weight disc is provided with a ring groove which is in convex-concave fit with the annular step surface, and the weight disc taper sleeve are connected at the convex-concave fit position through a screw.
The weight plate pressing cap is in threaded connection with the rotor shaft and is connected with the weight plate taper sleeve through a screw.
The supporting assembly comprises a test bearing gland, a protective ring, a tool support and a transition disc, the tool support is connected with a shell of the magnetic suspension testing machine through the transition disc, the upper end of an outer ring of the lower protective bearing is in contact with the tool support, the lower end of the outer ring of the lower protective bearing is in contact with the protective ring, the protective ring is supported on the test bearing gland, and the test bearing gland is connected with a tool support.
The fixture support and the test bearing gland form a mounting cavity therebetween, and a sensor mounting seat is arranged in the mounting cavity.
The utility model has the advantages that: the utility model discloses after different specification magnetic suspension bearings are changed in the experiment, can make shafting weight remain unchanged through the counterweight disk among the adjustment counterweight assembly to reduce the factor that arouses the error among the testing process, make the magnetic suspension bearing's that experimental record operating parameter more accurate and very big simplification test process.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic view of the installation of the magnetic suspension testing machine of the present invention;
the labels in the figure are: 1. the device comprises a balance weight disc adjusting ring, 2, a balance weight disc, 3, a balance weight disc taper sleeve, 4, a balance weight disc pressing cap, 5, a lower collision ring, 6, a lower nut, 7, a lower protection bearing, 8, a test bearing pressing cover, 9, a protection ring, 10, a sensor mounting seat, 11, a tool support, 12, a transition disc, 13, a rotor shaft, 14, a radial magnetic bearing, 15, a lower flange, 16, a shell, 100, a balance weight assembly, 200 and a supporting assembly.
Detailed Description
The following detailed description of the present invention is provided with reference to the accompanying drawings and examples, but not to be construed as limiting the present invention in any way.
As shown in fig. 1 and 2, a lower protection bearing test tool comprises a weight plate adjusting ring 1, a weight plate 2, a weight plate taper sleeve 3, a weight plate pressing cap 4, a lower collision ring 5, a lower nut 6, a lower protection bearing 7, a test bearing pressing cover 8, a protection ring 9, a sensor mounting seat 10, a tool support 11 and a transition plate 12.
The balance weight assembly is composed of a balance weight disc adjusting ring 1, a balance weight disc 2, a balance weight disc taper sleeve 3 and a balance weight disc pressing cap 4, is installed on the upper portion and the lower portion of a rotor shaft 13 of the magnetic suspension testing machine, and is located above a lower protection bearing 7 on the rotor shaft 13. The rotor shaft 13 is sleeved with the weight plate adjusting ring 1, the weight plate taper sleeve 3 and the weight plate pressing cap 4 from top to bottom in sequence, the weight plate taper sleeve 3 forms a conical surface fit with a conical section on the rotor shaft 13 through an inner conical hole of the weight plate taper sleeve 3, the weight plate pressing cap 4 is in threaded connection with the rotor shaft 13, the weight plate pressing cap 4 is connected to the lower end face of the weight plate taper sleeve 3 through a screw, the upper end of the weight plate adjusting ring 1 is in contact with the radial magnetic bearing 14 on the rotor shaft 13, the lower end of the weight plate pressing cap is in contact with the upper end of the weight plate taper sleeve 3, and the weight plate 2 is connected to the outer circular face of the weight plate taper sleeve 3 through a detachable screw.
Furthermore, the lower part of the outer circular surface of the weight plate taper sleeve 3 is provided with an annular step surface, the lower end surface of the weight plate 2 is provided with a ring groove which is in convex-concave fit with the annular step surface, and the weight plate 2 and the weight plate taper sleeve 3 are connected through screws at the convex-concave fit position.
The lower collision ring 5 is connected to a shaft shoulder at the lower end of the rotor shaft 13 and is fixed on the shaft shoulder through the lower nut 6 to buffer impact generated when the magnetic suspension bearing stops working and a shaft system suddenly falls.
Experimental bearing gland 8, protective ring 9, frock support 11 and transition dish 12 have constituteed supporting component, and wherein, frock support 11 and transition dish 12 pass through bolted connection, and transition dish 12 passes through bolted connection with lower flange 15 of installing on testing machine casing 16, and lower protective bearing 7 cover is in the lower collision ring 5 outside, the outer lane up end and the frock support 11 contact of lower protective bearing 7, terminal surface and below under the outer lane protective ring 9 contacts, leaves axial clearance between inner circle and the protective ring 9, experimental bearing gland 8 is connected with frock support 11 through the screw when withstanding protective ring 9 down the terminal surface to play the effect of supporting protective ring 9 and lower protective bearing 7.
