CN210371710U - Device and test bench that rotor system eccentricity and prestressing force are adjustable - Google Patents
Device and test bench that rotor system eccentricity and prestressing force are adjustable Download PDFInfo
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- CN210371710U CN210371710U CN201921087296.XU CN201921087296U CN210371710U CN 210371710 U CN210371710 U CN 210371710U CN 201921087296 U CN201921087296 U CN 201921087296U CN 210371710 U CN210371710 U CN 210371710U
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- rotor
- eccentricity
- bearing seat
- adjustable
- prestress
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Abstract
The utility model relates to a rotor system eccentricity and prestress adjustable device and a test bed, which comprises a bracket, wherein a first bearing seat is arranged at the central position in the bracket, the periphery of the first bearing seat is respectively connected with the peripheral frame of the bracket through an adjusting rod, the first end of the adjusting rod is connected with the first bearing seat, and the second end of the adjusting rod passes through the frame of the bracket to form an extension part; a pressure sensor is disposed at the first end of each adjustment lever and a force adjustment device is disposed on each extension. The utility model discloses can change the prestressing force of applying on the rotor in the direction of difference, can show the size of prestressing force through force transducer simultaneously, not only can adjust rotor system's eccentricity, make rotor system tend to stably, but also can apply certain prestressing force for the shaft diameter through operating this device and make rotor system produce off-centre according to operator's wish, the operational aspect of subsystem under the convenient contrast research different eccentricities.
Description
Technical Field
The utility model relates to a rotating machinery part adjusting device especially is about a rotor system eccentricity and adjustable device of prestressing force and test bench.
Background
Rotary machines are widely used in many fields such as electric power, aviation, and manufacturing, as one of the most important mechanical devices in the industrial sector. The rotor system is a core component of the rotating machine, and comprises a rotor, a bearing, a support and the like. When the shaft diameter runs in the bearing, eccentric running often occurs due to a series of reasons, such as asymmetry of the rotor structure, machining and assembly errors, defects of raw materials or blanks, unbalance generated during running, and the like. For sliding bearings, large eccentricities easily cause rotor instability, half-speed whirl, cause sliding bearing failure, and even damage to machines.
Disclosure of Invention
To the above problem, the utility model provides an adjustable device of rotor system eccentricity and prestressing force and test bench, its eccentricity that can change rotor system to can apply certain prestressing force for the shaft diameter and make rotor system produce off-centre, provide technical support to the eccentric operation problem of studying rotor system.
In order to achieve the purpose, the utility model adopts the following technical proposal: a rotor system eccentricity and prestress adjustable device comprises a support, a first bearing seat, an adjusting rod, a pressure sensor and a force adjusting device; the first bearing seat is arranged at the central position in the support, the periphery of the first bearing seat is connected with the peripheral frame of the support through the adjusting rod respectively, the first end of the adjusting rod is connected with the first bearing seat, and the second end of the adjusting rod penetrates through the frame of the support to form an extending part; the first end of each adjusting rod is provided with one pressure sensor, and each extending part is provided with one force adjusting device.
Further, the support adopts a square structure or a round structure.
Furthermore, a rolling bearing is arranged in the first bearing seat, and an inner ring of the rolling bearing is in interference connection with a rotor in the rotor system.
Furthermore, the adjusting device adopts a knob structure with coarse adjustment and fine adjustment functions.
A test bed based on the eccentricity and prestress adjustable device comprises a test bed bracket, a rotor base, a rotor, a second bearing seat, a coupler, a motor, an unbalanced mass block, a wheel disc, an eccentricity and prestress adjustable device, a belt pulley and a speed reducer; the rotor base is arranged on the test bed bracket, and the rotor is arranged on the rotor base through a plurality of second bearing seats; one end of the rotor is connected with the output end of the motor through the coupler, and the unbalanced mass block, the wheel disc, the adjustable device of eccentricity and prestress, the belt pulley and the speed reducer are sequentially arranged at the other end of the rotor from one side close to the motor.
