CN108802612B - Overspeed experiment bench for automobile driving motor rotor - Google Patents
Overspeed experiment bench for automobile driving motor rotor Download PDFInfo
- Publication number
- CN108802612B CN108802612B CN201810485734.1A CN201810485734A CN108802612B CN 108802612 B CN108802612 B CN 108802612B CN 201810485734 A CN201810485734 A CN 201810485734A CN 108802612 B CN108802612 B CN 108802612B
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- Prior art keywords
- motor rotor
- overspeed
- motor
- electric spindle
- support
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- 238000002474 experimental method Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- G01R31/346—Testing of armature or field windings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The overspeed experiment bench for the automobile driving motor rotor utilizes the high-speed characteristic of the electric spindle and controls the electric spindle to provide different rotating speeds through a frequency converter, meets the speed requirements of the tested motor rotor in overspeed and overspeed endurance experiments, meets the temperature requirements of a tested motor rotor system in overspeed and overspeed endurance experiments through controlling the temperature change of an environment box, covers overspeed and overspeed endurance experiment working conditions of most types of automobile driving motor rotor, solves the problems of high cost, bench damage and the like in using a moped bench to test overspeed experiments, and has simple and compact structure and low cost.
Description
Technical Field
The invention relates to the field of electricity, in particular to a technology for testing the strength of a rotor of an automobile high-speed driving motor, and particularly relates to an overspeed experiment bench for the rotor of the automobile driving motor.
Background
New energy automobiles commonly employ electric drive systems. The trend in technology is to pursue higher power densities and higher efficiencies. The high speed of the motor is an effective technical development direction. The mainstream electric automobile generally selects a high-rotation-speed driving motor to improve the power performance. The high speed of the motor puts higher demands on the mechanical strength and rigidity of the motor rotor, so that overspeed and overspeed endurance experiments of the motor rotor become the final barrier for guaranteeing the strength, rigidity and fatigue life of the rotor. The conventional counter-dragging rack for overspeed experiments is very expensive, and the overspeed and overspeed endurance experiments can cause a certain damage to the counter-dragging rack, so that experimental resources for performing the overspeed and overspeed endurance experiments of the motor rotor are very limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an overspeed experiment bench for a rotor of an automobile driving motor, so as to solve the problems of high cost and bench damage when overspeed and overspeed endurance experiments are carried out on a towing bench.
The overspeed experiment bench for the automobile driving motor rotor comprises a water-cooled electric spindle, a motor rotor, an environment box, an upper computer, an adapter sleeve and a bench bottom plate, wherein an L-shaped plate is fixedly arranged on the bench bottom plate, the L-shaped plate comprises a vertical wall and a horizontal wall, the horizontal wall is positioned on the left side of the vertical wall, the adapter sleeve is fixedly arranged on the vertical wall of the L-shaped plate in a flange connection mode, the water-cooled electric spindle and the motor rotor are coaxially arranged through the adapter sleeve, an end cover of the water-cooled electric spindle is fixedly connected to one end of the adapter sleeve, an end cover of the motor rotor is fixedly connected to the other end of the adapter sleeve, a rotating shaft of the water-cooled electric spindle is connected with a rotating shaft of the motor rotor through an elastic coupling, a protective baffle plate is arranged above the elastic coupling, an electric spindle support frame is vertically arranged on the horizontal wall of the L-shaped plate, the tail end of the water-cooled motorized spindle is arranged on the motorized spindle support frame, the right side of the vertical wall of the L-shaped plate is provided with a support plate connected with the horizontal wall of the L-shaped plate, the support plate is vertically provided with a motor rotor support frame, the tail end of the motor rotor is arranged on the motor rotor support frame, the motor rotor support frame and the motorized spindle support frame are correspondingly arranged on the left side and the right side of the vertical wall of the L-shaped plate and used for supporting the water-cooled motorized spindle and the motor rotor, the vertical wall of the L-shaped plate is fixedly provided with a heat-insulating epoxy plate on one side of the motor rotor, the environment box is arranged on one side of the motor rotor, the bottom of the environment box is connected with a guide rail in a sliding way, the guide rail is parallel to the axial direction of a rotating shaft of the motor rotor and is fixed on a rack bottom plate, the environment box and the guide rail form a sliding pair, the environment box slides along the guide rail and is connected with the heat-insulating epoxy plate in a contact way to form a closed space, and the upper computer is connected with the environment box through a data line to accurately control the temperature change in the environment box.
Further, the water-cooling electric spindle is electrically connected with a frequency converter, the frequency converter is connected to the upper computer through a control interface, and the upper computer controls the frequency converter to adjust the rotating speed of the water-cooling electric spindle.