Further, a mounting cavity is formed between the tool support 11 and the test bearing gland 8, a sensor mounting seat 10 is mounted in the mounting cavity to mount a sensor necessary for a test, and the sensor mounting seat 10 is located on the outer side of the lower protection bearing 7.
When the magnetic suspension bearing is subjected to a service life test, the magnetic suspension bearing normally operates to drive the counterweight plate 2 to rotate together, and meanwhile, the counterweight plate taper sleeve 3 ensures the centering precision of the counterweight plate 2, so that the weight of the counterweight plate 2 cannot influence the operating stability of the magnetic suspension bearing; when the next magnetic suspension bearing with different specifications and sizes is replaced for an experiment, the mass of the front and rear groups of test shafting can be kept unchanged only by replacing the counterweight plates 2 with different weights, so that test errors caused by different masses of the test shafting are eliminated, the accuracy and reliability of measurement results are improved, and the test process is simplified.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the embodiments of the present invention can be modified or replaced with equivalents with reference to the above embodiments, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are all within the scope of the claims of the present application.
Claims (6)
1. The utility model provides a lower experimental frock of protection bearing, installs on magnetic suspension bearing's rotor shaft, its characterized in that: the counterweight device comprises a counterweight component, a lower collision ring and a support component, wherein the counterweight component is fixedly arranged at the lower part of a rotor shaft and rotates along with the rotor shaft, and a counterweight disc detachably arranged is arranged on the counterweight component; the lower collision ring is arranged on a shaft shoulder at the lower end of the rotor shaft; the lower collision ring is sleeved with a lower protection bearing, the two ends of the outer ring of the lower protection bearing are matched with the supporting component, and the supporting component is connected with the shell of the magnetic suspension bearing testing machine.
2. The lower protective bearing test tool according to claim 1, characterized in that: the balance weight assembly further comprises a balance weight disc adjusting ring, a balance weight disc supporting sleeve and a balance weight disc pressing cap, the balance weight disc supporting sleeve and the balance weight disc adjusting ring are sleeved on the rotor shaft, the upper end face of the balance weight disc adjusting ring is in contact with a radial magnetic bearing on the magnetic suspension testing machine, the lower end face of the balance weight disc adjusting ring is in contact with the upper end face of the balance weight disc supporting sleeve, the balance weight disc pressing cap is detachably connected with the rotor shaft and connected to the lower end face of the balance weight disc taper sleeve, and the balance weight disc is detachably connected to the outer circular face of the balance weight disc taper sleeve.
3. The lower protective bearing test tool according to claim 2, characterized in that: the lower part of the outer circular surface of the weight disc taper sleeve is provided with an annular step surface, the lower end surface of the weight disc is provided with a ring groove which is in convex-concave fit with the annular step surface, and the weight disc taper sleeve are connected through a screw at the convex-concave fit position.
4. The lower protective bearing test tool according to claim 2, characterized in that: the weight plate pressing cap is in threaded connection with the rotor shaft and is connected with the weight plate taper sleeve through a screw.
5. The lower protective bearing test tool according to claim 1, characterized in that: the supporting assembly comprises a test bearing gland, a protective ring, a tool support and a transition disc, the tool support is connected with a shell of the magnetic suspension testing machine through the transition disc, the upper end of an outer ring of the lower protective bearing is in contact with the tool support, the lower end of the outer ring of the lower protective bearing is in contact with the protective ring, the protective ring is supported on the test bearing gland, and the test bearing gland is connected with a tool support.
6. The lower protective bearing test tool according to claim 5, characterized in that: the fixture support and the test bearing gland form a mounting cavity therebetween, and a sensor mounting seat is arranged in the mounting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222752780.8U CN218584338U (en) | 2022-10-19 | 2022-10-19 | Lower protection bearing test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222752780.8U CN218584338U (en) | 2022-10-19 | 2022-10-19 | Lower protection bearing test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218584338U true CN218584338U (en) | 2023-03-07 |
Family
ID=85374507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222752780.8U Active CN218584338U (en) | 2022-10-19 | 2022-10-19 | Lower protection bearing test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218584338U (en) |
-
2022
- 2022-10-19 CN CN202222752780.8U patent/CN218584338U/en active Active
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