CN103630319B - Based on wind-powered electricity generation high speed shaft bearing shaft to the shock table loaded - Google Patents
Based on wind-powered electricity generation high speed shaft bearing shaft to the shock table loaded Download PDFInfo
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- CN103630319B CN103630319B CN201310509182.0A CN201310509182A CN103630319B CN 103630319 B CN103630319 B CN 103630319B CN 201310509182 A CN201310509182 A CN 201310509182A CN 103630319 B CN103630319 B CN 103630319B
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Abstract
A kind of based on the shock table of wind-powered electricity generation high speed shaft bearing shaft to loading, comprise pedestal platform, drive motor, flywheel, clutch coupling, rotary main shaft, main examination bearing, axial loading device and magnetic powder brake, described drive motor is arranged on pedestal platform one end, described drive motor output shaft is connected with one end of described flywheel central shaft, described clutch coupling by support installing on pedestal platform, the described other end of flywheel central shaft is connected with the input end of clutch coupling, the output terminal of described clutch coupling is connected with one end of described rotary main shaft, described magnetic powder brake is arranged on the pedestal platform other end, the described rotary main shaft other end is connected with the brake axle of magnetic powder brake, described main examination bearing to be arranged on described rotary main shaft and to be fixed on described pedestal platform.The invention provides a kind of effective simulation turning shock loads, bearing shaft to load convenient, reduce costs based on wind-powered electricity generation high speed shaft bearing shaft to load shock table.
Description
Technical field
The present invention relates to a kind of bearing shaft to the shock table loaded, especially a kind of based on the shock table of wind-powered electricity generation high speed shaft bearing shaft to loading.
Background technology
The Main Function of wind turbine gearbox is that the power transmission that produced under wind-force effect by wind wheel makes it obtain corresponding rotating speed to generator.The mechanism of wind turbine gearbox adopts two-stage Gear Planet Transmission to add the upper level driving of parallel axes, the two-stage planet transferring structure of usual slow speed turbine stage and intergrade in use shows comparatively stable, but as the end of wind turbine gearbox transmission, high speed shaft bearing is subject to larger dynamic axial power, and as the middle link of wind turbine gearbox and generator, high speed shaft bearing generating start and at the end of often need to bear larger bump steer load, situation about breaking down is many, it is serious that this fault generally shows as bearing axial float, raceway lubrication is insufficient, temperature anomaly, the softening formation spot corrosion of bearing roller surface is peeled off even cracked, for avoiding the problems referred to above, general needs carry out the impulse test under axial loading environment to the wind-powered electricity generation high speed shaft bearing that design is produced, by verifying the reliability of its quality to the shock load simulation be subject in bearing use procedure.
Traditional bearing test device can carry out axis to bearing usually, the loading of radial direction or compound, and carry out fatigue life test under loaded conditions, and in the actual use procedure of bearing, find fatigue lifetime of doing under bearing is difficult to reach laboratory environment, this is because conventional bearing fatigue life test device can only adopt fixing rotary load analogue means as flying wheel, brake, some test unit adopts electric closure technology to implement to save efficiency, but due to the Frequency Response of generator, electric closure device can only simulate the slower load curve of variation characteristic, and the scragging in bearing rotation process cannot be accomplished, therefore plain fatigue durability test can only make the serviceable life of bearing in the little situation of load variation characteristic, in addition, existing bearing shaft generally comprises hydraulic loaded to loading technique, pneumatically loading, mechanical load, the power of hydraulic loaded is larger, loading curve is accurate, but frequency response is poor, implementation cost is high, uncontrollable and the rapid wear of pneumatic element of the loading procedure characteristic of pneumatically loading, mechanical load can realize comparatively accurate loading and frequency response is better, but the building of charger needs to take certain space and flexible poor, different subjects is needed to adopt different frocks to carry out scheme implementation.
Summary of the invention
In order to overcome, existing bearing test device cannot carry out shock load simulation to bearing, bearing axial loading device implements the deficiency complicated, cost is higher, the invention provides a kind of effective simulation turning shock loads, bearing shaft to load convenient, reduce costs based on wind-powered electricity generation high speed shaft bearing shaft to the shock table loaded.
