CN218180263U - Fan wheel hub internal part load test device - Google Patents
Fan wheel hub internal part load test device Download PDFInfo
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- CN218180263U CN218180263U CN202221628778.3U CN202221628778U CN218180263U CN 218180263 U CN218180263 U CN 218180263U CN 202221628778 U CN202221628778 U CN 202221628778U CN 218180263 U CN218180263 U CN 218180263U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a fan wheel hub inner member load test device, including supporting base, stable truss, revolution long arm and rotation frame, it is subaerial to support the base to be fixed in, stable truss locates the top of supporting the base, and its bottom is fixed in and supports the base subaerially all around, revolution long arm rotates and locates and support between base and the stable truss, rotation frame has two, installs respectively in the both ends of revolution long arm, it is formed with a plurality of installation positions that are used for installing the test part to rotate in the frame. The utility model discloses a rotatory centrifugal acceleration that produces of revolution long arm to this simulation wheel hub's acceleration of gravity, and through setting up different rotational speeds, produce different acceleration of centrifugal force, simulate the acceleration of gravity load under the different conditions, produce the change of gravity load direction and size when simultaneously simulating wheel hub rotation through the rotation of revolving rack rotation, thereby realize limit load test and the fatigue load test to the wheel hub inner part.
Description
Technical Field
The utility model belongs to the technical field of the technique of aerogenerator test and specifically relates to indicate a fan wheel hub inner member load test device.
Background
The fan hub is connected with the blades and the transmission chain, and the function of transferring energy is achieved. Various components such as a variable pitch drive control cabinet, a power supply cabinet, a lubricating system and the like are arranged in the fan hub. Because the hub rotates ceaselessly, the direction and the magnitude of the gravity load borne by each component can periodically fluctuate in 360-degree rotation. The parts inside the hub include many mechanical parts such as socket fasteners, and electronic and electrical parts such as circuit boards, capacitors, resistors, inductors, and the like, which are required to stably operate under a rotational load varying in direction and magnitude over a long period of time, and have high requirements for reliability.
For strength reliability test of parts of general components, a vibration test bed is generally adopted for testing, but the vibration test bed has the condition that the failure mechanism of a test environment is inconsistent with that of an actual operation environment. A general vibration test bed can only simulate vertical acceleration at high frequency, weak links are found out in a mode that high-frequency amplitude direction changes greatly, and actually, the direction change of the acceleration in a hub is 360-degree low-frequency cyclic change. Because the hub of the fan is large and the rotating speed is slow and is generally within 12rpm at present, the part is taken as a reference system, and the main low-frequency load borne by the inner part of the hub is the gravity acceleration load with the direction changing constantly.
In order to be more suitable for the actual working condition of acceleration change in the hub and more accurately find out the weak link of the hub, a testing device which is closer to the actual running working condition and adjustable in working condition is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provide a fan wheel hub internal part load test device, through the rotatory centrifugal acceleration that produces of revolution long arm, with this simulation wheel hub's acceleration of gravity, and through setting up different rotational speeds, produce different acceleration of centrifugal force, simulate the acceleration of gravity load under the different conditions, produce the change of gravity load direction and size when simulating the wheel hub rotation through the self-rotation frame rotation simultaneously, thereby realize limit load test and the fatigue load test to the wheel hub internal part, determine its weak position of intensity, and improve.
In order to achieve the above object, the present invention provides a technical solution: the utility model provides a fan wheel hub internal part load test device, is including supporting base, stable truss, revolution long arm, revolving rack, main drive, vice drive arrangement and test part, it is subaerial to support the base to be fixed in, stable truss locates the top of supporting the base, and its bottom is fixed in and supports the base subaerial all around, revolution long arm rotates and locates and support between base and the stable truss, is driven revolution long arm by main drive arrangement and rotates around its rotation axis to produce centrifugal acceleration, with this acceleration of gravity of simulation wheel hub, revolving rack has two, installs respectively in the both ends of revolution long arm, be formed with a plurality of installation positions that are used for installing test part in the revolving rack, two revolving racks are by vice drive rotation, and one of them revolving rack is clockwise rotation, and another revolving rack is anticlockwise rotation, thereby the acceleration load of 360 degrees direction constantly changing.
Further, the revolution long arm comprises a steel structure body and two cantilevers connected to two sides of the steel structure body, the cantilevers are of a truss structure, a rotating shaft is fixedly connected to the center of the top of the steel structure body, and a key groove is fixedly connected to the center of the bottom of the steel structure body.
Further, the main driving device is installed on the supporting base and comprises a first variable frequency motor and a planetary gear box, the first variable frequency motor is connected with the planetary gear box, and the planetary gear box is connected with the revolution long arm through a spline.
