CN113589164A - Motor tester with long service life and compact structure - Google Patents
Motor tester with long service life and compact structure Download PDFInfo
- Publication number
- CN113589164A CN113589164A CN202110788621.0A CN202110788621A CN113589164A CN 113589164 A CN113589164 A CN 113589164A CN 202110788621 A CN202110788621 A CN 202110788621A CN 113589164 A CN113589164 A CN 113589164A
- Authority
- CN
- China
- Prior art keywords
- motor
- tester
- bearing
- rotor
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Abstract
The invention provides a long-life compact-structure motor tester which can obviously reduce the number of parts and components of the motor tester, reduce the difficulty in production and assembly and prolong the service life of the tester. The invention cancels a gear torque transmission system between the tester rotor and the high-speed motor rotor, the high-speed motor rotor is directly assembled on the tester rotor, and the two rotors are changed into one rotor, so that the number of structural parts of the whole tester is greatly reduced, the structure is more compact, the coupling influence between the two rotors is avoided, and the robustness of the whole tester is better. Compared with other motor testers, the motor tester has the advantages of simple structure and low production and assembly difficulty; because a transmission gear system between the high-speed motor rotor and the tester rotor is cancelled, the service life of the tester is obviously prolonged, the working time is long, the tester belongs to a long-life high-speed rotor, and the requirement on the reliability of each part of the system is high.
Description
Technical Field
The invention relates to the technical field of motor testers, in particular to a long-life motor tester with a compact structure.
Background
The high-speed motor is used as a power supply of the aero-engine, provides electric energy for the operation of the whole electrical system of the engine, is a core component for ensuring the normal operation of the aero-engine, and the safety of the aero-engine is directly influenced by the quality of the working performance of the high-speed motor. Therefore, the operating performance of the newly designed high-speed motor needs to be verified before installation. In order to meet the requirement of the high-speed motor on the rotating speed, a special tester needs to be designed according to the working mode of the motor. For a small-sized aircraft engine, the working speed can reach up to sixty thousand revolutions per minute, the motor tester ensures that all indexes meet the design requirements in the high-speed running process, and parameters such as vibration, displacement and the like do not exceed the design values. Meanwhile, the motor tester also meets the use requirement of more than 500 hours. The existing motor tester is dragged and rotated by a high-power motor, a high-speed motor rotor and a tester rotor are driven by a gear system, the structure is complex, transmission parts are required to be replaced when the motor tester generally works for dozens of hours, and the service life is short.
Therefore, the traditional motor tester has the advantages of multiple parts, complex structure, large volume and no assembly. The torque is transmitted between the rotor of the motor tester and the rotor of the high-speed motor through the gear system, the two rotors are coupled together in the working process, slight disturbance easily causes instability of the two rotors, and the safety is low. The gear system torque transmission has high requirements on processing of all parts of the tester, and the assembly difficulty is high, so that the production period is long. Meanwhile, the gear transmission also needs lubricating oil to cool and lubricate in the working process, so that the difficulty of a lubricating system is increased. Generally, after the motor tester works for dozens of hours, a transmission gear and a bearing must be replaced, and the service life of the tester is short.
Disclosure of Invention
In view of the above, the invention provides a long-life compact-structure motor tester, which can significantly reduce the number of parts and components of the motor tester, reduce the difficulty in production and assembly, and prolong the service life of the tester (over 500 hours).