Further, an inner ring of a rolling bearing in the eccentricity and prestress adjustable device is in interference connection with the rotor.
The utility model discloses owing to take above technical scheme, it has following advantage: the utility model discloses can change the prestressing force of applying on the rotor in the direction of difference, can show the size of prestressing force through force transducer simultaneously, not only can adjust rotor system's eccentricity, make rotor system tend to stably, but also can apply certain prestressing force for the shaft diameter through operating this device and make rotor system produce off-centre according to operator's wish, conveniently carry out the contrast research of the sub-system behavior under the different eccentricities.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top sectional view of FIG. 1;
fig. 3 is a schematic structural diagram of the test bed of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, the utility model provides an adjustable eccentricity and prestress device of a rotor system, which comprises a bracket 1, a first bearing seat 2, an adjusting rod 3, a pressure sensor 4 and a force adjusting device 5. The support 1 adopts a square structure, and a first bearing seat 2 is arranged at the central position in the support 1; the periphery of the first bearing seat 2 is connected with the peripheral frame of the support 1 through an adjusting rod 3, the first end of the adjusting rod 3 is connected with the first bearing seat 2, and the second end of the adjusting rod 3 penetrates through the frame of the support 1 to form an extending part. A pressure sensor 4 is arranged at the first end of each adjusting rod 3 and a force adjusting device 5 is arranged at each extension for adjusting the prestress in all four directions of the bracket 1. The bracket 1 can also adopt other shape structures, such as a round shape; in the present embodiment, the number of the adjustment rods 3 is 4, and actually, other numbers of adjustment rods 3 may be adopted according to the adjustment target.
In the above embodiment, the rolling bearing 6 is disposed in the first bearing seat 2, and the inner ring is in interference fit with the rotor in the rotor system through the rolling bearing 6.
In the above embodiment, the force adjusting device 5 may adopt a knob structure having coarse adjustment and fine adjustment functions. When the device is used, the prestress in different directions can be adjusted through the knob on the rotating force adjusting device 5, so that the eccentricity of the rotor system is adjusted, the rotor system tends to be stable, and meanwhile, the numerical value of the prestress can be displayed through the pressure sensor 4 between the force adjusting device 5 and the first bearing seat 2, so that the running state can be conveniently monitored; when rotor running test under carrying out different eccentricities, can calculate the prestressing force that needs under the different eccentricities earlier, and then exert prestressing force at four directions through the knob on the revolving force adjusting device 5 to rotor system's eccentricity changes, and the size of prestressing force can show through pressure sensor 4, convenient monitoring.
As shown in fig. 3, the utility model also provides a test bench based on the above-mentioned adjustable device of eccentricity and prestressing force, it includes test bench support 7, rotor base 8, rotor 9, second bearing seat 10, shaft coupling 11, motor 12, unbalanced mass 13, rim plate 14, adjustable device 15 of eccentricity and prestressing force, belt pulley 16 and decelerator 17; the reduction gear 17 may be an existing one in the prior art. The rotor base 8 is arranged on the test bed bracket 7, and the rotor 9 is arranged on the rotor base 8 through a plurality of second bearing seats 10; one end of the rotor 9 is connected with the output end of the motor 12 through a coupling 11, and an unbalanced mass block 13, a wheel disc 14, an eccentricity and prestress adjustable device 15, a belt pulley 16 and a speed reducer 17 are sequentially arranged at the other end of the rotor 9 from one side close to the motor 12; wherein, the inner ring of the rolling bearing 6 in the eccentricity and prestress adjustable device 15 is connected with the rotor 9 in an interference way.
When the device is used, the motor 12 drives the rotor 9 through the coupler 11, and then drives the unbalanced weight 4, the wheel disc 14, the rolling bearing 6 and the belt pulley 16 to rotate; the eccentricity of the rotor 9 during rotation is adjusted by an adjustable device 15.
