CN106840928B - Wind electricity blade fatigue loading experimental rig - Google Patents
Wind electricity blade fatigue loading experimental rig Download PDFInfo
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- CN106840928B CN106840928B CN201710254998.1A CN201710254998A CN106840928B CN 106840928 B CN106840928 B CN 106840928B CN 201710254998 A CN201710254998 A CN 201710254998A CN 106840928 B CN106840928 B CN 106840928B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
Abstract
The present invention provides a kind of wind electricity blade fatigue loading experimental rig, and a kind of clump weight distribution method is provided for the device, servo motor is mounted on body, screw rod passes through the output axis connection of shaft coupling and servo motor, guard box equipped with clump weight is fastenedly connected with sliding block, it is characterized by: the cabinet front-rear side walls center of sliding block is equipped with the circular hole that diameter does not wait, screw is mounted in the circular hole being relatively large in diameter, directive wheel I and directive wheel II are installed at left and right sides of cabinet on wall by pin shaft III and pin shaft IV respectively, sliding block is by nut sleeve on lead screw, directive wheel I and directive wheel II and guide rail contact provide guide support for sliding block, fatigue loading device transmission uses hollow ball-screw, 1 quality for assembling pouring weight is distributed by the Geometric Sequence that common ratio is 2.Testing reliability of the present invention is high and is convenient for clamping, and installation clump weight can simply, conveniently, be accurately adjusted under the premise of meeting counterweight requirements, uses manpower and material resources sparingly.
Description
Technical field
The present invention provides a kind of wind electricity blade fatigue loading experimental rig, is mainly used for the testing fatigue of wind electricity blade.
Background technique
The major function of wind electricity blade fatigue loading experimental rig is to carry out fatigue loading test to wind electricity blade.Currently,
The fatigue loading experimental rig of use mainly has eccentric massblock fatigue loading experimental rig, the test of hydraulic inertia fatigue loading
Device and electrical servo fatigue loading experimental rig.Wherein, eccentric massblock fatigue loading experimental rig uses more, eccentric matter
Gauge block fatigue loading experimental rig structure is simple, installation is easy, but there was only vertical component in eccentric massblock rotary course
Useful work is done, capacity usage ratio is low；Hydraulic inertia fatigue loading experimental rig needs a set of complicated electrohydraulic servo system
Control, the system requirements is high, energy consumption is high, low efficiency, and since the device is related to many hydraulic members such as pump, valve, cylinder, accumulator
Part, the fatigue life of these elements itself will affect the reliability of blade fatigue load test；The test of electrical servo fatigue loading
Device is used as power source using servo motor, carries out fatigue loading test to wind electricity blade, this loading device control system is opposite
Simply, high reliablity is loaded, capacity usage ratio is high, meet the trend of Green Development, but traditional electrical servo fatigue loading
Experimental rig assembly process process is poor, and the lead screw service life is low and clump weight adjusts difficulty.
Summary of the invention
It is an object of the invention to above-mentioned electrical servo fatigue loading experimental rig there are aiming at the problem that, a kind of survey is provided
Try high reliablity and be convenient for clamping wind electricity blade fatigue loading experimental rig, and for the device provide it is a kind of installation simply, group
Conjunction is convenient, adjusts easy clump weight distribution method.