In order to achieve the purpose, the technical scheme of the invention is as follows:
a long-life compact structure motor tester is dragged by a motor on a test bed and comprises a motor seat component, a bearing seat component, a locking nut, a bearing, a shaft, a transmission gear, an oil supply component and an end cover;
the tester adopts a double-fulcrum supporting structure, a front fulcrum is positioned in the motor seat assembly, and a rear fulcrum is positioned in the bearing seat assembly; the tested motor rotor is positioned between the front branch point and the rear branch point and is arranged on the shaft through a bearing, the locking nut compresses the motor rotor, and the friction force of the front end surface and the rear end surface of the motor rotor is used for transmitting torque;
the bearing seat assembly and the test bed speed increaser transmit torque through the transmission gear, and the inner ring cylindrical surface of the motor seat is matched with the test bed;
the motor stator is fixed on the end surface of the motor base, the motor base is provided with a lubricating oil interface, one end of the lubricating oil interface penetrates through the motor base and is inserted into the motor stator, and the other end of the lubricating oil interface is directly connected with the oil supply assembly;
the end cover is used for pressing the bearing to prevent the bearing from axially moving, and a nozzle for lubricating the bearing is arranged on the end cover and used for preventing lubricating oil from leaking outwards in the working process.
The locking nut comprises a rear locking nut and a front locking nut, and the motor rotors are respectively pressed from two ends.
The bearing seat assembly comprises a bearing seat, a pressing sleeve and a bolt; the pressing sleeve is tightly matched with the bearing seat, and the pressing sleeve is fixed on the bearing seat by a bolt.
Wherein, the matching surface of the two is coated with the loctite 620.
Wherein, the locking wire is loosened after the bolt is screwed.
The bearing comprises a rear end bearing and a front end bearing, and the motor rotor is arranged on the shaft from two ends respectively.
The balance device further comprises a balance ring, wherein the balance ring is arranged on the shaft and sleeved behind the front end bearing.
Has the advantages that:
the high-speed motor tester with the long service life and the compact structure cancels a gear torque transmission system between the tester rotor and the high-speed motor rotor, the high-speed motor rotor is directly assembled on the tester rotor, and the two rotors are changed into one rotor, so that the number of structural parts of the whole tester is greatly reduced, the structure is more compact, the coupling influence between the two rotors is avoided, and the robustness of the whole tester is better. Compared with other motor testers, the motor tester has the advantages of simple structure and low production and assembly difficulty; because a transmission gear system between the high-speed motor rotor and the tester rotor is cancelled, the service life of the tester is obviously prolonged, the working time is long, the tester belongs to a long-life high-speed rotor, and the requirement on the reliability of each part of the system is high.
The tester has high rotating speed up to sixty thousand revolutions per minute, and belongs to a high-speed rotor system.
Drawings
Fig. 1 is a schematic diagram of a two-dimensional structure of a motor tester of the present invention.
Wherein, 1-slotted hexagon screw M5 is multiplied by 10; 2-slotted hexagon screws M5 × 12; 3, a spring; 4-O-ring seal; 5-O-ring seal; 6-O type sealing ring; 7-slotted hexagon screws M10 x 10; 8-oil interface; 9-a rotor assembly; 10-end cap; 11-motor stator; 12-a motor base; 13-a bearing housing assembly; 14-plug.
FIG. 2 is a schematic view of a motor tester of the present invention employing a dual-pivot support structure.
21-a rear locking nut; 22 — rear end bearing; 23-a rotor of the motor; 24-axis; 25-a balancing ring; 26-front end bearing; 27-a transmission gear; 28-front locking nut;
FIG. 3 is a schematic view of a bearing housing assembly of the present invention.
Wherein, 31-pressing sleeve; 32-bearing seat.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The high-speed motor tester is a compact high-speed rotor system and comprises a rotor assembly 9, a bearing seat assembly 13, an oil supply assembly and a motor seat assembly, wherein the two-dimensional structure is shown in figure 1. The high-speed motor tester is dragged by a high-power motor on a test bed, and a transmission gear at the right end of the tester is matched with a planetary gear of a speed increaser of the test bed to transmit torque so as to drive a rotor of the motor tester to reach a target rotating speed.
The motor tester adopts a double-pivot supporting structure, as shown in fig. 2, a front pivot is located in the motor base assembly, and a rear pivot is located in the bearing base assembly 13. The measured high-speed motor rotor 23 is positioned between the front and rear two support points, is arranged on the shaft 24 in a hot-mounting mode, compresses the motor rotor 23 by the pretightening force of the locking nuts 21 and 28, and transmits torque by the friction force of the front and rear end faces of the motor rotor 23.
