CN104568439A - Test table for bearing of 3.6-meter large-sized wind generator - Google Patents
Test table for bearing of 3.6-meter large-sized wind generator Download PDFInfo
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- CN104568439A CN104568439A CN201410840452.0A CN201410840452A CN104568439A CN 104568439 A CN104568439 A CN 104568439A CN 201410840452 A CN201410840452 A CN 201410840452A CN 104568439 A CN104568439 A CN 104568439A
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Abstract
The invention discloses a test table for a bearing of a 3.6-meter large-sized wind generator, and belongs to the field of performance test devices for large-sized wind generator bearings. The test table comprises an axial pressing part, a radial pressing part, a starting torque oil cylinder, two guide rails, a base, a foundation, a pull-in winch, a pull-out winch, a bracket, a bearing seat, a lower flange and a plurality of hydraulic motor drive devices. The test table has combined loading and detection functions of axial moment, radial moment, tipping moment, friction moment and startup friction moment, also has a comprehensive detection function for performing a speed change test, a load change test and a direction change test on the special bearing for the large-sized wind generator in a combined moment loading state, completely meets comprehensive detection requirements of the special bearing for the large-sized wind generator on a performance test and a life test of the bearing, and is of great significance on technical development of bearings of wind generators in China.
Description
Technical field
The invention belongs to the proving installation field of large fan bearing performance, be specifically related to a kind of 3.6 meters of large fan bearing test-beds.
Background technology
Diameter more than 3.6 meters, the large fan bearing of rated power 1.5 ~ 3MW as the core component of aerogenerator, its demand is in linearly ascendant trend in recent years.
It is weigh the important indicator of its combination property that large-scale wind electricity becomes all multiparameters such as slurry bearing or driftage theoretical life-span of bearing products, stability, greasy property, sealing property and load-bearing capacity, these indexs need by have starting friction moment and speed change, variable load, break-in experimental test function fan bearing performance Special test machine obtain.
But, fan bearing producer domestic at present can apply the big comprehensive experiments equipment of axial moment, radial moment, upsetting moment and moment of friction simultaneously to large size bearing owing to lacking, therefore the Special test machine meeting above-mentioned fan bearing performance requirement cannot be obtained, this causes domestic fan bearing enterprise cannot complete full test to fan bearing performance, to the data reserve wretched insufficiency of the important parameter of produced large fan bearing products, the Special test standard or industry, enterprise's examination criteria that are applicable to large fan bearing even cannot be formed.
Therefore, research and develop a kind of large-scale wind driven generator special bearing testing table that can meet large-scale wind driven generator special bearing performance test and durability test, the technical development for China's fan bearing has great importance.
Summary of the invention
In order to solve the big comprehensive experiments equipment not having at present to apply axial moment, radial moment, upsetting moment and moment of friction to large size bearing simultaneously, lack the technical matters for making the Special test machine of comprehensive detection to the test of the bearing performance of large fan bearing and durability test, the invention provides a kind of 3.6 meters of large fan bearing test-beds.
