CN103557775B - Large-scale leaf cross-section flange profile measurement spring chain device and measuring method thereof - Google Patents
Large-scale leaf cross-section flange profile measurement spring chain device and measuring method thereof Download PDFInfo
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- CN103557775B CN103557775B CN201310471302.2A CN201310471302A CN103557775B CN 103557775 B CN103557775 B CN 103557775B CN 201310471302 A CN201310471302 A CN 201310471302A CN 103557775 B CN103557775 B CN 103557775B
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Abstract
The invention belongs to measurement apparatus field, especially relate to a kind of large-scale leaf cross-section flange profile measurement spring chain device and measuring method。It solve existing measurement apparatus and measure the problems such as scope is little。This device includes basic point support and some triangular pyramids detent mechanisms, the both sides of basic point support connect a triangular pyramids detent mechanism respectively through spring assembly, it is sequentially connected respectively through spring assembly between each triangular pyramids detent mechanism, and basic point support and each triangular pyramids detent mechanism connect into the chain type measurement system of a closing through each spring assembly, measure basic point support and triangular pyramids detent mechanism center when system is arranged on tested blade surface when chain type and be on the same cross section of tested blade, chain type measurement system is provided with detection and processes device。The advantage of this large-scale leaf cross-section flange profile measurement spring chain device is in that: mechanism's flexible adjustment, with low cost, measures scope big, highly versatile。
Description
Technical field
The invention belongs to measurement apparatus field, especially relate to a kind of large-scale leaf cross-section flange profile measurement spring chain device and measuring method thereof。
Background technology
Development along with Wind Power Generation Industry, increasing Wind turbines puts into operation, and the detection of wind electricity blade is very necessary with maintenance, there is presently no the measurement apparatus being exclusively used in large-scale blade cross section profile, traditional measuring method is the performance difficulty because blade dimensions is too big again, relatively costly。
In order to solve prior art Problems existing, people have carried out long-term exploration, it is proposed that solution miscellaneous。Such as, Chinese patent literature discloses a kind of precision of blades of gas turbine device for fast detecting and detection method [application number: 200910024400.5] thereof, including contour outline measuring set, it is symmetricly set in the both sides of blade locking device, including leading screw, guide rail, bearing, bearing block and shaft coupling, the two ends of leading screw are by the bearings in bearing block, guide rail is positioned at the lower section of leading screw, the closed at both ends of guide rail is in bearing block, the top of measuring cell is set on leading screw, the lower end of measuring cell coordinates with guide rail, shaft coupling is loaded on one end of leading screw and is connected with motor, measuring cell by motor drive along leading screw on guide rail for linear motion, the movement locus of measuring cell is consistent with the trend putting film trap on described tenon setting element, measuring cell includes measuring pen, spring, optical grating ruler measurement device, grating scale and sleeve, upper cartridge is provided with and the through hole of leading screw suit, it is provided with in the middle part of sleeve and the cavity of the perpendicular trend of described through hole, the middle front part of this cavity is provided with stopping means, the penholder of measuring pen is provided with limiting plate, circumferentially disposed along measuring pen of limiting plate, limiting plate is positioned at the inner side of cavity stopping means, stopping means coordinates the position of restriction measuring pen with limiting plate, measuring pen runs through the cavity of sleeve, the afterbody of measuring pen is provided with grating scale, the obverse sleeve of grating scale is provided with supporting optical grating ruler measurement device, spring housing is loaded on measuring pen stage casing and is limited between measuring pen limiting plate and sleeve cavity end, the nib of measuring pen and tested spoon of blade keep in touch, the lower end of sleeve coordinates with guide rail。
Such scheme to some extent solves the measurement problem of blade profile profile, but the program still also exists device complexity, measurement is limited in scope, and mechanism regulates underaction, the problem not being suitable for large-scale blade。
Summary of the invention