The torque transmission mode cancels a gear assembly, does not need to specially design an oil supply device for the gear torque transmission, and obviously reduces the number of parts of the tester. More importantly, in the high-speed rotation process of the rotor, the gear torque transmission can apply a radial force to the rotor, the stability of the rotor at a high rotating speed is greatly influenced, very high requirements are provided for the residual unbalance amount of the rotor and the coaxiality of the front fulcrum and the rear fulcrum, and the difficulty in production and assembly is increased. After the gear is cancelled, radial force disappears in the working process, the requirements on the residual unbalance of the rotor and the coaxiality of the front fulcrum and the rear fulcrum are reduced, the difficulty of the rotor and the assembly is reduced, the requirement for testing a high-speed motor is met, the production efficiency is improved, and the generation cost is reduced. Particularly, when the test requirements of the motors in batches are met, the development period of the product can be shortened.
The bearing seat assembly 13 and the test bed speed increaser transmit torque through a gear, the inner ring cylindrical surface on the right side of the motor seat 12 is precisely matched with the test bed, and the matching precision determines the coaxiality of a motor tester rotor and a motor rotor, so that the bearing seat assembly is a key factor for determining whether the motor tester can normally run. Specifically, the bearing seat assembly 13 comprises a bearing seat 32, a pressing sleeve 31 and 3M 6 bolts, as shown in FIG. 3, wherein the pressing sleeve 31 and the bearing seat 32 are tightly fitted, and the matching surface of the pressing sleeve 31 and the bearing seat 32 is coated with a layer 620. The pressing sleeve 31 is fixed on the bearing seat 32 by the M6 bolt, and the locking wire is loosened after 3M 6 bolts are screwed.
The end cover 10 is used for pressing the bearing to prevent the bearing from axially moving, a nozzle for lubricating the bearing is arranged on the end cover 10, and the end cover 10 is used for preventing lubricating oil from leaking outwards in the working process.
The high-speed motor tester with compact structure provided by the invention has the advantages of stable operation, good performance and long service life. Compared with the traditional high-speed motor tester, the high-speed motor tester has the advantages of being simple in structure, capable of remarkably reducing the number of parts and components of the motor tester, reducing the difficulty of production and assembly and improving the working efficiency.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A long-life compact structure motor tester is dragged by a motor on a test bed and is characterized by comprising a motor seat component, a bearing seat component, a locking nut, a bearing, a shaft, a transmission gear, an oil supply component and an end cover;
the tester adopts a double-fulcrum supporting structure, a front fulcrum is positioned in the motor seat assembly, and a rear fulcrum is positioned in the bearing seat assembly; the tested motor rotor is positioned between the front branch point and the rear branch point and is arranged on the shaft through a bearing, the locking nut compresses the motor rotor, and the friction force of the front end surface and the rear end surface of the motor rotor is used for transmitting torque;
the bearing seat assembly and the test bed speed increaser transmit torque through the transmission gear, and the inner ring cylindrical surface of the motor seat is matched with the test bed;
the motor stator is fixed on the end surface of the motor base, the motor base is provided with a lubricating oil interface, one end of the lubricating oil interface penetrates through the motor base and is inserted into the motor stator, and the other end of the lubricating oil interface is directly connected with the oil supply assembly;
the end cover is used for pressing the bearing to prevent the bearing from axially moving, and a nozzle for lubricating the bearing is arranged on the end cover and used for preventing lubricating oil from leaking outwards in the working process.
2. The motor tester of claim 1 wherein the lock nut comprises a rear lock nut and a front lock nut that compress the motor rotor from both ends, respectively.
3. The motor tester of claim 1 wherein the bearing block assembly comprises a bearing block, a press sleeve and a bolt; the pressing sleeve is tightly matched with the bearing seat, and the pressing sleeve is fixed on the bearing seat by a bolt.