The technical scheme that technical solution problem of the present invention is taked is as follows:
3.6 meters of large fan bearing test-beds, it comprises axial pressure portion, radial pressurization part, staring torque oil cylinder, two guide rails, pedestal, grounds, leads into winch, involves winch, support, bearing seat, lower flange and multiple driving device for hydraulic motor; Axial pressure portion comprises the pressure foot be made up of pressurization beam and transition seat, two upsetting moment oil cylinders, two axial force oil cylinders, four twisted seats, four axial pressure twisted seats and three web joints; Pressurization beam and transition seat are bolted, and transition seat is connected with upper flange by bolt; Pressurization beam comprises long-armed beam and the galianconism beam of decussation layout, is connected respectively, is connected respectively below the two ends of galianconism beam by two twisted seats with two axial force oil cylinders below the two ends of long-armed beam by two twisted seats with two upsetting moment oil cylinders; The lower end of two upsetting moment oil cylinders is connected with ground by two axial pressure twisted seats and two web joints, and the lower end of two axial force oil cylinders is connected with ground by two axial pressure twisted seats and web joint; Two supports lay respectively at outside the two ends of long-armed beam, each support are respectively equipped with backing plate, backing plate oil cylinder and oil cylinder locking clip; One end of oil cylinder locking clip and the stage casing axle of support connect, its other end and upsetting moment oil cylinder active link; The upper surface of backing plate and support is slidably connected, and backing plate oil cylinder is fixed on outside the top of support, and the piston rod of backing plate oil cylinder and the end face outside of backing plate are connected; The lower surface of each support is connected with ground by bolt; Radial pressurization part comprises two radial pressurization bearings, two radial pressurization oil cylinders and two radial pressurization oil cylinders, radial pressurization bearing is positioned at the below of galianconism beam, radial pressurization bearing is positioned at the below of long-armed beam, one end and the radial bearing that pressurizes of two radial pressurization oil cylinders are connected, and the other end is connected with the lateral wall of transition seat; One end and the radial bearing that pressurizes of two radial pressurization oil cylinders are connected, and the other end is connected with the lateral wall of transition seat; Staring torque oil cylinder is arranged on the side of radial pressurization bearing, and staring torque oil cylinder is connected by the external diameter of stay cord with bearing seat that pulling force sensor is housed; Pedestal is arranged on guide rail, and guide rail is placed on ground by multiple cushion block, or guide rail is connected with concrete foundation slide by rolling body; Lead winch and involve winch and be all connected on ground; Lower flange is fixed on above pedestal, and bearing seat surrounds in the bearing installation cavity of formation in upper flange and lower flange jointly, and multiple driving device for hydraulic motor is distributed on the madial wall of pedestal by identical angle of circumference.
The invention has the beneficial effects as follows: these 3.6 meters of large fan bearing test-beds, there is axial moment, radial moment, upsetting moment, the compound loading of moment of friction and starting friction moment and measuring ability, this device carries out speed change test to large-scale wind driven generator special bearing under also possessing the state loaded at bimoment simultaneously, the comprehensive detection function of variable load test and break-in test, it can meet large-scale wind driven generator special bearing completely to bearing performance test and the comprehensive detection demand of durability test, the technical development of China's fan bearing is had great importance.
Accompanying drawing explanation
Fig. 1 is the front-view schematic diagram of the present invention's 3.6 meters of large fan bearing test-beds;
Fig. 2 is the schematic top plan view of the present invention's 3.6 meters of large fan bearing test-beds;
Fig. 3 is that schematic diagram is looked on the right side of the present invention's 3.6 meters of large fan bearing test-beds;
Fig. 4 is the schematic perspective view of medium-height trestle of the present invention;
Fig. 5 is the perspective view after the present invention's 3.6 meters of large fan bearing test-beds remove ground.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Figures 1 to 5,3.6 meters of large fan bearing test-beds of the present invention comprise axial pressure portion, radial pressurization part, staring torque oil cylinder 11, two guide rails 38, pedestal 19, ground 20, lead into winch 10, involve winch 4, support 1, bearing seat 17, lower flange 18 and multiple driving device for hydraulic motor 16.Each driving device for hydraulic motor 16 comprises oil motor, reducer gear gearing and torque sensor; The JMDE2-150BD31R type oil motor that driving device for hydraulic motor 16 selects Ningbo Zhongyi Hydraulic Motor Co., Ltd. to produce.
Axial pressure portion comprises pressure foot, two upsetting moment oil cylinders, 2, two axial force oil cylinders, 5, four twisted seats 27,28,29,30 of being made up of pressurization beam 6 and transition seat 25, four axial pressure twisted seats, 31,32,33,34 and three web joints 35,36,37; Pressurization beam 6 and transition seat 25 are bolted, and transition seat 25 is connected with upper flange 13 by bolt; Pressurization beam 6 comprises long-armed beam and the galianconism beam of decussation layout, be connected with two upsetting moment oil cylinders 2 respectively by two twisted seats 27,28 below the two ends of long-armed beam, be connected with two axial force oil cylinders 5 respectively by two twisted seats 29,30 below the two ends of galianconism beam; The lower end of two upsetting moment oil cylinders 2 is connected with ground 20 by two axial pressure twisted seats, 31,32 and two web joints 35,36, and the lower end of two axial force oil cylinders 5 is connected with ground 20 by two axial pressure twisted seats 33,34 and web joint 37; Two supports 1 lay respectively at outside the two ends of long-armed beam, each support 1 are respectively equipped with backing plate 7, backing plate oil cylinder 8 and oil cylinder locking clip 9; One end of oil cylinder locking clip 9 and the stage casing axle of support 1 connect, its other end and upsetting moment oil cylinder 2 active link; Backing plate 7 is slidably connected with the upper surface of support 1, and backing plate oil cylinder 8 is fixed on outside the top of support 1, and the piston rod of backing plate oil cylinder 8 and the end face outside of backing plate 7 are connected.The lower surface of support 1 is connected with ground 20 by bolt.