Further, the maximum rotation speed of the water-cooled motorized spindle is 25000rpm, the power is 26kw, and the torque is 10Nm.
Furthermore, two end faces of the adapter sleeve are subjected to one-time clamping processing.
Further, the temperature of the environment box is set to be in the range of-40 ℃ to 200 ℃ and the temperature rise rate is 5 ℃/min.
Further, the natural frequency of the overspeed test bench is greater than 450HZ.
The working principle of the invention is as follows: the high-speed characteristic of the electric spindle is utilized, the frequency converter is connected with the upper computer to control the electric spindle to provide different rotating speeds, the speed requirement of the tested motor rotor system in overspeed and overspeed endurance experiments is met, the temperature change of the environment box is controlled by the upper computer, the temperature requirement of the tested motor rotor system in overspeed and overspeed endurance experiments is met, and the adapter sleeve and the elastic coupling which are formed by one-time clamping are adopted, so that the rotating speed and torque of the electric spindle are further ensured to be smoothly transmitted to the tested rotor system.
Compared with the prior art, the invention has positive and obvious effects. According to the invention, the tested motor rotor system is driven by the high-speed motorized spindle, the temperature requirement of the tested motor rotor system is met through the environment box, overspeed and overspeed durable experimental working conditions of most types of automobile driving motor rotors are covered, and the problems of high cost, rack damage and the like in the process of using a drag rack test experiment are solved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the connection structure of the water-cooled motorized spindle, the motor rotor, the adapter sleeve and the elastic coupling in the invention.
Detailed Description
Examples
As shown in fig. 1 and 2, in the overspeed test stand for the motor rotor of the automobile driving motor, an end cover 101 of an electric spindle 1 is connected to one end of an adapter sleeve 2 through screws, an end cover 301 of a motor rotor 3 is connected to the other end of the adapter sleeve 2 through screws, a flange surface 201 of the adapter sleeve 2 is connected to a vertical wall 401 of an L-shaped plate 4 through screws, a horizontal wall 402 of the L-shaped plate 4 is connected to a stand bottom plate 5 through screws, a rotating shaft 102 of the electric spindle 1 and a rotating shaft 302 of the motor rotor 3 transmit rotating speed and torque through an elastic coupling 6, a protective baffle 7 for protection is arranged above the elastic coupling 6, tail ends of the electric spindle 1 and the motor rotor 3 are supported by an electric spindle support 8 vertically arranged on the horizontal wall 402 of the L-shaped plate 4 and a motor rotor support 10 arranged on a support plate 9 connected with the L-shaped plate 4, an epoxy plate 11 for heat insulation is arranged on one side of the vertical wall 401 of the L-shaped plate 4 close to the motor rotor 3, the epoxy plate 11 and an environment box 12 form a temperature environment of the motor rotor 3 to be tested, and the environment box 12 can move on the stand bottom plate 5 in parallel to the axial direction of the electric spindle 1 through a guide rail 13.
The electric spindle 1 adopts water cooling, and the specific performance index is that under rated working condition, the rotating speed is 25000rpm, the power is 26kw, the torque is 10Nm, the electric spindle 1 can drag most of automobile driving motor rotors 3 to do overspeed and overspeed endurance experiments, the frequency converter 14 for controlling the electric spindle 1 is connected to the upper computer 15 through an interface, and the variable speed working condition requirement of the electric spindle 1 can be realized through the input of the upper computer 15.
The adapter sleeve 2 is simultaneously connected with the electric spindle 1 and the motor rotor 3, two end faces of the adapter sleeve 2 are formed by one-time clamping processing, coaxiality of the electric spindle 1 and the motor rotor 3 is guaranteed, the elastic coupler 6 is used for transmitting rotating speed and torque, the maximum allowable rotating speed of the coupler 6 is 25000rpm, and the torque is 10Nm.
The relative sealing system consisting of the environment box 12 and the epoxy plate 11 is used for controlling the temperature of the tested motor rotor 3. The environmental chamber 12 in the present invention adopts a well-known technical scheme in the prior art, for example, a heating element, a refrigerating element and a temperature sensor are arranged in the chamber of the environmental chamber 12, and an upper computer is respectively connected with a control end of the heating element, a control end of the refrigerating element and a signal end of the temperature sensor through control lines and signal lines, so as to perform operations of constant temperature, heating or cooling on the temperature in the chamber, so as to simulate the external environmental temperature of the motor rotor 3 under various conditions, and realize the temperature-changing working condition requirement of the motor rotor 3. In the present invention, the temperature of the environmental chamber 12 varies from-40 ℃ to 200 ℃ and the temperature rise rate is 5 ℃/min.