Its technical solution are as follows: the experimental rig is formed by identical 2 sets, and when test uses in pairs.1 set of packet therein
Include body, servo motor, lead screw, shaft coupling, guard box and sliding block.Body includes pillar, crossbeam I, crossbeam II and guide rail, length
Equal, 2 pillars made of square tube are in the same plane, and one end crossbeam I made of square tube is fixedly connected, and crossbeam I
Length is equal to the distance between 2 pillar lateral surfaces after connection, and other end crossbeam II made of square tube is fixedly connected, crossbeam II
Both ends after stretching out 2 pillar lateral surfaces are equipped with axis perpendicular to the through-hole of plane where 2 pillars, and 2 pin shafts I pass through logical
Extension end behind hole is fastened by nut I, and side plate of the both ends after the 2 pillar lateral surfaces of stretching of crossbeam II close to I side of crossbeam is equal
Cut with notch, 2 sections are that the guide rail of the strip of rectangle is separately mounted on the medial surface between 2 pillars, and with 2 branch
Plane where column is parallel, and the upper and lower surfaces parallel with plane where 2 pillars are equipped with square at the center of crossbeam II along its length
Shape through-hole, 2 sides vertical with plane where 2 pillars are equipped with the axis cylindrical hole parallel with pillar, servo motor
It after output shaft is inserted into the cylindrical hole at II middle part of crossbeam, is mounted on side of the crossbeam II far from crossbeam I, is arranged in 2 pillars
Intermediate and parallel with pillar axis lead screw one end passes through the output axis connection of shaft coupling and servo motor.Guard box includes peace
Loading board, side plate it is different with width 1 assemble pouring weight, in being respectively equipped with rank in the middle part of the mounting plate both ends alongst of rectangle
Trapezoidal cylinder hole, 2 mounting plates are parallel, arrange to positive, and the major diameter of stairstepping cylindrical hole is outwardly, two sides alongst
Face respectively by being fixedly connected in 2 side plates of rectangle, 2 length be equal between 2 mounting plate lateral surfaces of guard box distance with
The pin shaft II both ends of the difference of 2 times of depth of stepped hole major diameter on mounting plate are respectively charged into the path hole of mounting plate upper shoulder hole
It is interior, the gear that thickness is equal to mounting plate upper shoulder hole major diameter depth is separately installed in 2 major diameter holes of mounting plate upper shoulder hole
Plate, the length more than one piece clump weight equal with the long side of mounting plate are separately fixed on the lateral surface of 2 mounting plates.Sliding block includes case
Body, cover board, directive wheel I, directive wheel II, support and one end are equipped with the screw cylindrical of the larger diameter shaft shoulder, and cabinet is in nothing
The rectangular box structure of bottom uncovered, 2 cover boards are separately mounted to the opening of cabinet, the length of cabinet be equal to installation board width,
Width is highly greater than strut thickness and the opening of cabinet is separately installed with cover board less than the distance between 2 post inboard faces
Total height afterwards is equal to distance between 2 mounting plate medial surfaces of guard box, the cabinet left and right sides parallel with cabinet length direction
On wall along short transverse be symmetrically arranged with 2 rows, the multiple axis of every row perpendicular to wall box circular hole, and 2 row's round hole axials it
Between distance be equal to guide rail perpendicular to the sum of the width of plane where 2 pillars and I diameter of directive wheel, one end is equipped with directive wheel I
Multiple pin shaft IIIs set the threaded other end and pass through the extension end after side wall circular hole on the outside of the cabinet and be fixed with nut II, cabinet
2 row's circular holes in left and right sidewall are symmetrically located, and multiple rectangular openings are equipped with, and middle part is equipped with the pin shaft IV of directive wheel II, and both ends pass through
Support is installed at left and right sides of cabinet on inner wall, and IV axis of pin shaft is parallel with the short transverse of cabinet, each directive wheel II respectively with
Rectangle hole site at left and right sides of cabinet on inner wall is corresponding, and each directive wheel II is each passed through the square at left and right sides of cabinet on wall
Behind shape hole and it is mounted on the inside face contact of medial surface upper rail between 2 pillars, before cabinet is vertical with cabinet length direction
The circular hole that diameter does not wait is equipped at rear wall center, biggish Circularhole diameter is equal to the outside diameter of screw, and lesser circular hole is straight
Diameter is 5-10mm bigger than lead screw outer diameter, and one end that screw is equipped with the shaft shoulder is located at the case that servo motor side is arranged close on the outside of cabinet
In macropore on body.Side of the sliding block equipped with screw after assembling is mounted on lead screw towards servo motor by nut sleeve, and silk
Thick stick is placed through the aperture on cabinet front and rear wall, and the mounting plate of guard box is separately fixed on the outside of 2 cover boards of sliding block, and along
The length direction alignment of sliding block, width direction bilateral symmetry, 2 both ends of the spring are hung in pin shaft I and pin shaft II.