Radial pressurization part comprises two radial pressurization bearing 21,24, two radial direction pressurization oil cylinders 3 and two radial pressurization oil cylinders 12, radial pressurization bearing 21 is positioned at the below of galianconism beam, radial pressurization bearing 24 is positioned at the below of long-armed beam, one end and the radial bearing 24 that pressurizes of two radial pressurization oil cylinders 3 are connected, and the other end is connected with the lateral wall of transition seat 25; One end and the radial bearing 21 that pressurizes of two radial pressurization oil cylinders 12 are connected, and the other end is connected with the lateral wall of transition seat 25; The lower surface of two radial pressurization bearings 21,24 is all connected with ground 20; Staring torque oil cylinder 11 is arranged on the side of radial pressurization bearing 21, and staring torque oil cylinder 11 is connected by the external diameter 22 of stay cord 41 with bearing seat 17 that pulling force sensor is housed.
Pedestal 19 is arranged on guide rail 38, and guide rail 38 is placed on ground 20 by multiple cushion block 39, or guide rail 38 is slidably connected by rolling body 40 and ground 20; Lead winch 10 and involve winch 4 and be all connected on ground 20.
Lower flange 18 is fixed on above pedestal 19, and bearing seat 17 is positioned at the bearing installation cavity that upper flange 13 and lower flange 18 surround formation jointly, and multiple driving device for hydraulic motor 16 is distributed on the madial wall of pedestal 19 by identical angle of circumference.Upper flange 13, lower flange 18 and bearing seat 17 and 12 driving device for hydraulic motor 16 composition bearing jig frock jointly.
During embody rule 3.6 meters of large fan bearing test-beds of the present invention, select the bearing jig frock of corresponding internal diameter according to bearing outside diameter to be tested.Then, two identical bearings to be tested are coaxially fixed on respectively the upper/lower terminal of bearing seat 17, and fix with upper flange 13 and lower flange 18 respectively; Make each driving device for hydraulic motor 16 all be engaged with bearing outside diameter to be tested by one group of corresponding reduction gear device respectively, then the bearing jig frock lifting with two test bearing is fallen into the top of pedestal 19.
Stretch with two upsetting moment oil cylinders 2 and lift pressure foot, pressurization beam 6 is made to drive transition seat 25 to be separated with upper flange 13, when the two ends of the long-armed beam of the beam 6 that pressurizes exceed the height of backing plate 7, start two backing plate oil cylinders 8 respectively and the backing plate 7 of correspondence pushed to the below of long-armed beam, then shorten two upsetting moment oil cylinders 2 and the two ends of the long-armed beam of pressurization beam 6 are supported on two supports 1 respectively.
All screws for pedestal 19 and ground 20 are connected under dismounting, and below two guide rails 38, extract all cushion blocks 39 respectively out make pedestal 19 drop on rolling body 40, then, starting leads into winch 10, pedestal 19 is together dragged together with bearing jig frock along guide rail 38 by the wirerope 26 be connected with pedestal 19, until they are by the test station jointly drawn to pressure foot, after this, two radial pressurization oil cylinders 3 are made all to be connected with the lateral wall of transition seat 25 with the piston end of two radial pressurization oil cylinders 12.
Start two backing plate oil cylinders 8 respectively and regain corresponding backing plate 7, two upsetting moment oil cylinders 2 are made to shrink and fall pressure foot, until transition seat 25 and upper flange 13 fasten, the external diameter of staring torque oil cylinder 11 with bearing seat 17 is connected by the stay cord 41 again by being equipped with pulling force sensor, finally, discharge the upsetting moment oil cylinder 2 of two each Self-fastenings of oil cylinder locking clip 9 respectively, namely complete the loading procedure of tested bearing.