Further, the auxiliary driving device comprises a second variable frequency motor, a double-output transmission case, two transmission shafts and two angle transmission cases, wherein the second variable frequency motor is connected with the double-output transmission case, is installed at the center of the revolution long arm and can synchronously rotate along with the revolution long arm, the double-output transmission case is connected with the two angle transmission cases through the two transmission shafts, the two angle transmission cases are respectively installed on the top surfaces of the two rotation frames, and the angle transmission cases drive the corresponding rotation frames to rotate.
Furthermore, the secondary driving device supplies power through a power supply slip ring, the power supply slip ring comprises a plurality of conductive loops and a plurality of spring brushes, the conductive loops are arranged on the periphery of the rotating shaft of the revolution long arm and are arranged at intervals along the axial direction of the rotating shaft, the conductive loops are connected with the secondary driving device, the number of the spring brushes is consistent with that of the conductive loops and corresponds to that of the conductive loops one by one, the spring brushes are fixed on the stable truss, and each spring brush is in contact with the corresponding conductive loop.
Furthermore, the support base comprises a first bearing seat and a thrust roller bearing, a race of the thrust roller bearing is fixed in the first bearing seat, and a shaft ring of the thrust roller bearing is connected with the revolution long arm.
Furthermore, stabilize the truss and include gyration bearing structure and a plurality of fixed truss, gyration bearing structure locates the top of revolution long arm to be connected with the rotation axis rotation at revolution long arm top, it includes second bearing frame and slewing bearing, slewing bearing cooperation is installed on the second bearing frame, slewing bearing rotates with the rotation axis of revolution long arm to be connected, a plurality of fixed truss equipartitions are around the second bearing frame, and a plurality of fixed truss one end and the global fixed connection of second bearing frame, and the other end supports on subaerial.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
1. compare traditional test device, the utility model discloses a test device more presses close to operating condition, accords with actual conditions simulation fan wheel hub inner part gravity acceleration load that receives more.
2. The utility model discloses a test device can carry out complete experiment to a plurality of test parts simultaneously, and efficiency of software testing is high, the test result is accurate, dependable performance.
3. The utility model discloses a testing device size is big, compatible strong, can test the part in the most fan wheel hub.
Drawings
Fig. 1 is a schematic view of the overall structure of the testing apparatus of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the testing apparatus of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a front view of the testing device of the present invention.
Fig. 5 is a partially enlarged view of B in fig. 4.
Fig. 6 is a cross-sectional view of the testing device of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, but the present invention is not limited thereto.
As shown in fig. 1 to 6, the fan hub internal component load testing apparatus according to this embodiment includes a supporting base 1, a stable truss 2, a long revolving arm 3, a rotating frame 4, a main driving device 5, a secondary driving device 6, and a testing component 7, where the supporting base 1 is fixed on the ground, the stable truss 2 is disposed above the supporting base 1, and the bottom of the stable truss is fixed on the ground around the supporting base 1, the long revolving arm 3 is rotatably disposed between the supporting base 1 and the stable truss 2, and the main driving device 5 drives the long revolving arm 3 to rotate around its rotation axis 303, so as to generate centrifugal acceleration, thereby simulating the gravitational acceleration of the hub, two rotating frames 4 are respectively mounted at two ends of the long revolving arm 3, a plurality of mounting positions for mounting the testing component 7 are formed in the rotating frame 4, the testing component 7 is a fan hub internal component to be tested, such as a single control box, a power cabinet, a lubrication system, and the like, each testing component 7 is fixed on the corresponding mounting position through a connecting plate, the two rotating frames 4 are driven by the secondary driving device 6, each rotating frame 4 can continuously rotate around its central axis, and one rotating frame 4 is a clockwise, and one rotating frame 4 is used for simulating the load change in a counterclockwise direction, and the rotating direction of the rotating frame 4, and the other rotating frame 4 is used for simulating the acceleration change of 360 degrees.
Revolution long arm 3 includes steel construction main part 301 and connects two cantilevers 302 in steel construction main part 301 both sides, and cantilever 302 is the truss structure, guarantees intensity and reduces weight simultaneously to reduce test device's drive power, steel construction main part 301's top center department fixedly connected with rotation axis 303, its bottom center department fixedly connected with keyway (not shown in the figure), it is rotatory with different rotational speeds through setting up revolution long arm 3, and then produce different centrifugal acceleration.
The main driving device 5 is arranged on the supporting base 1 and comprises a first variable frequency motor and a planetary gear box, wherein the first variable frequency motor is connected with the planetary gear box, and the planetary gear box is connected with the revolution long arm through a spline and a key groove.