The technical scheme that the present invention solves the employing of its technical matters is:
A kind of based on the shock table of wind-powered electricity generation high speed shaft bearing shaft to loading, comprise pedestal platform, drive motor, flywheel, clutch coupling, rotary main shaft, main examination bearing, axial loading device and magnetic powder brake, described drive motor is arranged on pedestal platform one end, described drive motor output shaft is connected with one end of described flywheel central shaft, described clutch coupling by support installing on pedestal platform, the described other end of flywheel central shaft is connected with the input end of clutch coupling, the output terminal of described clutch coupling is connected with one end of described rotary main shaft, described magnetic powder brake is arranged on the pedestal platform other end, the described rotary main shaft other end is connected with the brake axle of magnetic powder brake, described main examination bearing to be arranged on described rotary main shaft and to be fixed on described pedestal platform,
Described axial loading device comprises annular magnetic steel, ring electromagnet, line slide rail and linear electric motors, described annular magnetic steel is sleeved on the upper of described rotary main shaft, described line slide rail is arranged on pedestal platform, what described ring electromagnet can horizontally slip is arranged on described line slide rail, described rotary main shaft concentric is through the center ring of described ring electromagnet, described linear electric motors are arranged on pedestal platform, the output shaft of linear electric motors is fixedly connected with the pedestal of described ring electromagnet, the output shaft of described linear electric motors and described ring electromagnet realize linking along described line slideway direction.
Further, be processed with an axis in the middle of described rotary main shaft and load step, described axially loading outside step and described main examination bearing inner race is fitted, apply axial force by the squeezing action axially loading step to main examination bearing, the flange outside diameter axially loading step should be greater than the inner ring internal diameter of main examination bearing and be less than the external diameter of inner ring.
Further, described shock table also comprises accompanies examination bearing, accompany examination bearing be arranged on one end of described rotary main shaft and be fixed on described pedestal platform, described in accompany examination bearing between described clutch coupling and described main examination bearing.In this preferred version, adopt one and accompany examination bearing, better test environment can be provided, preferably, described in accompany examination bearing consistent with the model of main examination bearing.
Preferably, described ring electromagnet adopts direct current supply, and magnetic direction is the central axis direction along rotary main shaft, and described ring electromagnet can flow to by the positive and negative electrode changing DC current the south, the direction to the north pole that change magnetic field.
Preferably, described magnetic powder brake afterbody is provided with fan-cooled radiator, in order to lower the temperature to magnetic powder brake, prevent the magnetic temperature of brake inside too high and lost efficacy, as preferred another kind of scheme, when testing table carries out the overload impulse test of 300%, described magnetic powder brake afterbody needs to install water-cooling type radiator, by recirculated water cooling in order to cooling down.
Technical conceive of the present invention is: by the loading simulation bearing impact accelerator of flywheel and clutch coupling, realize bearing impact moderating process by magnetic powder brake braking able to programme, adopt the electromagnetic interaction of ring electromagnet and annular magnetic steel to realize axially loading to bearing.
Beneficial effect of the present invention is mainly manifested in: (1) authentic and validly can carry out impulse test to bearing by flywheel gear and magnetic powder brake; (2) adopt electromagnetism to load to load bearing, device for carrying out said is succinct, and cost is lower; (3) utilize linear electric motors fast response time, the feature that control accuracy is high can carry out effective dynamic load to bearing.
Accompanying drawing explanation
Fig. 1 is that bearing shaft is to the isometric view loading shock table.
Fig. 2 is that bearing shaft is to the vertical view loading shock table.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
See figures.1.and.2, a kind of based on the shock table of wind-powered electricity generation high speed shaft bearing shaft to loading, comprise pedestal platform 1, drive motor 2, flywheel 3, clutch coupling 4, rotary main shaft 5, main examination bearing 6, accompany examination bearing 7, axial loading device 8 and magnetic powder brake 9,
Described drive motor 2 is three-phase frequency-conversion speed-regulation motor, as the rotary driving source of testing table, Southern Part of Anhui Province motor selected by motor, model YVF2-90S-4, rated power is 1.1kW, rated speed 1500rpm, variable frequency range is 5 ~ 100Hz, described drive motor 2 is arranged on pedestal platform 1 one end, described drive motor 2 output shaft is connected by diaphragm type coupler with one end of described flywheel 3 central shaft, electromagnetic clutch selected by described clutch coupling 4, adopt 24V direct current supply, output power is 20W, static friction torque 25Nm, kinetic friction torque 20Nm, described clutch coupling 3-1 is arranged in L-type support by the threaded hole that 3 are positioned at same circumference 120 ° angularly interval, the other end of described flywheel 3 central shaft is fixedly connected with by flat key with the input end of clutch coupling 4, the output terminal of described clutch coupling 4 is connected by shaft coupling with one end of described rotary main shaft 5, described magnetic powder brake 9 is arranged on the other end of pedestal platform 1, the other end of described rotary main shaft 5 is connected by shaft coupling with the brake axle of magnetic powder brake 9, described main examination bearing 6 to be arranged on described rotary main shaft 5 and to be fixed on described pedestal platform 1, one is had axially to load shaft shoulder 5-1 in the middle of described rotary main shaft 5, fit in the described outside axially loading shaft shoulder 5-1 and described main examination bearing 6 inner ring, axial force is applied to main examination bearing 6 by the axial compression axially loading step 5-1, the flange outside diameter axially loading step should be greater than the inner ring internal diameter of main examination bearing and be less than the external diameter of inner ring, described examination bearing 7 of accompanying is arranged on one end of described rotary main shaft 5 and is fixed on described pedestal platform 1, described examination bearing 7 of accompanying is between described clutch coupling 4 and described main examination bearing 6, the effect of examination bearing is accompanied to be to provide stable supporting-point to rotary main shaft 5 and providing a good rotary test environment to main examination bearing 6, select model consistent with described main examination bearing 6 model.