4. The motor tester of claim 3 wherein the mating surfaces are coated with loctite 620.
5. A motor tester as claimed in claim 3 or 4, wherein the bolt is tightened to lock the wire against loosening.
6. A motor tester as claimed in claim 3 or 4, in which the bearings comprise a rear end bearing and a front end bearing, the motor rotor being mounted on the shaft from either end respectively.
7. The motor tester of claim 6 further comprising a balancing ring disposed on the shaft, nested behind the front end bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788621.0A CN113589164A (en) | 2021-07-13 | 2021-07-13 | Motor tester with long service life and compact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788621.0A CN113589164A (en) | 2021-07-13 | 2021-07-13 | Motor tester with long service life and compact structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113589164A true CN113589164A (en) | 2021-11-02 |
Family
ID=78247504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110788621.0A Pending CN113589164A (en) | 2021-07-13 | 2021-07-13 | Motor tester with long service life and compact structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113589164A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2592910Y (en) * | 2002-12-18 | 2003-12-17 | 上海凯泉泵业（集团）有限公司 | Improved arrangement structure of main bearing and mechanical sealing for submersible pollution discharge pump |
| CN103994890A (en) * | 2014-06-06 | 2014-08-20 | 中国航空综合技术研究所 | Swing wear life test clamp of joint bearing |
| CN110006659A (en) * | 2019-04-15 | 2019-07-12 | 大连理工大学 | A kind of gear drive Duct-Burning Turbofan low pressure rotor system model exerciser |
-
2021
- 2021-07-13 CN CN202110788621.0A patent/CN113589164A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2592910Y (en) * | 2002-12-18 | 2003-12-17 | 上海凯泉泵业（集团）有限公司 | Improved arrangement structure of main bearing and mechanical sealing for submersible pollution discharge pump |
| CN103994890A (en) * | 2014-06-06 | 2014-08-20 | 中国航空综合技术研究所 | Swing wear life test clamp of joint bearing |
| CN110006659A (en) * | 2019-04-15 | 2019-07-12 | 大连理工大学 | A kind of gear drive Duct-Burning Turbofan low pressure rotor system model exerciser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110439847B (en) | Centrifugal compressor shafting structure and centrifugal compressor | |
| CN106838034B (en) | Coupling for horizontal shaft ocean current energy generator | |
| CN113589164A (en) | Motor tester with long service life and compact structure | |
| CN216199826U (en) | Bearing group applied to power turbine | |
| CN110374691B (en) | Radial flow turbine power generation system gas lubrication rotor structure | |
| CN110529427B (en) | Mounting structure of compressor impeller | |
| CN109357870B (en) | Radial air bearing performance test machine | |
| CN109489950B (en) | Connecting structure for fatigue test of high-pressure compressor disk of engine | |
| CN213392656U (en) | Roots vacuum pump | |
| CN105909378B (en) | The mixed generator of extended-range electricity and engine crankshaft coupling arrangement | |
| US7411328B2 (en) | Dynamo electric machines | |
| CN112436675B (en) | Double-generator structure of aircraft engine | |
| CN110254730B (en) | Generator installation device and aviation aircraft | |
| CN2285534Y (en) | Submerged motor for well | |
| CN110318812B (en) | Gas lubrication ceramic rotor of radial flow turbine power generation system and manufacturing method thereof | |
| CN110071602B (en) | Integrated electric drive system oil-cooled motor | |
| CN112780410A (en) | Compact type turbine compressor structure | |
| CN201196154Y (en) | Diesel engine-driving combination type high speed blowing machine | |
| CN215120509U (en) | Magnetic eddy current soft starter rotor with antifriction structure | |
| CN215928164U (en) | Driving device for torque limiter test and torque limiter test system | |
| CN111006866A (en) | Sliding bearing PV test loading mechanism | |
| CN108098541B (en) | Single-arm grinding machine | |
| CN220828444U (en) | Tensioning structure of axial motor | |
| CN114018388B (en) | Multifunctional vibration detection comprehensive test bed | |
| CN216530854U (en) | Take temperature monitoring's external rotor electric machine shafting arrangement structure and aircraft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |