CN202886082U - Eccentric vibration exciter for fatigue test of large-size wind powder blade - Google Patents
Eccentric vibration exciter for fatigue test of large-size wind powder blade Download PDFInfo
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- CN202886082U CN202886082U CN 201220619013 CN201220619013U CN202886082U CN 202886082 U CN202886082 U CN 202886082U CN 201220619013 CN201220619013 CN 201220619013 CN 201220619013 U CN201220619013 U CN 201220619013U CN 202886082 U CN202886082 U CN 202886082U
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Abstract
The utility model relates to an eccentric vibration exciter for a fatigue test of a large-size wind powder blade, and belongs to the technical field of wind power equipment. The eccentric vibration exciter provided by the utility model uses the technical scheme: the eccentric vibration exciter for the fatigue test of the large-size wind powder blade comprises a variable frequency speed reducer (1), an adjustable stand assembly (2), a water-drop-shaped eccentric runner assembly (3), constant-length screw rods (4), an upper clamp holder (5), an upper glass steel profile-followed protection board (6), a blade profile-followed cavity (7), a lower glass steel profile-followed protection board (8) and a bottom indicated-weight truss assembly (9), wherein the lower glass steel profile-followed protection board (8) and the bottom indicated-weight truss assembly (9) are adhered to form an assembly; the upper clamp holder (5) and the upper glass steel profile-followed protection board (6) are adhered to form an assembly; the four constant-length screw rods (4) are arranged; the two assemblies are connected through the four constant-length screw rods (4) to form the blade profile-followed cavity (7); the adjustable stand assembly (2) is welded on the upper clamp holder (5); the variable frequency speed reducer (1) is mounted on the adjustable stand assembly (2); and the water-drop-shaped eccentric runner assembly (3) is fixedly arranged on an output shaft of the variable frequency speed reducer (1). The eccentric vibration exciter provided by the utility model has the beneficial effects that the design pertinence on a structure and a function is strong; a vibration direction of the blade is accurate without a counter weight; and the eccentric vibration exciter has the advantages of high strength, light weight, simple mounting, balance of a rotation speed, high operation security, and long service life.
Description
Technical field
The utility model relates to a kind of large-scale wind electricity blade fatigue test eccentric activator, belongs to the wind power technology equipment technical field.
Background technology
In day by day fierce market competition, life of product and reliability become the focus that people more and more pay close attention to.Aerogenerator is between the whole operating period, blade is subject to the combined effect of various external environments and wind load: fitful wind, turbulent flow, pneumatic shear, skew wind, driftage, starting brake, gravity and inertial force, ice and snow load etc., determinacy load and random load are wherein arranged, the blade loading more complicated.Therefore one of pith of vane design of wind turbines is Fatigue Strength Analysis.Permanance and integrity problem are ubiquities, are one of wind electricity blade product most important factor of lacking competitiveness.Therefore for again design, again innovation, be necessary to carry out wind electricity blade torture test test.
Therefore, torture test is fan blade important test experiments in design, typing, production run.By the actual 20 years operation life processes of test simulation blade, can the test fan blade safe operation work.Expose the tired weak part of blade by test, Local Cracking may occur, local deformation is that unstability, blade abnormal sound etc. are unusual.Note abnormalities by test, be to improve design, technique manufacturing, establishment working service and illustrate, determine that blade provides test figure serviceable life.At present, Fatigue Vibration equipment mainly contains two types, electromechanical vibration and hydraulic vibration both at home and abroad.Relatively the market competition of wind-powered electricity generation industry cruelty by suiting measures to local conditions and realistic design concept, selects only to drop into the eccentricity excitation torture test mode of low-cost expense, is the at present main selection of blade producer both at home and abroad.Select eccentricity excitation torture test mode, have testing expenses low, adapt to rugged surroundings, plant maintenance is convenient, the advantages such as handling safety.And it is high to adopt the hydraulic vibration mode to have a cost, requires the test site condition harsh, and failure rate is high, the unfavorable factors such as consumable accessory expense height.And present eccentricity excitation torture test mode need to be carried out counterweight in advance, and operation is comparatively complicated.
The utility model content
The utility model purpose provides a kind of large-scale wind electricity blade fatigue test eccentric activator, produce Centrifugal vibration by adopting eccentric wheel set assembly to rotate, thereby make blade produce fatigue vibration test, do not need counterweight can make the blade vibration directivity accurate, solve the problems referred to above that exist in the background technology.
The technical solution of the utility model is: a kind of large-scale wind electricity blade fatigue test eccentric activator, comprise the frequency conversion speed-down machine, the adjustable machine holder assembly, the eccentric wheel set assembly of dripping water type, the fixed length screw rod, upper holder assembly, upper glass steel conformal backplate, blade conformal chamber, lower-glass steel conformal backplate and bottom indicated weight component truss, described lower-glass steel conformal backplate and bottom indicated weight component truss are by bonding formation assembly, upper holder assembly and upper glass steel conformal backplate are by bonding formation assembly, the fixed length screw rod has four, be connected to each other formation blade conformal chamber by the fixed length screw rod between two assemblies, the adjustable machine holder assembly is arranged on the upper holder assembly by welding, the frequency conversion speed-down machine is installed on the adjustable machine holder assembly, and the eccentric wheel set assembly of dripping water type is fixedly installed on the output shaft of frequency conversion speed-down machine.
Described adjustable machine holder assembly comprises frequency conversion speed-down machine base platform and diagonal brace platform support, and described diagonal brace platform support has four, is arranged on the left side of frequency conversion speed-down machine base platform, with frequency conversion speed-down machine base platform by being welded to connect.
Described bottom indicated weight component truss is truss ship type project organization.
The eccentric wheel set assembly of described dripping water type comprises turning handle and round turntable, and described turning handle is up-small and down-big dripping water type project organization, is provided with two macropores, and round turntable has six, and each is provided with an eccentric macropore.
The beneficial effects of the utility model are: the structure function design is with strong points, does not need counterweight can make the blade vibration directivity accurate, and intensity is high, lightweight, and installation is simple, rotating speed is balanced, safety in operation is high, long service life.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 is upward view of the present utility model;
Fig. 3 is left view of the present utility model;
Fig. 4 is right view of the present utility model;
Among the figure: frequency conversion speed-down machine 1, adjustable machine holder assembly 2, the eccentric wheel set assembly 3 of dripping water type, fixed length screw rod 4, upper holder assembly 5, upper glass steel conformal backplate 6, blade conformal chamber 7, lower-glass steel conformal backplate 8, bottom indicated weight component truss 9.
Embodiment
Below in conjunction with accompanying drawing, by embodiment the utility model is described further.
A kind of large-scale wind electricity blade fatigue test eccentric activator, comprise frequency conversion speed-down machine 1, adjustable machine holder assembly 2, the eccentric wheel set assembly 3 of dripping water type, fixed length screw rod 4, upper holder assembly 5, upper glass steel conformal backplate 6, blade conformal chamber 7, lower-glass steel conformal backplate 8 and bottom indicated weight component truss 9, described lower-glass steel conformal backplate 8 and bottom indicated weight component truss 9 are by bonding formation assembly, upper holder assembly 5 and upper glass steel conformal backplate 6 are by bonding formation assembly, fixed length screw rod 4 has four, be connected to each other formation blade conformal chamber 7 by fixed length screw rod 4 between two assemblies, adjustable machine holder assembly 2 is arranged on the upper holder assembly 5 by welding, frequency conversion speed-down machine 1 is installed on the adjustable machine holder assembly 2, and the eccentric wheel set assembly 3 of dripping water type is fixedly installed on the output shaft of frequency conversion speed-down machine 1.During installation, lift this equipment, fiberglass conformal backplate suit is clipped on the wind electricity blade about making, and lifting is tightened four fixed length screw rods and got final product.During test, power by experiment indoor frequency-variable controller and cable transfer makes the eccentric wheel set assembly uniform rotation of dripping water type produce Centrifugal vibration to the frequency conversion speed-down machine of eccentric activator, produces Fatigue Vibration thereby drive wind electricity blade.