The secondary driving device 6 comprises a second variable frequency motor 601, a double-output transmission case 602, two transmission shafts 603 and two angle transmission cases 604, the second variable frequency motor 601 is connected with the double-output transmission case 602 and is installed at the center of the revolution long arm 3 to rotate synchronously with the revolution long arm 3, two sides of the double-output transmission case 602 are connected with the two angle transmission cases 604 through the two transmission shafts 603, the two angle transmission cases 604 are respectively installed on the top surfaces of the two rotation frames 4, and the angle transmission cases 604 drive the corresponding rotation frames 4 to rotate.
The secondary driving device 6 is powered by a power supply slip ring 8, the power supply slip ring 8 includes a plurality of conductive loops 801 and a plurality of spring brushes 802, in this embodiment, 3 conductive loops 801 are taken as an example, 3 conductive loops 801 are disposed on the periphery of the rotating shaft 303 and are arranged at intervals in the axial direction of the rotating shaft 303, the 3 conductive loops 801 are connected to the second inverter motor 601, the 3 spring brushes 802 correspond to the 3 conductive loops 801 one by one, the 3 spring brushes 802 are fixed on the stable truss 2, and each spring brush 802 contacts with the corresponding conductive loop 801. The electric energy is transmitted to the conductive loop by supplying power to the spring electric brush, and then transmitted to the second variable frequency motor through the conductive loop, so that the auxiliary driving device in rotation is supplied with power.
The support base 1 plays a role of supporting the revolution long arm to rotate, and comprises a first bearing seat 101 and a thrust roller bearing 102, wherein a race of the thrust roller bearing 102 is fixed in the first bearing seat 101, and a shaft ring of the thrust roller bearing is connected with the revolution long arm 3.
The stable truss 2 comprises a rotary supporting structure and a plurality of fixed trusses 201, the rotary supporting structure is arranged above the revolution long arm 3 and is rotatably connected with a rotating shaft 303, the rotary supporting structure comprises a second bearing seat 202 and a rotary bearing 203, the rotary bearing 203 is installed on the second bearing seat 202 in a matched mode, the rotary bearing 203 is rotatably connected with the rotating shaft 303, the fixed trusses 201 are uniformly distributed on the periphery of the second bearing seat 202, one ends of the fixed trusses 201 are fixedly connected with the peripheral surface of the second bearing seat 202, the other ends of the fixed trusses are supported on the ground, the rigidity of the whole testing device is increased through the stable truss 2, and the revolution long arm can keep stable rotation.
During testing, the first variable frequency motor of the main driving device is electrified and started and gradually accelerated to a set rotating speed, and the high rotating speed and low torque are transmitted to be low rotating speed and high torque through the planetary gear box, so that the revolution long arm is driven to reach a stable rotating speed, and finally a specific gravity load is simulated.
The auxiliary driving device obtains electric energy through the conductive slip ring, a second variable frequency motor inputs torque to the double-output gear box, the two angle transmission boxes are driven through the two transmission shafts, the two angle transmission boxes drive the corresponding self-rotating frames to gradually rotate to a set rotating speed, and finally specific acceleration direction changes are simulated.
According to the formula of centripetal acceleration:
a＝(2×π×rps)^2×R
wherein a is centripetal acceleration with the unit of m/s ^2; rps is the rotational speed in revolutions per second; r is the radius of rotation, and the unit is m;
when the centripetal acceleration is one time of gravity acceleration, a1=9.8m/s ^2;
the radius R1 from the supporting points at the two ends of the revolving long arm to the center in the embodiment is =3.5m,
the rotating speed is calculated according to a centripetal acceleration formula as follows:
(9.8/3.5) ^0.5 ÷ (2 x pi) =0.2663 revolutions per second
If ten times of gravity acceleration is needed, the rotating speed is calculated according to a centripetal acceleration formula as follows:
(98/3.5) ^0.5 ÷ (2 x pi) =0.8421 revolutions per second
Therefore, the utility model discloses a test device requires lowly to the rotational speed, and the operation degree of difficulty is low.
The self-turret radius of rotation R2=0.75m in this embodiment,
the rotating speed of the hub of the general fan is within 0.2 revolution per second, and the rotating speed of the self-rotating frame is reached, so that the change frequency of the gravity acceleration direction of the hub can be simulated.
In order to accelerate the testing speed, the rotating speed of the self-rotating frame is increased, so that the change frequency of the direction of the acceleration is accelerated, the upper range and the lower range of the fluctuating load are enlarged, and the fault is easier to be excited.
When the rotating speed of the revolution long arm is set to be 0.2663 revolutions per second and the rotating speed of the rotation frame is set to be 0.2 revolutions per second, the load condition borne by a test part when the normal fan hub rotates can be simulated.
When the rotating speed of the revolution long arm is set to be 0.8421 revolutions per second and the rotating speed of the rotation frame is set to be 0.2 revolutions per second, the load condition of the test part under the extreme loading condition can be simulated.