It is an object of the invention to for the problems referred to above, it is provided that a kind of highly versatile, mechanism's flexible adjustment and the adjustable large-scale leaf cross-section flange profile measurement spring chain device of precision。
It is another object of the present invention to provide a kind of easy to implement, adjustable measuring method utilizing large-scale leaf cross-section flange profile measurement spring chain device of precision for the problems referred to above。
For reaching above-mentioned purpose, present invention employs following technical proposal: this large-scale leaf cross-section flange profile measurement spring chain device, it is characterized in that, this device includes basic point support and some triangular pyramids detent mechanisms, a described triangular pyramids detent mechanism is connected respectively through spring assembly in the both sides of basic point support, it is sequentially connected respectively through spring assembly between each triangular pyramids detent mechanism, and basic point support and each triangular pyramids detent mechanism connect into the chain type measurement system of a closing through each spring assembly, basic point support and triangular pyramids detent mechanism center described in when chain type measurement system is arranged on tested blade surface are on the same cross section of tested blade, described chain type measurement system is provided with detection and processes device。
Obviously, connect some triangular pyramids detent mechanisms by spring assembly and be adapted to the tested blade of arbitrary size, mechanism reconciles very flexible, basic point support is adsorbed on tested blade inlet edge, basic point fixing means is easy accurately, whole measurement system cost is low, measures quickly, and certainty of measurement can pass through the on-demand adjustment of number of the triangular pyramids detent mechanism linked。Large-scale leaf cross-section flange profile can be measured easily by detecting and process device。
In above-mentioned large-scale leaf cross-section flange profile measurement spring chain device, described detection and process device include being separately positioned on basic point support both sides and for measuring the pulling force sensor of the spring assembly pulling force being connected between this side of basic point support and triangular pyramids detent mechanism, each triangular pyramids detent mechanism is respectively provided with the pulling force sensor of the spring assembly pulling force measured between this triangular pyramids detent mechanism and adjacent triangular pyramids detent mechanism, described basic point support is provided with power supply and signal processing module and is arranged on the pulling force sensor of basic point support both sides and is all connected with power supply and signal processing module, each triangular pyramids detent mechanism is respectively equipped with power supply and signaling interface and the pulling force sensor that is arranged on this triangular pyramids detent mechanism is correspondingly connected on corresponding power supply and signaling interface, described power supply and signal processing module are connected with each power supply and signaling interface by power supply and holding wire。
In above-mentioned large-scale leaf cross-section flange profile measurement spring chain device, described basic point support includes elastic rotation shaft assembly, it is symmetrically arranged on two with clamping part at elastic rotation shaft assembly, basic point sucker it is respectively equipped with inside each clamping part, each clamping part is respectively equipped with interior U-shaped support and outer U-shaped support, described interior U-shaped stent ends is provided with the interior upper hinge being coaxially disposed and interior middle hinge, described outer U-shaped stent ends is provided with the outside upper hinge being coaxially disposed, hinge and outside lower hinge in outer, described triangular pyramids detent mechanism includes the triangular pyramids being formed by connecting by the body of rod, it is provided with support sucker in triangular pyramids bottom center, between triangular pyramids bottom center and summit, mark post is installed, mark post is provided with hinge rotating shaft and is perpendicular to hinge component under the mark post upper hinge unit of mark post and mark post, described mark post upper hinge unit includes the outside upper hinge of mark post, hinge and the outside lower hinge of mark post during mark post is outer, under described mark post, hinge component includes upper hinge and the interior middle hinge of mark post in mark post；Described elastic rotation shaft assembly central point, basic point sucker central point and mark post central point are on the same cross section of tested blade。
In above-mentioned large-scale leaf cross-section flange profile measurement spring chain device, described spring assembly includes the first extension spring, second extension spring and the 3rd extension spring, the outside upper hinge of described clamping part is provided with described pulling force sensor and this pulling force sensor and is connected by the outer middle hinge of the first extension spring and mark post, the outside lower hinge of described clamping part is provided with described pulling force sensor and this pulling force sensor and is connected by the second extension spring hinge middle with in mark post, the interior upper hinge of described clamping part is provided with described pulling force sensor and this pulling force sensor and is connected by the outer middle hinge of the 3rd extension spring and mark post；The outside upper hinge of mark post on triangular pyramids is provided with described pulling force sensor and this pulling force sensor and is connected by the outer middle hinge of the first extension spring and the mark post on adjacent triangular pyramids, the outside lower hinge of mark post on triangular pyramids is provided with described pulling force sensor and this pulling force sensor and is connected by the second extension spring hinge middle with in the mark post on adjacent triangular pyramids, it is connected by the outer middle hinge of the 3rd extension spring and the mark post on adjacent triangular pyramids that the interior upper hinge of mark post on triangular pyramids is provided with described pulling force sensor and this pulling force sensor。
In above-mentioned large-scale leaf cross-section flange profile measurement spring chain device, described elastic rotation shaft assembly includes the outer shaft being fixed therein on a clamping part and the interior rotating shaft being fixed on another clamping part, described outer shaft and interior rotating shaft are coaxially disposed and are provided with torsion spring between the two, be provided with rotary encoder in one end of outer shaft, described rotary encoder is connected with described power supply and signal processing module。
In above-mentioned large-scale leaf cross-section flange profile measurement spring chain device, described triangular pyramids detent mechanism is equilateral triangle tetrahedron detent mechanism, and three apex in the equilateral triangle bottom surface of triangular pyramids detent mechanism are respectively equipped with Universal pulley。
Its length of spring assembly directly can be measured according to pulling force sensor feedack, first group of data can be obtained based on the clamping part each support sucker center point coordinate of end hinge centres point position calculation when measuring, second group of data is obtained further according to another clamping part each support sucker center point coordinate of end hinge centres point position calculation, the coordinate of two groups of data same position points is averaged, carrying out cross-sectional profiles calculating again, the measuring method of two clamping part connected modes improves certainty of measurement。Support sucker is arranged on the bottom of detent mechanism and improves the positioning precision of contact point after spring straining。
A kind of measuring method utilizing large-scale leaf cross-section flange profile measurement spring chain device, it is characterised in that this measuring method comprises the following steps:
A. the quantity of triangular pyramids detent mechanism is determined as required, closing chain type basic point support and some triangular pyramids detent mechanisms connected into spring assembly is measured system and is set in tested blade surface, described basic point support withstands tested blade inlet edge, each triangular pyramids detent mechanism is respectively positioned at tested blade surface, and each spring assembly is in extended state, described basic point support and triangular pyramids detent mechanism center and is on the same cross section of tested blade；
B. start detection and process device, and obtaining the cross section profile expression formula of tested blade according to result。
In above-mentioned measuring method, in above-mentioned step a, the elastic rotation shaft assembly central point of described basic point support, the basic point sucker central point of basic point support and the mark post central point of triangular pyramids detent mechanism are on the same cross section of tested blade。
In above-mentioned measuring method, in above-mentioned step b, the center of circle O being basis coordinates system P with the interior spindle central of basic point support Elastic rotating assembly, and obtain the coordinate S of two basic point sucker central points in basic point support according to rotary encoder and basic point support parameter01And S02, and the coordinate P that the outer middle hinge of basic point support any one or two clamping parts is corresponding with interior middle hinge centres01And P02, and O, S01、S02、P01、P02All on the cross section Q of tested blade；The tension of each spring assembly makes the mark post of each triangular pyramids detent mechanism be on the Q of cross section, the support sucker central point C of each triangular pyramids detent mechanismnAlso all on the Q of cross section, the first extension spring of spring assembly, the second extension spring, the 3rd extension spring length respectively Lm1、Lm2And Lm3, the central point p of hinge during the outer middle hinge of mark post on the mark post of triangular pyramids detent mechanism, mark post are interiorn1And pn2Between distance be D, the central point p of hinge in described mark postn2Support sucker central point C with corresponding triangular pyramids detent mechanismnBetween distance be d, wherein n is the sequence number of triangular pyramids detent mechanism and is 1 from the sequence number of the sequence number of the sequence number of the nearest triangular pyramids detent mechanism of above-mentioned clamping part to be 1, m be spring assembly and the spring assembly that is connected to above-mentioned clamping part；According to P01、P02、pn1、pn2Position relationship can solve corresponding mark post outer in hinge, mark post in hinge centres point pn1、pn2Coordinate figure,
Namely by equation group
A p can be solvedn1Coordinate figure
By equation group
A P can be solvedn2Coordinate figure
By equation group
A C can be solvednCoordinate figure
Thus can obtain each support sucker central point C1、C2、C3…Cn, the coordinate S of the basic point sucker central point then above step obtained01、S02With support sucker central point C1、C2、C3…CnDo difference, the expression formula of blade profile profile can be obtained。
Compared with prior art, the advantage of this large-scale leaf cross-section flange profile measurement spring chain device and measuring method thereof is in that: mechanism's flexible adjustment, highly versatile, spring assembly makes chain type measure alliance and regulates simple and fast, error is little, triangular pyramids detent mechanism number can artificially be arranged, it is possible to adapts to different size of leaf cross-section and measures needs。
Accompanying drawing explanation
Fig. 1 is large-scale leaf cross-section flange profile measurement spring chain device schematic diagram provided by the invention；
Fig. 2 is the close-up schematic view at A place in Fig. 1；
Fig. 3 is the close-up schematic view at B place in Fig. 1；
Fig. 4 is basic point supporting structure schematic diagram provided by the invention；
Fig. 5 is triangular pyramids detent mechanism top view provided by the invention；
Fig. 6 is another structural representation provided by the invention。
Fig. 7 is partial enlargement structural representation provided by the invention。
In figure, tested blade 100, basic point support 1, elastic rotation shaft assembly 11, outer shaft 111, interior rotating shaft 112, torsion spring 113, clamping part 12, basic point sucker 13, interior U-shaped support 14, interior upper hinge 141, hinge 142 in interior, outer U-shaped support 15, outside upper hinge 151, hinge 152 in outer, outside lower hinge 153, triangular pyramids detent mechanism 2, the body of rod 21, triangular pyramids 22, support sucker 23, mark post 24, mark post upper hinge unit 25, the outside upper hinge 251 of mark post, hinge 252 during mark post is outer, the outside lower hinge 253 of mark post, hinge component 26 under mark post, upper hinge 261 in mark post, hinge 262 in mark post, Universal pulley 27, spring assembly 3, first extension spring 31, second extension spring 32, 3rd extension spring 33, pulling force sensor 4, power supply and signal processing module 5, power supply and signaling interface 6, power supply and holding wire 7, rotary encoder 8。
Detailed description of the invention
As shown in figs. 1-7, this large-scale leaf cross-section flange profile measurement spring chain device, including basic point support 1 and some triangular pyramids detent mechanisms 2, a described triangular pyramids detent mechanism 2 is connected respectively through spring assembly 3 in the both sides of basic point support 1, it is sequentially connected respectively through spring assembly 3 between each triangular pyramids detent mechanism 2, and basic point support 1 and each triangular pyramids detent mechanism 2 connect into the chain type measurement system of a closing through each spring assembly 3, basic point support 1 and triangular pyramids detent mechanism 2 center described in when chain type measurement system is arranged on tested blade 100 surface are on the tested same cross section of blade 100, chain type measurement system is provided with detection and processes device。Triangular pyramids detent mechanism 2 is equilateral triangle tetrahedron detent mechanism, and three apex in the equilateral triangle bottom surface of triangular pyramids detent mechanism 2 are respectively equipped with Universal pulley 27。