The wind electricity blade fatigue loading experimental rig, clump weight be 1 group, including clump weight 1, clump weight 2 ..., match
Pouring weightN, and clump weight 1, clump weight 2 ..., clump weightNQuality distributed by the Geometric Sequence that common ratio is 2, wherein clump weight 1
Quality are as follows:
⑴
The type sum of clump weightNAre as follows:
⑵
Wherein,m 1For the quality of clump weight 1；nFor tested blade styles sum；NIt is total for clump weight type,NWith truncating
Method rounding is natural number； i、jRespectively indicateiWithjKind blade；SFor sliding block best amplitude；A i 、A j RespectivelyiWithjKind
The amplitude of blade load(ing) point；k i 、k j RespectivelyiWithjThe rigidity of kind blade load(ing) point；ξ i 、ξ j RespectivelyiWithjKind leaf
The damping ratio of piece；ω i 、ω j RespectivelyiWithjThe fatigue loading angular speed of kind blade.
The wind electricity blade fatigue loading experimental rig, lead screw use hollow ball-screw.
The wind electricity blade fatigue loading experimental rig, lead screw use hollow normal spiral lead screw.
The wind electricity blade fatigue loading experimental rig, lead screw use solid ball-screw.
The wind electricity blade fatigue loading experimental rig, lead screw use solid normal spiral lead screw.
On the basis of existing technology, equal length, 2 pillars made of square tube are in the same plane the present invention,
One end crossbeam I made of square tube is fixedly connected, and I length of crossbeam is equal to the distance between 2 pillar lateral surfaces after connection, separately
One end crossbeam II made of square tube is fixedly connected, and it is vertical that the both ends after the 2 pillar lateral surfaces of stretching of crossbeam II are equipped with axis
The through-hole of plane where 2 pillars, extension end of 2 pin shafts I after through-hole are fastened by nut I, and crossbeam II stretches out 2 branch
Side plate of the both ends close to I side of crossbeam after column lateral surface cuts with notch；2 sections are the guide rail difference of the strip of rectangle
It is mounted on the medial surface between 2 pillars, and parallel with plane where 2 pillars；At the center of crossbeam II along its length
The upper and lower surfaces parallel with plane where 2 pillars are equipped with rectangular through-hole, and 2 sides vertical with plane where 2 pillars are set
The cylindrical hole for having axis parallel with pillar is mounted on after the output shaft of servo motor is inserted into the cylindrical hole at II middle part of crossbeam
On side of the crossbeam II far from crossbeam I；Lead screw one end that among 2 pillars and axis is parallel with pillar is set and passes through shaft coupling
The output axis connection of device and servo motor.Guard box is in be respectively equipped with rank in the middle part of the both ends of the mounting plate of rectangle alongst
Trapezoidal cylinder hole, 2 mounting plates are parallel, arrange to positive, and the major diameter of stairstepping cylindrical hole is outwardly, two sides alongst
Face respectively by being fixedly connected in 2 side plates of rectangle, 2 length be equal between 2 mounting plate lateral surfaces of guard box distance with
The pin shaft II both ends of the difference of 2 times of depth of stepped hole major diameter on mounting plate are respectively charged into the path hole of mounting plate upper shoulder hole
It is interior, the gear that thickness is equal to mounting plate upper shoulder hole major diameter depth is separately installed in 2 major diameter holes of mounting plate upper shoulder hole
Plate, the length more than one piece clump weight equal with the long side of mounting plate are separately fixed on the lateral surface of 2 mounting plates.Sliding block is in circle
Cylindrical screw one end is equipped with the larger diameter shaft shoulder, and cabinet is in the rectangular box structure of bottomless uncovered, and 2 cover boards are separately mounted to
The opening of cabinet, the length of cabinet are equal to installation board width, width less than the distance between 2 post inboard faces, and height is big
2 mounting plate medial surfaces that the total height after cover board is equal to guard box are separately installed in the opening of strut thickness and cabinet
Between distance, be symmetrically arranged with 22 rows, every row axis along short transverse in the cabinet left and right sidewall parallel with cabinet length direction
Line is perpendicular to the circular hole of wall box, and the distance between 2 row's round hole axials are equal to guide rail perpendicular to plane where 2 pillars
The sum of width and I diameter of directive wheel, one end set the threaded other end equipped with 8 pin shaft IIIs of directive wheel I and wear from cabinet outside
Extension end after crossing side wall circular hole is fixed with nut II；2 row's circular holes in cabinet left and right sidewall are symmetrically located, and 2 rectangles are equipped with
Hole, middle part are equipped with the pin shaft IV of directive wheel II, and both ends are installed at left and right sides of cabinet on inner wall by support, IV axis of pin shaft and
The short transverse of cabinet is parallel, and each directive wheel II is corresponding with the rectangle hole site on inner wall at left and right sides of cabinet respectively, and each
Directive wheel II is each passed through after the rectangular opening at left and right sides of cabinet on wall and is mounted on the interior of medial surface upper rail between 2 pillars
Side contact；The circular hole that diameter does not wait, biggish circular hole are equipped at the cabinet front-rear side walls center vertical with cabinet length direction
Diameter is equal to the outside diameter of screw, and lesser Circularhole diameter is 5-10mm bigger than lead screw outer diameter, and screw is equipped with one end position of the shaft shoulder
In the macropore on cabinet for being arranged close to servo motor side on the outside of cabinet.Sliding block after assembling is equipped with the side court of screw
Servo motor by nut sleeve on the lead screw, and lead screw is placed through the aperture on cabinet front and rear wall, the installation of guard box
Plate is separately fixed on the outside of 2 cover boards of sliding block, and along the alignment of the length direction of sliding block, width direction bilateral symmetry, 2 bullets
Spring both ends are hung in pin shaft I and pin shaft II.
The clump weight of wind electricity blade fatigue loading experimental rig be 1 group, clump weight 1, clump weight 2 ..., clump weightNMatter
Amount is distributed by the Geometric Sequence that common ratio is 2, wherein the quality of clump weight 1 are as follows:
⑴
The type sum of clump weightNAre as follows:
⑵
When carrying out fatigue test to wind electricity blade, 2 sets of wind electricity blade fatigue loading experimental rigs are symmetrically mounted on blade
Above and below, installation direction is consistent with blade vibration direction for fixture.Then, by blade, blade holder and wind electricity blade fatigue
Load testing machine as a whole, is fixed on cylindrical base by the pre-embedded bolt of root of blade.With sinusoidal velocity
Motor rotation is controlled, and then passes through hollow ball-screw or hollow normal spiral lead screw or solid ball-screw or solid general
Logical screw band movable slider makees sine reciprocating motion in predetermined stroke, and generation exciting force carries out fatigue to wind electricity blade and adds
It carries.
The present invention is compared with prior art: using double wheel designs between sliding block and guide rail, when reducing slide block movement
Resistance, improve testing reliability, reduce the requirement to clamping process, reduce manufacturing cost；Clump weight is by muti-piece
Composition, and clump weight quality is allocated by common ratio, can be under the premise of guaranteeing to meet counterweight requirements, combining form is more
Sample, installation is simple, easy to adjust；Ball-screw uses hollow form, improves the heat dissipation performance of ball-screw, and then improve
The service life of ball-screw.
Detailed description of the invention
Fig. 1 is that the wind electricity blade fatigue loading of the embodiment of the present invention tests scheme of installation.
Fig. 2 is 1 set of wind electricity blade fatigue loading experimental rig axonometric drawing of embodiment illustrated in fig. 1.
Fig. 3 is the sliding block axonometric drawing of embodiment illustrated in fig. 1.
Specific embodiment
1, servo motor 2, lead screw 3, shaft coupling 4, pillar 5, crossbeam I 6, crossbeam II 7, guide rail 8, pin shaft I 9, spiral shell
Mother I 10, mounting plate 11, side plate 12, clump weight 13, pin shaft II 14, baffle 15, spring 16, cabinet 17, cover board 18,
Directive wheel I 19, directive wheel II 20, support 21, screw 22, pin shaft III 23, nut II 24, pin shaft IV.