When utilizing 3.6 meters of large fan bearing test-beds of the present invention to carry out bearing performance test or durability test to fan bearing to be tested, test bearing and the tested bearing each other of two bearings in bearing jig frock, multiple driving device for hydraulic motor 16 drives tested bearing rotary jointly, bearing rotating speed continuously adjustabe within the scope of 0.8 ~ 30rpm.Torque sensor is equipped with in the reductor inside of driving device for hydraulic motor 16, in order to detect moment of friction.
Two axial force oil cylinders 5 shorten simultaneously, and the axle pressure that its pressure load is formed is applied in two test bearing in bearing jig frock through pressurization beam 6, transition seat 25 and upper flange 13 in turn; 2 one elongations of two upsetting moment oil cylinders, another shortens, and the upsetting moment that they are formed jointly is applied in two test bearing in bearing jig frock along the path same with axial force oil cylinder 5.Its maximum radial load capability: Fr=5600KN of large fan bearing test-bed of the present invention, maximum axial load capability: Fa=5000KN; Upsetting moment: Fr=25000KNm.
The stay cord 41 that pulling force sensor is housed does not apply two kinds of situations of pressure load or pressure foot applying pressure load respectively in pressure foot by two test bearing that its pulling force sensor detects in bearing jig frock respectively, the each self-corresponding starting friction moment of test bearing group, starting friction moment size equals the radius that stay cord 41 upper pulling force measurement value sensor is multiplied by bearing holder (housing, cover) 17.
Two radial pressurization oil cylinders 3 or two radial pressurization oil cylinders 12 can produce the resultant radial force of 5600kn, and be arranged vertically both it, the size of making a concerted effort and direction decide the position of the center of effort of shaft strength.
Due to the operating characteristic that oil motor not easily burns because of overload, when certain driving device for hydraulic motor 16 occurs with the nonsynchronous situation of overall rotating speed separately, this driving device for hydraulic motor 16 both can not be damaged, also load or the burden of overall drive system can not be become, compare and traditional electro-motor, multiple fluid motor-driven system of the present invention has obvious advantage on this device.
After having tested, again axial pressure portion is risen, and unload each force load device respectively, then by with involve the wirerope 26 that winch 4 is connected and along guide rail 38, pedestal 19 together dragged together with bearing jig frock, until they are by the maintenance position of jointly drawing to guide rail 38 far-end, pedestal 19 is connected again in ground 20, can starts to change test bearing or maintenance.
Can upgrade become supermatic intelligent blower bearing test-bed by increasing auxiliary data acquisition system (DAS) and rotating speed, control pressurer system in large fan bearing test-bed of the present invention.In addition, the detection such as infrared temperature sensor and vibration-measuring sensor and FEEDBACK CONTROL can also be increased, process of the test parameter is by computing machine complete monitoring, the intelligent blower bearing test-bed of the robotization after upgrading is made to have automatic loading, thermometric, vibration measuring and test the speed and automatic data collection signal, automatic display function.Axial pressure portion, radial pressurization part and driving device for hydraulic motor with the use of, can jointly complete the speed change of large-scale wind driven generator special bearing is tested, variable load test and break-in test comprehensive detection function.
3.6 meters of large fan bearing test-beds of the present invention are for the technological innovation of promotion fan bearing, the market cultivation and industrialized development significant, it can become slurry, driftage bearing tester as research and development large-scale wind electricity, strengthen the performance to fan bearing, durability test thus, study its unfailing performance, greasy property, sealing property and load-bearing capacity, form large fan bearing Special test standard and basic database, form own test, examination criteria specification, in order to the whole process instructing the production of fan bearing, research and development and innovate again.
3.6 meters of large fan bearing test-beds, there is compound loading and the measuring ability of axial moment, radial moment, upsetting moment, moment of friction and starting friction moment, simultaneously this device also possess bimoment load state under to large-scale wind driven generator special bearing is carried out speed change test, variable load test and break-in test comprehensive detection function, it can meet large-scale wind driven generator special bearing completely to bearing performance test and the comprehensive detection demand of durability test, has great importance to the technical development of China's fan bearing.