More specifically, detection and process device include being separately positioned on basic point support 1 both sides and for measuring the pulling force sensor 4 of spring assembly 3 pulling force being connected between this side of basic point support 1 and triangular pyramids detent mechanism 2, each triangular pyramids detent mechanism 2 is respectively provided with the pulling force sensor 4 of spring assembly 3 pulling force measured between this triangular pyramids detent mechanism 2 and adjacent triangular pyramids detent mechanism 2, described basic point support 1 is provided with power supply and signal processing module 5 and is arranged on the pulling force sensor 4 of basic point support 1 both sides and is all connected with power supply and signal processing module 5, each triangular pyramids detent mechanism 2 is respectively equipped with power supply and signaling interface 6 and the pulling force sensor 4 that is arranged on this triangular pyramids detent mechanism 2 is correspondingly connected on corresponding power supply and signaling interface 6, described power supply and signal processing module 5 are connected with each power supply and signaling interface 6 by power supply and holding wire 7。
In the present embodiment, basic point support 1 includes elastic rotation shaft assembly 11, elastic rotation shaft assembly 11 includes the outer shaft 111 being fixed therein on a clamping part 12 and the interior rotating shaft 112 being fixed on another clamping part 12, described outer shaft 111 and interior rotating shaft 112 are coaxially disposed and are provided with torsion spring 113 between the two, be provided with rotary encoder 8 in one end of outer shaft 111, described rotary encoder 8 is connected with described power supply and signal processing module 5。
It is symmetrically arranged on two with clamping part 12 at elastic rotation shaft assembly 11, it is respectively equipped with basic point sucker 13 inside each clamping part 12, each clamping part 12 is respectively equipped with interior U-shaped support 14 and outer U-shaped support 15, described interior U-shaped support 14 end is provided with the interior upper hinge 141 and interior middle hinge 142 that are coaxially disposed, described outer U-shaped support 15 end is provided with the outside upper hinge 151 being coaxially disposed, hinge 152 and outside lower hinge 153 in outer, described triangular pyramids detent mechanism 2 includes the triangular pyramids 22 being formed by connecting by the body of rod 21, at triangular pyramids 22, bottom center is provided with support sucker 23, mark post 24 is installed between triangular pyramids 22 bottom center and summit, mark post 24 is provided with hinge rotating shaft and is perpendicular to hinge component 26 under the mark post upper hinge unit 25 of mark post 24 and mark post, described mark post upper hinge unit 25 includes the outside upper hinge 251 of mark post, hinge 252 and the outside lower hinge 253 of mark post during mark post is outer, under described mark post, hinge component 26 includes upper hinge 261 and the interior middle hinge 262 of mark post in mark post；Described elastic rotation shaft assembly 11 central point, basic point sucker 13 central point and mark post 24 central point are on the tested same cross section of blade 100。
Spring assembly 3 includes the first extension spring the 31, second extension spring 32 and the 3rd extension spring 33。The outside upper hinge 151 of clamping part 12 is provided with described pulling force sensor 4 and this pulling force sensor 4 and is connected by the outer middle hinge 252 of the first extension spring 31 and mark post, the outside lower hinge 153 of described clamping part 12 is provided with described pulling force sensor 4 and this pulling force sensor 4 and is connected by the second extension spring 32 hinge 262 middle with in mark post, and the interior upper hinge 141 of described clamping part 12 is provided with described pulling force sensor 4 and this pulling force sensor 4 and is connected by the outer middle hinge 252 of the 3rd extension spring 33 and mark post；The outside upper hinge of mark post 251 on triangular pyramids 22 is provided with described pulling force sensor 4 and this pulling force sensor 4 and is connected by the outer middle hinge 252 of the first extension spring 31 and the mark post on adjacent triangular pyramids 22, it is connected by the second extension spring 32 hinge 262 middle with in the mark post on adjacent triangular pyramids 22 that the outside lower hinge of mark post 253 on triangular pyramids 22 is provided with described pulling force sensor 4 and this pulling force sensor 4, and it is connected by hinge 252 middle outside the 3rd extension spring 33 and the mark post on adjacent triangular pyramids 22 that the interior upper hinge 261 of the mark post on triangular pyramids 22 is provided with described pulling force sensor 4 and this pulling force sensor 4。
A kind of measuring method utilizing above-mentioned large-scale leaf cross-section flange profile measurement spring chain device, it is characterised in that this measuring method comprises the following steps:
A. the quantity of triangular pyramids detent mechanism 2 is determined as required, closing chain type basic point support 1 and some triangular pyramids detent mechanisms 2 connected into spring assembly 3 is measured system and is set in tested blade 100 surface, described basic point support 1 withstands tested blade 100 leading edge, each triangular pyramids detent mechanism 2 is respectively positioned at tested blade 100 surface, and each spring assembly 3 is in extended state, described basic point support 1 and triangular pyramids detent mechanism 2 center and is on the tested same cross section of blade 100；
B. start detection and process device, and obtaining the cross section profile expression formula of tested blade 100 according to result。
In above-mentioned step a, elastic rotation shaft assembly 11 central point of described basic point support 1, basic point sucker 13 central point of basic point support 1 and mark post 24 central point of triangular pyramids detent mechanism 2 are on the tested same cross section of blade 100。
In above-mentioned step b, the center of circle O being basis coordinates system P with interior rotating shaft 112 center of basic point support 1 Elastic rotating assembly 11, and obtain the coordinate S of two basic point sucker 13 central points in basic point support 1 according to rotary encoder 8 and basic point support 1 parameter01And S02, and the coordinate P that the outer middle hinge 152 of basic point support 1 any one or two clamping parts 12 is corresponding with interior middle hinge 142 center01And P02, and O, S01、S02、P01、P02All on the cross section Q of tested blade 100；The tension of each spring assembly 3 makes the mark post 24 of each triangular pyramids detent mechanism 2 be on the Q of cross section, the support sucker 23 central point C of each triangular pyramids detent mechanism 2nAlso all on the Q of cross section, the length respectively L of first extension spring the 31, second extension spring the 32, the 3rd extension spring 33 of spring assembly 3m1、Lm2And Lm3, the central point p of hinge 162 during the outer middle hinge 152 of mark post on the mark post 24 of triangular pyramids detent mechanism 2, mark post are interiorn1And pn2Between distance be D, the central point p of hinge 162 in described mark postn2Support sucker 23 central point C with corresponding triangular pyramids detent mechanism 2nBetween distance be d, wherein n is the sequence number of triangular pyramids detent mechanism 2 and is 1 from the sequence number of the sequence number of the sequence number of the nearest triangular pyramids detent mechanism 2 of above-mentioned clamping part 12 to be 1, m be spring assembly 3 and the spring assembly 3 that is connected to above-mentioned clamping part 12；According to P01、P02、pn1、pn2Position relationship can solve corresponding mark post outer in hinge 152, mark post in hinge 162 central point pn1、pn2Coordinate figure,
Namely by equation group
A p can be solvedn1Coordinate figure
By equation group
A P can be solvedn2Coordinate figure
By equation group
A C can be solvednCoordinate figure
Thus can obtain each support sucker 23 central point C1、C2、C3…Cn, the coordinate S of basic point sucker 13 central point then above step obtained01、S02With support sucker 23 central point C1、C2、C3…CnDo difference, the expression formula of blade profile profile can be obtained。
Obviously, connect some triangular pyramids detent mechanisms by spring assembly and be adapted to the tested blade of arbitrary size, mechanism reconciles very flexible, basic point support is adsorbed on tested blade inlet edge, basic point fixing means is easy accurately, whole measurement system cost is low, measures quickly, and certainty of measurement can pass through the on-demand adjustment of number of the triangular pyramids detent mechanism linked。Large-scale leaf cross-section flange profile can be measured easily by detecting and process device。Its length of spring assembly directly can be measured according to pulling force sensor feedack, first group of data can be obtained based on the clamping part each support sucker center point coordinate of end hinge centres point position calculation when measuring, second group of data is obtained further according to another clamping part each support sucker center point coordinate of end hinge centres point position calculation, the coordinate of two groups of data same position points is averaged, carrying out cross-sectional profiles calculating again, the measuring method of two clamping part connected modes improves certainty of measurement。Support sucker is arranged on the bottom of detent mechanism and improves the positioning precision of contact point after spring straining。
In the present invention, basic point support 1 parameter various sizes parameter referring to basic point support 1 etc.。The center of circle O that the present invention is basis coordinates system P with interior rotating shaft 112 center of basic point support 1 Elastic rotating assembly 11, i.e. zero。In aforesaid equation, it is the coordinate points in basis coordinates system P with lower target X, Y。Wherein n, m are natural number。In set of equations, first extension spring the 31, second extension spring the 32, the 3rd extension spring 33 length of spring assembly 3 directly can be measured according to pulling force sensor 4 feedack。