In Fig. 1-embodiment shown in Fig. 3: on the basis of existing technology, equal length is made the present invention of square tube
2 pillars 4 be in the same plane, one end crossbeam I 5 made of square tube is fixedly connected, and I 5 length of crossbeam be equal to connection
The distance between 24 lateral surfaces of pillar afterwards, other end crossbeam II 6 made of square tube are fixedly connected, and crossbeam II 6 stretches out 2 branch
Both ends after 4 lateral surface of column are equipped with axis perpendicular to the through-hole of 24 place planes of pillar, after 2 pin shafts I 8 pass through through-hole
Extension end is fastened by nut I 9, and side plate of the both ends after 24 lateral surfaces of pillar of stretching of crossbeam II 6 close to I 5 side of crossbeam is cut
It is jagged；2 sections are that the guide rail 7 of the strip of rectangle is separately mounted on the medial surface between 2 pillars 4, and with 2 branch
4 place plane of column is parallel；It is set at the center of crossbeam II 6 along its length with 2 parallel upper and lower surfaces of 4 place plane of pillar
There is rectangular through-hole, 2 sides vertical with 24 place planes of pillar are equipped with the axis cylindrical hole parallel with pillar 4, servo
After the cylindrical hole at II 6 middle part of output shaft insertion crossbeam of motor 1, it is mounted on side of the crossbeam II 6 far from crossbeam I 5；Setting
Among 2 pillars 4 and 2 one end of lead screw that axis is parallel with pillar 4 is connected by the output shaft of shaft coupling 3 and servo motor 1
It connects.Guard box is in be respectively equipped with stairstepping cylindrical hole, 2 mounting plates in the middle part of the both ends of the mounting plate 10 of rectangle alongst
10 arrange in parallel, to positive, and the major diameter of stairstepping cylindrical hole is outwardly, and two sides alongst are respectively by rectangle
2 side plates 11 are fixedly connected, and 2 length are equal to the rank between 2 10 lateral surfaces of mounting plate of guard box in distance and mounting plate 10
13 both ends of pin shaft II of the difference of terraced 2 times of depth of hole major diameter are respectively charged into the path hole of 10 upper shoulder hole of mounting plate, mounting plate
The baffle 14 that thickness is equal to 10 upper shoulder hole major diameter depth of mounting plate is separately installed in 2 major diameter holes of 10 upper shoulder holes,
The length more than one piece clump weight 12 equal with the long side of mounting plate 10 is separately fixed on the lateral surface of 2 mounting plates 10.Sliding block
21 one end of screw cylindrical is equipped with the larger diameter shaft shoulder, and cabinet 16 is in the rectangular box structure of bottomless uncovered, 2 cover boards 17
It is separately mounted to the opening of cabinet 16, the length of cabinet 16 is equal to less than 2 10 width of mounting plate, width 4 medial surfaces of pillar
The distance between, the opening for being highly greater than 4 thickness of pillar and cabinet 16, which is separately installed with the total height after cover board 17 and is equal to, protects
Distance between 2 10 medial surfaces of mounting plate of protecting box, along height in the left and right sidewall parallel with 16 length direction of cabinet of cabinet 16
Degree direction is symmetrically arranged with the circular hole of 22 rows, every row axis perpendicular to 16 side wall of cabinet, and the distance between 2 row's round hole axials etc.
In guide rail 7 perpendicular to the sum of width of 24 place planes of pillar and I 18 diameter of directive wheel, one end is equipped with 8 of directive wheel I 18
Pin shaft III 22 sets extension end of the threaded other end on the outside of cabinet 16 after side wall circular hole and is fixed with nut II 23；Cabinet
2 row's circular holes in 16 left and right sidewalls are symmetrically located, and 2 rectangular openings are equipped with, and middle part is equipped with the pin shaft IV 24 of directive wheel II 19, both ends
It is installed on 16 left and right sides inner wall of cabinet by support 20, IV 24 axis of pin shaft is parallel with the short transverse of cabinet 16, respectively leads
It is corresponding with the rectangle hole site on 16 left and right sides inner wall of cabinet respectively to wheel II 19, and each directive wheel II 19 is each passed through case
After rectangular opening on 16 left and right sides wall of body and it is mounted on the inside face contact of medial surface upper rail 7 between 2 pillars 4；Cabinet
The circular hole that diameter does not wait is equipped at the 16 front-rear side walls centers vertical with 16 length direction of cabinet, biggish Circularhole diameter is equal to silk
The outside diameter of mother 21, lesser Circularhole diameter is 5-10mm bigger than 2 outer diameter of lead screw, and one end that screw 21 is equipped with the shaft shoulder is located at cabinet
16 outsides are arranged close in the macropore on the cabinet 16 of 1 side of servo motor.Sliding block after assembling is equipped with the side of screw 21
It is sleeved on lead screw 2 towards servo motor 1 by screw 21, and lead screw 2 is placed through the aperture on 16 front and rear wall of cabinet, protection
The mounting plate 10 of case is separately fixed at 2 cover boards, 17 outside of sliding block, and left along the alignment of the length direction of sliding block, width direction
Right symmetrical, 2 15 both ends of spring are hung on pin shaft I 8 and pin shaft II 13.