When the rotating speed of the revolution long arm is set to be 0.8421 revolutions per second and the rotating speed of the rotation frame is set to be 0.4 revolutions per second, the load condition of a test part under the conditions of extreme loading and high accelerated change stress can be simulated.
In a word, the utility model discloses a test device can be according to experimental demand, in the design range, carries out different parameter tests. In addition, in the test process, the conditions of the test parts can be recorded in the modes of video recording, strain foil pasting, various sensors installation and the like.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a fan wheel hub internals load test device which characterized in that: the device comprises a supporting base, a stable truss, two revolution long arms, a rotation frame, a main driving device, an auxiliary driving device and a test part, wherein the supporting base is fixed on the ground, the stable truss is arranged above the supporting base, the bottom of the stable truss is fixed on the ground around the supporting base, the revolution long arms are rotatably arranged between the supporting base and the stable truss, the main driving device drives the revolution long arms to rotate around a rotating shaft of the revolution long arms, so that centrifugal acceleration is generated, the centrifugal acceleration of a hub is simulated, the rotation frames are provided with two rotation frames which are respectively arranged at two ends of the revolution long arms, a plurality of installation positions for installing the test part are formed in the rotation frame, the two rotation frames are driven by the auxiliary driving device, one rotation frame rotates clockwise, the other rotation frame rotates anticlockwise, and acceleration load changing in the 360-degree direction is simulated.
2. The fan hub internal component load test device of claim 1, wherein: the revolution long arm comprises a steel structure body and two cantilevers connected to two sides of the steel structure body, the cantilevers are of a truss structure, a rotating shaft is fixedly connected to the center of the top of the steel structure body, and a key groove is fixedly connected to the center of the bottom of the steel structure body.
3. The fan hub internal component load test device of claim 1, wherein: the main driving device is arranged on the supporting base and comprises a first variable frequency motor and a planetary gear box, the first variable frequency motor is connected with the planetary gear box, and the planetary gear box is connected with the revolution long arm through a spline.
4. The fan hub internal part load test device of claim 1, wherein: the auxiliary driving device comprises a second variable frequency motor, a double-output transmission case, two transmission shafts and two angle transmission cases, the second variable frequency motor is connected with the double-output transmission case and is installed at the center of the revolution long arm and can synchronously rotate along with the revolution long arm, the double-output transmission case is connected with the two angle transmission cases through the two transmission shafts, the two angle transmission cases are respectively installed on the top surfaces of the two rotation frames, and the angle transmission cases drive the corresponding rotation frames to rotate.
5. The fan hub internal part load test device of claim 1 or 4, wherein: the auxiliary driving device is powered through a power supply slip ring, the power supply slip ring comprises a plurality of conductive loops and a plurality of spring brushes, the conductive loops are arranged on the periphery of a rotating shaft of the revolution long arm and are arranged at intervals along the axial direction of the rotating shaft, the conductive loops are connected with the auxiliary driving device, the number of the spring brushes is consistent with that of the conductive loops and corresponds to that of the conductive loops one by one, the spring brushes are fixed on the stable truss, and each spring brush is in contact with the corresponding conductive loop.
6. The fan hub internal component load test device of claim 1, wherein: the supporting base comprises a first bearing seat and a thrust roller bearing, a race of the thrust roller bearing is fixed in the first bearing seat, and a shaft ring of the thrust roller bearing is connected with the revolution long arm.
7. The fan hub internal part load test device of claim 1, wherein: the stable truss comprises a rotary supporting structure and a plurality of fixed trusses, wherein the rotary supporting structure is arranged above the revolution long arm and is connected with a rotating shaft at the top of the revolution long arm in a rotating mode, the rotary supporting structure comprises a second bearing seat and a rotary bearing, the rotary bearing is installed on the second bearing seat in a matching mode, the rotary bearing is connected with the rotating shaft of the revolution long arm in a rotating mode, the fixed trusses are evenly distributed on the periphery of the second bearing seat, one ends of the fixed trusses are fixedly connected with the periphery of the second bearing seat, and the other ends of the fixed trusses are supported on the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221628778.3U CN218180263U (en) | 2022-06-28 | 2022-06-28 | Fan wheel hub internal part load test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221628778.3U CN218180263U (en) | 2022-06-28 | 2022-06-28 | Fan wheel hub internal part load test device |
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| Publication Number | Publication Date |
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| CN218180263U true CN218180263U (en) | 2022-12-30 |
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| CN202221628778.3U Active CN218180263U (en) | 2022-06-28 | 2022-06-28 | Fan wheel hub internal part load test device |
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- 2022-06-28 CN CN202221628778.3U patent/CN218180263U/en active Active
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