Described axial loading device 8 comprises annular magnetic steel 8-1, ring electromagnet 8-2, line slide rail 8-3 and linear electric motors 8-4, described annular magnetic steel 8-1 adopts neodymium iron boron strong magnets, select the magnetic material of the N40 trade mark, plating nickel on surface, described annular magnetic steel 8-1 is sleeved on described rotary main shaft 5, side is located by the shaft shoulder, opposite side is located by stop screw, thus ensure that annular magnetic steel 8-1 is at axial restraint, described line slide rail 8-3 is arranged on pedestal platform 1 by bolt, described line slide rail 8-3 adopts standard component, model MGN12H, active strokes is 200mm, described ring electromagnet 8-2 adopts coil type ring electromagnet, rated operational voltage is 36V, maximum suction can reach 150Kg, starting power is 500VA, holding power is 90VA, what the base of described ring electromagnet 8-2 can horizontally slip is arranged on described line slide rail 8-3, described rotary main shaft 5 concentric is through the center ring of described ring electromagnet 8-2, gap is had between described rotary main shaft 5 and described ring electromagnet 8-2, described linear electric motors 8-4 rated voltage is 24V direct current, output shaft stroke is 150mm, thrust output 750N, described linear electric motors 8-4 is arranged on pedestal platform 1, the output shaft of straight-line electric 8-4 machine is fixedly connected with the pedestal of described ring electromagnet 8-2, the output shaft of described linear electric motors 8-4 and described ring electromagnet 8-2 realize linking along described line slideway 8-3 direction.
In the present embodiment, it is as follows that the implementation step of impacting acceleration and deceleration simulated by described main examination bearing 6, initial clutch coupling 4 is in disengaged condition, magnetic powder brake 9 is in without magnetic state, after drive motor 2 flywheel driven 3 rotates to certain rotating speed, clutch coupling 4 adhesive, now because the high-speed rotation of flywheel 3 impacts acceleration by clutch coupling 4 driven rotary main shaft 5, completes the impact accelerated loading of main examination bearing 6; When rotary main shaft 5 is in higher rotation speed even running, applies sharply load by programmable magnetic powder brake 9, rotary main shaft 5 is slowed down, complete and the impact load of described main examination bearing 6 is tested.
Described axial loading device 8 realizes the axial loading procedure of main examination bearing 6 by the interaction of ring electromagnet 8-2 and annular magnetic steel 8-1, a magnetic field is vertically produced after described ring electromagnet 8-2 powers on, annular magnetic steel 8-1 is permanent magnet, self there is a magnetic field vertically, described ring electromagnet 8-2 realizes the dynamic load to annular magnetic steel 8-1 by the straight reciprocating motion of linear electric motors 8-4, annular magnetic steel 8-1 loads the shaft shoulder by the axis of rotary main shaft 5 and implements axial loading to main examination bearing 5, in addition, the frequency response of linear electric motors 8-4 is special higher, higher acceleration movement can be realized, therefore the higher dynamic load of frequency can be realized to main examination bearing 6.