The clump weight 12 of wind electricity blade fatigue loading experimental rig is 1 group, and the quality of various clump weights 12 is 2 by common ratio
Geometric Sequence distribution, wherein the quality of the 1st piece of clump weight 12 are as follows:
⑴
The type sum of clump weight 12NAre as follows:
⑵
When carrying out fatigue test to wind electricity blade, 2 sets of wind electricity blade fatigue loading experimental rigs are symmetrically mounted on blade
Above and below, installation direction is consistent with blade vibration direction for fixture.Then, by blade, blade holder and wind electricity blade fatigue
Load testing machine as a whole, is fixed on cylindrical base by the pre-embedded bolt of root of blade.With sinusoidal velocity
It controls servo motor 1 to rotate, and then sinusoidal reciprocating motion is made with movable slider in predetermined stroke by hollow ball-screw 2, produce
Raw exciting force carries out fatigue loading to wind electricity blade.
It is assumed that tested blade styles sumn=6, sliding block best amplitudeS=0.3m, then the load(ing) point amplitude of various bladesAPlus
Loading point rigidityk, blade damping ratioξWith load angular speedωIt is as shown in the table:
| Parameter | n=1 | n=2 | n=3 | n=4 | n=5 | n=6 |
| AmplitudeA /m | 0.20 | 0.24 | 0.30 | 0.32 | 0.38 | 0.40 |
| Rigidityk /N·m-1 | 155000 | 175000 | 205000 | 215000 | 250000 | 265000 |
| Damping ratioξ | 0.0250 | 0.0258 | 0.0266 | 0.0270 | 0.0275 | 0.0280 |
| Angular speedω /rad·s-1 | 2.00π | 1.80π | 1.50π | 1.40π | π | 0.96π |
Parameter in table is brought into formula (1) to obtain:m 1=23.758kg, willm 1(2) and parameter brings formula into tableN=4, counterweight
Block 12 is 2 by common ratio, and first term ism 1Geometric Sequence distribution, thereforem 2=47.516 kg,m 3=95.032 kg,m 4=190.064
kg。
Claims (6)
1. a kind of wind electricity blade fatigue loading experimental rig, which is formed by identical 2 sets, and when test makes in pairs
With 1 set therein includes that body, servo motor (1), lead screw (2), shaft coupling (3), guard box and sliding block, body include pillar
(4), crossbeam I (5), crossbeam II (6) and guide rail (7), equal length, 2 pillars (4) made of square tube are generally aligned in the same plane
Interior, one end crossbeam I (5) made of square tube is fixedly connected, and crossbeam I (5) length is equal to 2 pillar (4) lateral surfaces after connection
The distance between, other end crossbeam II (6) made of square tube is fixedly connected, and crossbeam II (6) stretches out 2 pillar (4) lateral surfaces
Both ends afterwards are equipped with axis perpendicular to the through-hole of plane where 2 pillars (4), and 2 pin shafts I (8) pass through the stretching after through-hole
End is fastened by nut I (9), side plate of the both ends after crossbeam II (6) 2 pillar (4) lateral surfaces of stretching close to crossbeam I (5) side
Notch is cut with, 2 sections are that the guide rail (7) of the strip of rectangle is separately mounted on the medial surface between 2 pillars (4),
And it is parallel with plane where 2 pillars (4), it is flat with plane where 2 pillars (4) at the center of crossbeam II (6) along its length
Capable upper and lower surfaces are equipped with rectangular through-hole, and 2 sides vertical with plane where 2 pillars (4) are equipped with axis and pillar (4)
Parallel cylindrical hole is mounted on crossbeam II after the output shaft of servo motor (1) is inserted into the cylindrical hole in the middle part of crossbeam II (6)
(6) on the side far from crossbeam I (5), it is arranged in lead screw (2) one end that 2 pillars (4) are intermediate and axis is parallel with pillar (4)
By the output axis connection of shaft coupling (3) and servo motor (1), guard box include mounting plate (10), side plate (11) and width not
With 1 assemble pouring weight (12), in being respectively equipped with stairstepping cylinder in the middle part of mounting plate (10) both ends alongst of rectangle