Comprise frequency conversion speed-down machine base platform and diagonal brace platform support referring to accompanying drawing 1 and accompanying drawing 3 described adjustable machine holder assemblies 2, described diagonal brace platform support has four, be arranged on the left side of frequency conversion speed-down machine base platform, with frequency conversion speed-down machine base platform by being welded to connect.This design makes the frequency conversion speed-down machine that stable installation effect be arranged when vibration.
Referring to accompanying drawing 1 and accompanying drawing 2, described bottom indicated weight component truss 9 is truss ship type project organizations, has the characteristics of intensity height and anti-deformation.
Referring to accompanying drawing 1 and accompanying drawing 4, the eccentric wheel set assembly 3 of described dripping water type comprises turning handle and round turntable, described turning handle is up-small and down-big dripping water type project organization, be provided with two macropores, round turntable has six, each is provided with an eccentric macropore, and these designs all are for outstanding eccentric design concept, make the eccentricity excitation maximization.
Claims (4)
1. large-scale wind electricity blade fatigue test eccentric activator, it is characterized in that: comprise frequency conversion speed-down machine (1), adjustable machine holder assembly (2), the eccentric wheel set assembly (3) of dripping water type, fixed length screw rod (4), upper holder assembly (5), upper glass steel conformal backplate (6), blade conformal chamber (7), lower-glass steel conformal backplate (8) and bottom indicated weight component truss (9), described lower-glass steel conformal backplate (8) and bottom indicated weight component truss (9) are by bonding formation assembly, upper holder assembly (5) and upper glass steel conformal backplate (6) are by bonding formation assembly, fixed length screw rod (4) has four, be connected to each other formation blade conformal chamber (7) by fixed length screw rod (4) between two assemblies, adjustable machine holder assembly (2) is arranged on the upper holder assembly (5) by welding, frequency conversion speed-down machine (1) is installed on the adjustable machine holder assembly (2), and the eccentric wheel set assembly of dripping water type (3) is fixedly installed on the output shaft of frequency conversion speed-down machine (1).
2. a kind of large-scale wind electricity blade fatigue test eccentric activator as claimed in claim 1, it is characterized in that: described adjustable machine holder assembly (2) comprises frequency conversion speed-down machine base platform and diagonal brace platform support, described diagonal brace platform support has four, be arranged on the left side of frequency conversion speed-down machine base platform, with frequency conversion speed-down machine base platform by being welded to connect.
3. a kind of large-scale wind electricity blade fatigue test eccentric activator as claimed in claim 1, it is characterized in that: described bottom indicated weight component truss (9) is truss ship type project organization.
4. a kind of large-scale wind electricity blade fatigue test eccentric activator as claimed in claim 1, it is characterized in that: the eccentric wheel set assembly of described dripping water type (3) comprises turning handle and round turntable, described turning handle is up-small and down-big dripping water type project organization, be provided with two macropores, round turntable has six, and each is provided with an eccentric macropore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220619013 CN202886082U (en) | 2012-11-21 | 2012-11-21 | Eccentric vibration exciter for fatigue test of large-size wind powder blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220619013 CN202886082U (en) | 2012-11-21 | 2012-11-21 | Eccentric vibration exciter for fatigue test of large-size wind powder blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202886082U true CN202886082U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220619013 Expired - Fee Related CN202886082U (en) | 2012-11-21 | 2012-11-21 | Eccentric vibration exciter for fatigue test of large-size wind powder blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202886082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091684A (en) * | 2017-04-24 | 2017-08-25 | 北京航空航天大学 | A kind of device for obtaining vibration phase under blade controllable vibration form |
| CN109185244A (en) * | 2018-11-12 | 2019-01-11 | 兰州理工大学 | Hydraulic system matched with wind electricity blade biaxial fatigue test platform |
-
2012
- 2012-11-21 CN CN 201220619013 patent/CN202886082U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091684A (en) * | 2017-04-24 | 2017-08-25 | 北京航空航天大学 | A kind of device for obtaining vibration phase under blade controllable vibration form |
| CN107091684B (en) * | 2017-04-24 | 2020-02-21 | 北京航空航天大学 | Device for obtaining vibration phase of blade in controllable vibration mode |
| CN109185244A (en) * | 2018-11-12 | 2019-01-11 | 兰州理工大学 | Hydraulic system matched with wind electricity blade biaxial fatigue test platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131121 |