To sum up, the utility model can change the force applied on the rotor 9 by adjusting the eccentricity and the adjustable device of prestress 15, and further adjust the eccentricity, the adjustable device of eccentricity and prestress 15 can adjust the force in four directions but not limited to four directions, and the force is displayed by the pressure sensor 4, thereby being convenient for monitoring the adjusting process in real time; simultaneously the utility model discloses can also artificially exert prestressing force to the rotor, change rotor system's eccentricity purposefully, the rotor system operational aspect of the different eccentricities of convenient contrast research.
Above-mentioned each embodiment only is used for explaining the utility model discloses, the structure, size, the setting position and the shape of each part all can change to some extent on the basis of the technical scheme of the utility model discloses on the basis of technical scheme, all according to the utility model discloses the principle is to the improvement and the equivalence transform that individual part goes on, all should not exclude the utility model discloses a protection scope is outside.
Claims (6)
1. The utility model provides a rotor system eccentricity and adjustable device of prestressing force which characterized in that: the device comprises a bracket, a first bearing seat, an adjusting rod, a pressure sensor and a force adjusting device; the first bearing seat is arranged at the central position in the support, the periphery of the first bearing seat is connected with the peripheral frame of the support through the adjusting rod respectively, the first end of the adjusting rod is connected with the first bearing seat, and the second end of the adjusting rod penetrates through the frame of the support to form an extending part; the first end of each adjusting rod is provided with one pressure sensor, and each extending part is provided with one force adjusting device.
2. The adjustable eccentricity and prestress device according to claim 1, wherein: the support adopts a square structure or a round structure.
3. The adjustable eccentricity and prestress device according to claim 1, wherein: and a rolling bearing is arranged in the first bearing seat and is in interference connection with a rotor in a rotor system through an inner ring of the rolling bearing.
4. The adjustable eccentricity and prestress device according to claim 1, wherein: the adjusting device adopts a knob structure with coarse adjustment and fine adjustment functions.
5. A test bench based on the device with adjustable eccentricity and prestress as claimed in any one of claims 1 to 4, characterized in that: the test bed comprises a test bed bracket, a rotor base, a rotor, a second bearing seat, a coupling, a motor, an unbalanced mass block, a wheel disc, an eccentricity and prestress adjustable device, a belt pulley and a speed reducer; the rotor base is arranged on the test bed bracket, and the rotor is arranged on the rotor base through a plurality of second bearing seats; one end of the rotor is connected with the output end of the motor through the coupler, and the unbalanced mass block, the wheel disc, the adjustable device of eccentricity and prestress, the belt pulley and the speed reducer are sequentially arranged at the other end of the rotor from one side close to the motor.
6. The test rig of claim 5, wherein: and an inner ring of a rolling bearing in the eccentricity and prestress adjustable device is in interference connection with the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921087296.XU CN210371710U (en) | 2019-07-12 | 2019-07-12 | Device and test bench that rotor system eccentricity and prestressing force are adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921087296.XU CN210371710U (en) | 2019-07-12 | 2019-07-12 | Device and test bench that rotor system eccentricity and prestressing force are adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210371710U true CN210371710U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921087296.XU Expired - Fee Related CN210371710U (en) | 2019-07-12 | 2019-07-12 | Device and test bench that rotor system eccentricity and prestressing force are adjustable |
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| Country | Link |
|---|---|
| CN (1) | CN210371710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137370A (en) * | 2021-11-24 | 2022-03-04 | 华中科技大学 | Space charge and PD combined test experimental equipment and experimental method |
-
2019
- 2019-07-12 CN CN201921087296.XU patent/CN210371710U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137370A (en) * | 2021-11-24 | 2022-03-04 | 华中科技大学 | Space charge and PD combined test experimental equipment and experimental method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221020 Address after: Room B51, Jiali Hotel, No. 21, Jiuxianqiao Road, Chaoyang District, Beijing 100016 Patentee after: Beijing Kexin Electromechanical Technology Research Institute Co.,Ltd. Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 12 Patentee before: BEIJING INFORMATION SCIENCE AND TECHNOLOGY University |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 |