Hole, 2 mounting plates (10) are parallel, arrange to positive, and the major diameter of stairstepping cylindrical hole is outwardly, two sides point alongst
Not by being fixedly connected in 2 side plates (11) of rectangle, 2 length are equal to the spacing of 2 mounting plate (10) lateral surfaces of guard box
From and mounting plate (10) on pin shaft II (13) both ends of difference of 2 times of depth of stepped hole major diameter be respectively charged into rank on mounting plate (10)
In the path hole in terraced hole, thickness is separately installed in 2 major diameter holes of mounting plate (10) upper shoulder hole equal to mounting plate
(10) baffle (14) of upper shoulder hole major diameter depth, the length more than one piece clump weight (12) equal with the long side of mounting plate (10) is respectively
It is fixed on the lateral surface of 2 mounting plates (10), it is characterised in that: sliding block includes cabinet (16), cover board (17), directive wheel I
(18), directive wheel II (19), support (20) and one end are equipped with the screw (21) cylindrical of the larger diameter shaft shoulder, cabinet (16)
In the rectangular box structure of bottomless uncovered, 2 cover boards (17) are separately mounted to the opening of cabinet (16), the length of cabinet (16)
Equal to the distance between mounting plate (10) width, less than 2 pillar (4) medial surfaces of width, highly be greater than pillar (4) thickness and
The opening of cabinet (16) be separately installed with the total height after cover board (17) be equal to guard box 2 mounting plate (10) medial surfaces it
Between distance, be symmetrically arranged with 2 rows, every row along short transverse in cabinet (16) left and right sidewall parallel with cabinet (16) length direction
Multiple axis perpendicular to cabinet (16) side wall circular hole, and the distance between 2 row's round hole axials be equal to guide rail (7) perpendicular to 2
The sum of the width and directive wheel I (18) diameter of plane where pillar (4), one end is equipped with multiple pin shaft IIIs of directive wheel I (18)
(22) it sets extension end of the threaded other end on the outside of cabinet (16) after side wall circular hole and is fixed with nut II (23), cabinet
(16) 2 row's circular holes in left and right sidewall are symmetrically located, and are equipped with multiple rectangular openings, and middle part is equipped with the pin shaft IV of directive wheel II (19)
(24), both ends are installed at left and right sides of cabinet (16) on inner wall by support (20), pin shaft IV (24) axis and cabinet (16)
Short transverse is parallel, and each directive wheel II (19) is corresponding with the rectangle hole site on inner wall at left and right sides of cabinet (16) respectively, and
In each directive wheel II (19) is each passed through after the rectangular opening at left and right sides of cabinet (16) on wall and is mounted between 2 pillars (4)
The inside face contact of side upper rail (7), cabinet (16) are equipped at the front-rear side walls center vertical with cabinet (16) length direction
Equal circular hole, biggish Circularhole diameter are not equal to the outside diameter of screw (21) to diameter, and lesser Circularhole diameter is outside than lead screw (2)
The big 5-10mm of diameter, one end that screw (21) is equipped with the shaft shoulder, which is located on the outside of cabinet (16), is arranged close to servo motor (1) side
In macropore on cabinet (16), side of the sliding block equipped with screw (21) after assembling passes through screw (21) towards servo motor (1)
It is sleeved on lead screw (2), and lead screw (2) is placed through the aperture on cabinet (16) front and rear wall, the mounting plate (10) point of guard box
It is not fixed on the outside of 2 cover boards (17) of sliding block, and along the alignment of the length direction of sliding block, width direction bilateral symmetry, 2 bullets
Spring (15) both ends are hung on pin shaft I (8) and pin shaft II (13).