The lowest natural frequency of the overspeed experiment bench is larger than 450Hz through finite element simulation, so that the rotation speed of the electric spindle 1 is ensured not to generate resonance in 0-25000rpm, the whole overspeed experiment bench is simple and compact in structure and low in cost, and the problems of overspeed and overspeed durability experiment cost of a rotor of an automobile driving motor, damage of the bench and the like are well solved.
Claims (6)
1. An overspeed experiment bench for a motor rotor of an automobile drive motor, which is characterized in that: the water-cooling electric spindle comprises a water-cooling electric spindle, a motor rotor, an environment box, an upper computer, an adapter sleeve and a rack bottom plate, wherein an L-shaped plate is fixedly arranged on the rack bottom plate, the L-shaped plate comprises a vertical wall and a horizontal wall, the horizontal wall is positioned on the left side of the vertical wall, the adapter sleeve is fixedly arranged on the vertical wall of the L-shaped plate in a flange connection mode, the water-cooling electric spindle and the motor rotor are coaxially arranged through the adapter sleeve, an end cover of the water-cooling electric spindle is fixedly connected to one end of the adapter sleeve, an end cover of the motor rotor is fixedly connected to the other end of the adapter sleeve, a rotating shaft of the water-cooling electric spindle is connected with a rotating shaft of the motor rotor through an elastic coupling, a protective baffle is arranged above the elastic coupling, an electric spindle support is vertically arranged on the horizontal wall of the L-shaped plate, a supporting plate is vertically arranged on the right side of the vertical wall of the L-shaped plate, a motor rotor support is vertically arranged on the supporting plate, the motor rotor support is vertically arranged on the vertical end support of the motor rotor, the motor rotor support is correspondingly arranged on the motor rotor support, the motor rotor support is arranged on the left side of the electric spindle support, the motor support is in parallel to the motor support, the motor support is in parallel to the right side of the electric spindle, and is in parallel to the guide rail, the motor rotor is in parallel to the vertical guide rail, the motor is arranged on the two sides of the motor box, and is in parallel to the guide rail, and is connected to the motor box, and is connected to the environment, and the side of the motor box is in the environment, and the vertical box is connected to the vertical guide rail is in the environment, and the environment. The upper computer is connected with the environment box through a data line, and the temperature change in the environment box is accurately controlled.
2. An overspeed test rig for a motor rotor of an automotive drive motor as set forth in claim 1, wherein: the water-cooling electric spindle is electrically connected with a frequency converter, the frequency converter is connected with the upper computer through a control interface, and the upper computer controls the frequency converter to adjust the rotating speed of the water-cooling electric spindle.
3. An overspeed test rig for a motor rotor of an automotive drive motor as set forth in claim 1, wherein: the maximum rotating speed of the water-cooled motorized spindle is 25000rpm, the power is 26kw, and the torque is 10Nm.
4. An overspeed test rig for a motor rotor of an automotive drive motor as set forth in claim 1, wherein: and two end surfaces of the adapter sleeve are subjected to one-time clamping processing.
5. An overspeed test rig for a motor rotor of an automotive drive motor as set forth in claim 1, wherein: the temperature of the environment box is set to be in the range of-40 ℃ to 200 ℃ and the temperature rise rate is 5 ℃/min.
6. An overspeed test rig for a motor rotor of an automotive drive motor as set forth in claim 1, wherein: the natural frequency of the overspeed test bench is greater than 450HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485734.1A CN108802612B (en) | 2018-05-21 | 2018-05-21 | Overspeed experiment bench for automobile driving motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485734.1A CN108802612B (en) | 2018-05-21 | 2018-05-21 | Overspeed experiment bench for automobile driving motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108802612A CN108802612A (en) | 2018-11-13 |
| CN108802612B true CN108802612B (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810485734.1A Active CN108802612B (en) | 2018-05-21 | 2018-05-21 | Overspeed experiment bench for automobile driving motor rotor |
Country Status (1)
| Country | Link |
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| CN (1) | CN108802612B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596409A (en) * | 2019-01-21 | 2019-04-09 | 浙江飞旋科技有限公司 | Carbon fiber sheath performance test machine hypervelocity device |
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| EP0824969A2 (en) * | 1996-08-16 | 1998-02-25 | SIGMA LABORZENTRIFUGEN GmbH | Control system for laboratory centrifuge |
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| Publication number | Publication date |
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| CN108802612A (en) | 2018-11-13 |
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