Claims (1)
1.3.6 rice large fan bearing test-bed, it is characterized in that, this testing table comprises axial pressure portion, radial pressurization part, staring torque oil cylinder (11), two guide rails (38), pedestal (19), grounds (20), leads into winch (10), involves winch (4), support (1), bearing seat (17), lower flange (18) and multiple driving device for hydraulic motor (16);
Axial pressure portion comprises the pressure foot be made up of pressurization beam (6) and transition seat (25), two upsetting moment oil cylinders (2), two axial force oil cylinders (5), four twisted seats (27,28,29,30), four axial pressure twisted seats (31,32,33,34) and three web joints (35,36,37); Pressurization beam (6) and transition seat (25) are bolted, and transition seat (25) is connected with upper flange (13) by bolt; Pressurization beam (6) comprises long-armed beam and the galianconism beam of decussation layout, be connected with two upsetting moment oil cylinders (2) respectively by two twisted seats (27,28) below the two ends of long-armed beam, be connected with two axial force oil cylinders (5) respectively by two twisted seats (29,30) below the two ends of galianconism beam; The lower end of two upsetting moment oil cylinders (2) is connected with ground (20) by two axial pressure twisted seats (31,32) and two web joints (35,36), and the lower end of two axial force oil cylinders (5) is connected with ground (20) by two axial pressure twisted seats (33,34) and web joint (37); Two supports (1) lay respectively at outside the two ends of long-armed beam, each support (1) are respectively equipped with backing plate (7), backing plate oil cylinder (8) and oil cylinder locking clip (9); One end of oil cylinder locking clip (9) and the stage casing axle of support (1) connect, its other end and upsetting moment oil cylinder (2) active link; Backing plate (7) is slidably connected with the upper surface of support (1), backing plate oil cylinder (8) is fixed on outside the top of support (1), and the piston rod of backing plate oil cylinder (8) and the end face outside of backing plate (7) are connected; The lower surface of each support (1) is connected with ground (20) by bolt;
Radial pressurization part comprises two radial pressurizations bearing (21,24), two radial pressurizations oil cylinder (3) and two radial pressurizations oil cylinder (12), radial pressurization bearing (21) is positioned at the below of galianconism beam, radial pressurization bearing (24) is positioned at the below of long-armed beam, one end and the radial bearing (24) that pressurizes of two radial pressurizations oil cylinder (3) are connected, and the other end is connected with the lateral wall of transition seat (25); One end and the radial bearing (21) that pressurizes of two radial pressurizations oil cylinder (12) are connected, and the other end is connected with the lateral wall of transition seat (25); Staring torque oil cylinder (11) is arranged on the side of radial pressurization bearing (21), and staring torque oil cylinder (11) is connected by the external diameter (22) of stay cord (41) with bearing seat that pulling force sensor is housed;
Pedestal (19) is arranged on guide rail (38), guide rail (38) is placed on ground (20) by multiple cushion block (39), or guide rail (38) is slidably connected by rolling body (40) and ground (20); Leading winch (10) and involving winch (4) is all connected on ground (20);
Lower flange (18) is fixed on pedestal (19) top, bearing seat (17) is positioned at the bearing installation cavity that upper flange (13) and lower flange (18) surround formation jointly, and multiple driving device for hydraulic motor (16) is distributed on the madial wall of pedestal (19) by identical angle of circumference.
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| CN201410840452.0A CN104568439B (en) | 2014-12-30 | 2014-12-30 | 3.6 meters of large fan bearing test-beds |
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| CN201410840452.0A CN104568439B (en) | 2014-12-30 | 2014-12-30 | 3.6 meters of large fan bearing test-beds |
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| CN104568439A true CN104568439A (en) | 2015-04-29 |
| CN104568439B CN104568439B (en) | 2017-07-11 |
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| CN104568439B (en) | 2017-07-11 |
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Effective date of registration: 20210127 Address after: 116300 Zhuhua Industrial Park, Wafangdian City, Dalian City, Liaoning Province Patentee after: Wafangdian City bearing group wind power Bearing Co.,Ltd. Address before: 116300 Dalian, Liaoning Wafangdian City City, north section of a common section 1. Patentee before: WAFANGDIAN BEARING GROUP Co.,Ltd. |
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