2. wind electricity blade fatigue loading experimental rig as described in claim 1, it is characterised in that: clump weight (12) is 1 group, packet
Include clump weight (12) 1, clump weight (12) 2 ..., clump weight (12)N, and clump weight (12) 1, clump weight (12) 2 ..., clump weight
(12)NQuality distributed by the Geometric Sequence that common ratio is 2, the wherein quality of clump weight (12) 1 are as follows:
⑴
The type sum of clump weight (12)NAre as follows:
⑵
Wherein,m 1For the quality of clump weight (12) 1；nFor tested blade styles sum；NIt is total for clump weight (12) type,NIt spends
Tail method rounding is natural number； i、jRespectively indicateiWithjKind blade；SFor sliding block best amplitude；A i 、A j RespectivelyiWithj
The amplitude of kind blade load(ing) point；k i 、k j RespectivelyiWithjThe rigidity of kind blade load(ing) point；ξ i 、ξ j RespectivelyiWithjKind
The damping ratio of blade；ω i 、ω j RespectivelyiWithjThe fatigue loading angular speed of kind blade.
3. wind electricity blade fatigue loading experimental rig as described in claim 1, it is characterised in that: lead screw (2) uses hollow rolling
Ballscrew.
4. wind electricity blade fatigue loading experimental rig as described in claim 1, it is characterised in that: lead screw (2) is using hollow general
Logical screw.
5. wind electricity blade fatigue loading experimental rig as described in claim 1, it is characterised in that: lead screw (2) uses solid rolling
Ballscrew.
6. wind electricity blade fatigue loading experimental rig as described in claim 1, it is characterised in that: lead screw (2) is using solid general
Logical screw.
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| CN108918592B (en) * | 2018-04-25 | 2023-10-03 | 国网湖北省电力有限公司经济技术研究院 | Modular measurement device for lightning-proof grounding material of power system and application method |
| CN109283075A (en) * | 2018-11-07 | 2019-01-29 | 连云港中复连众复合材料集团有限公司 | The wind electricity blade fatigue test exciting device and test method of servo motor driving |
| CN109813548A (en) * | 2019-03-26 | 2019-05-28 | 成都天马精密机械有限公司 | A kind of pitch variable bearings test machine |
| CN110057518B (en) * | 2019-05-21 | 2021-03-19 | 山东理工大学 | Loading method and device for wind power blade trailing edge component |
| CN110849568B (en) * | 2019-12-24 | 2021-04-30 | 广电计量检测（沈阳）有限公司 | Method for testing fatigue life of structure |
| CN112033830B (en) * | 2020-08-27 | 2021-11-19 | 盐城工学院 | Wind power blade multi-angle fatigue mechanical property detection device and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201464169U (en) * | 2009-07-02 | 2010-05-12 | 天津鑫茂鑫风能源科技有限公司 | Excitation method experimental device for fatigue test of large-sized wind power vanes |
| CN104854442A (en) * | 2012-12-20 | 2015-08-19 | 韩国机械研究院 | Air resistance reduction device for fatigue test for blade and method for installing same |
| CN105593661A (en) * | 2014-05-21 | 2016-05-18 | 韩国机械研究院 | Resonance generating device for testing fatigue of blade that maximizes moving mass ratio and fatigue testing method using same |
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| EP2379878B2 (en) * | 2008-12-17 | 2018-01-10 | Vestas Wind Systems A/S | Fairing for wind turbine blade |
-
2017
- 2017-04-19 CN CN201710254998.1A patent/CN106840928B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201464169U (en) * | 2009-07-02 | 2010-05-12 | 天津鑫茂鑫风能源科技有限公司 | Excitation method experimental device for fatigue test of large-sized wind power vanes |
| CN104854442A (en) * | 2012-12-20 | 2015-08-19 | 韩国机械研究院 | Air resistance reduction device for fatigue test for blade and method for installing same |
| CN105593661A (en) * | 2014-05-21 | 2016-05-18 | 韩国机械研究院 | Resonance generating device for testing fatigue of blade that maximizes moving mass ratio and fatigue testing method using same |
Non-Patent Citations (2)
| Title |
|---|
| 风电叶片单点疲劳加载过程数值仿真与试验;张磊安 等;《振动、测试与诊断》;20140831;第34卷(第4期);732-736 |
| 风电叶片双轴疲劳加载系统振动分析;廖高华 等;《噪声与振动控制》;20141031;第34卷(第5期);114-116 |
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