Claims (5)
1. one kind based on wind-powered electricity generation high speed shaft bearing shaft to load shock table, it is characterized in that: described shock table comprises pedestal platform, drive motor, flywheel, clutch coupling, rotary main shaft, main examination bearing, axial loading device and magnetic powder brake, described drive motor is arranged on pedestal platform one end, described drive motor output shaft is connected with one end of described flywheel central shaft, described clutch coupling by support installing on pedestal platform, the described other end of flywheel central shaft is connected with the input end of clutch coupling, the output terminal of described clutch coupling is connected with one end of described rotary main shaft, described magnetic powder brake is arranged on the pedestal platform other end, the described rotary main shaft other end is connected with the brake axle of magnetic powder brake, described main examination bearing to be arranged on described rotary main shaft and to be fixed on described pedestal platform,
Described axial loading device comprises annular magnetic steel, ring electromagnet, line slide rail and linear electric motors, described annular magnetic steel is sleeved on the upper of described rotary main shaft, described line slide rail is arranged on pedestal platform, what described ring electromagnet can horizontally slip is arranged on described line slide rail, described rotary main shaft concentric is through the center ring of described ring electromagnet, described linear electric motors are arranged on pedestal platform, the output shaft of described linear electric motors is fixedly connected with the pedestal of described ring electromagnet, the output shaft of described linear electric motors and described ring electromagnet realize linking along described line slideway direction.
2. as claimed in claim 1 based on the shock table of wind-powered electricity generation high speed shaft bearing shaft to loading, it is characterized in that: be processed with an axis in the middle of described rotary main shaft and load step, described axially loading outside step and described main examination bearing inner race is fitted, and the flange outside diameter axially loading step is greater than the inner ring internal diameter of main examination bearing and is less than the external diameter of inner ring.
3. as claim 1 or 2 or as described in based on wind-powered electricity generation high speed shaft bearing shaft to load shock table, it is characterized in that: described shock table also comprises accompanies examination bearing, described accompany examination bearing be arranged on one end of described rotary main shaft and be fixed on described pedestal platform, described in accompany examination bearing between described clutch coupling and described main examination bearing.
4. as claim 1 or 2 or as described in based on wind-powered electricity generation high speed shaft bearing shaft to load shock table, it is characterized in that: described ring electromagnet is direct current supply electromagnet, the magnetic direction of described ring electromagnet is the central axis direction along rotary main shaft.
5. as claim 1 or 2 or as described in based on wind-powered electricity generation high speed shaft bearing shaft to load shock table, it is characterized in that: described magnetic powder brake afterbody is provided with the fan-cooled radiator in order to lower the temperature to magnetic powder brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310509182.0A CN103630319B (en) | 2013-10-24 | 2013-10-24 | Based on wind-powered electricity generation high speed shaft bearing shaft to the shock table loaded |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310509182.0A CN103630319B (en) | 2013-10-24 | 2013-10-24 | Based on wind-powered electricity generation high speed shaft bearing shaft to the shock table loaded |
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| CN103630319A CN103630319A (en) | 2014-03-12 |
| CN103630319B true CN103630319B (en) | 2015-10-28 |
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| CN201310509182.0A Expired - Fee Related CN103630319B (en) | 2013-10-24 | 2013-10-24 | Based on wind-powered electricity generation high speed shaft bearing shaft to the shock table loaded |
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| CN110146299A (en) * | 2019-06-27 | 2019-08-20 | 重庆天骄航空动力有限公司 | A kind of electromagnetic axial force loading device |
| CN110231167A (en) * | 2019-07-09 | 2019-09-13 | 南京农业大学 | A kind of Double gear box fault diagnostic test platform |
| CN110987428B (en) * | 2019-11-25 | 2022-02-08 | 中铁工程装备集团有限公司 | Main bearing axial force loading test device |
| CN111426475B (en) * | 2020-05-06 | 2021-09-17 | 湖南汉能科技有限公司 | Main shaft bearing impact test platform |
| CN112393905B (en) * | 2020-12-14 | 2022-09-20 | 大连工业大学 | Rolling bearing tester with external impact excitation |
| CN113155461B (en) * | 2021-06-02 | 2022-08-02 | 南京工业大学 | Wind power main shaft bearing test bed |
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| US5133211A (en) * | 1991-02-07 | 1992-07-28 | Aircraft Braking Systems Corporation | Wheel bearing test system |
| CN201993232U (en) * | 2011-01-21 | 2011-09-28 | 华南理工大学 | Bus hub bearing loading simulation testing device |
| CN203490054U (en) * | 2013-10-24 | 2014-03-19 | 浙江大学 | Impact testing stand based on axial loading of wind power high-speed shaft bearing |
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2013
- 2013-10-24 CN CN201310509182.0A patent/CN103630319B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133211A (en) * | 1991-02-07 | 1992-07-28 | Aircraft Braking Systems Corporation | Wheel bearing test system |
| CN201993232U (en) * | 2011-01-21 | 2011-09-28 | 华南理工大学 | Bus hub bearing loading simulation testing device |
| CN203490054U (en) * | 2013-10-24 | 2014-03-19 | 浙江大学 | Impact testing stand based on axial loading of wind power high-speed shaft bearing |
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