Specific embodiment described herein is only to present invention spirit explanation for example。Described specific embodiment can be made various amendment or supplements or adopt similar mode to substitute by those skilled in the art, but without departing from the spirit of the present invention or surmount the scope that appended claims is defined。
Although more employing tested blade 100 herein, basic point support 1, elastic rotation shaft assembly 11, outer shaft 111, interior rotating shaft 112, torsion spring 113, clamping part 12, basic point sucker 13, interior U-shaped support 14, interior upper hinge 141, hinge 142 in interior, outer U-shaped support 15, outside upper hinge 151, hinge 152 in outer, outside lower hinge 153, triangular pyramids detent mechanism 2, the body of rod 21, triangular pyramids 22, support sucker 23, mark post 24, mark post upper hinge unit 25, the outside upper hinge 251 of mark post, hinge 252 during mark post is outer, the outside lower hinge 253 of mark post, hinge component 26 under mark post, upper hinge 261 in mark post, hinge 262 in mark post, Universal pulley 27, spring assembly 3, first extension spring 31, second extension spring 32, 3rd extension spring 33, pulling force sensor 4, power supply and signal processing module 5, power supply and signaling interface 6, power supply and holding wire 7, rotary encoder 8 term such as grade, but it is not precluded from using the probability of other term。These terms are used to be only used to describe and explain more easily the essence of the present invention；It is all contrary with spirit of the present invention for being construed as any additional restriction。
Claims (4)
1. one kind large-scale leaf cross-section flange profile measurement spring chain device, it is characterized in that, this device includes basic point support (1) and some triangular pyramids detent mechanisms (2), a described triangular pyramids detent mechanism (2) is connected respectively through spring assembly (3) in the both sides of basic point support (1), it is sequentially connected respectively through spring assembly (3) between each triangular pyramids detent mechanism (2), and basic point support (1) and each triangular pyramids detent mechanism (2) connect into the chain type measurement system of a closing through each spring assembly (3), basic point support (1) and triangular pyramids detent mechanism (2) center described in when chain type measurement system is arranged on tested blade (100) surface are on tested blade (100) same cross section, described chain type measurement system is provided with detection and processes device, described detection and process device include being separately positioned on basic point support (1) both sides and being used for the pulling force sensor (4) of spring assembly (3) pulling force that measurement is connected between basic point support (1) and triangular pyramids detent mechanism (2), each triangular pyramids detent mechanism (2) is respectively provided with the pulling force sensor (4) of spring assembly (3) pulling force measured between this triangular pyramids detent mechanism (2) and adjacent triangular pyramids detent mechanism (2), described basic point support (1) is provided with power supply and signal processing module (5) and is arranged on the pulling force sensor (4) of basic point support (1) both sides and is all connected with power supply and signal processing module (5), each triangular pyramids detent mechanism (2) is respectively equipped with power supply and signaling interface (6) and the pulling force sensor (4) that is arranged on this triangular pyramids detent mechanism (2) is correspondingly connected on corresponding power supply and signaling interface (6), described power supply and signal processing module (5) are connected with each power supply and signaling interface (6) by power supply and holding wire (7), described basic point support (1) includes elastic rotation shaft assembly (11), it is symmetrically arranged on two with clamping part (12) at elastic rotation shaft assembly (11), it is respectively equipped with basic point sucker (13) in each clamping part (12) inner side, each clamping part (12) is respectively equipped with interior U-shaped support (14) and outer U-shaped support (15), described interior U-shaped support (14) end is provided with the interior upper hinge (141) and interior middle hinge (142) that are coaxially disposed, described outer U-shaped support (15) end is provided with the outside upper hinge (151) being coaxially disposed, hinge (152) and outside lower hinge (153) in outer, described triangular pyramids detent mechanism (2) includes the triangular pyramids (22) being formed by connecting by the body of rod (21), it is provided with support sucker (23) in triangular pyramids (22) bottom center, at triangular pyramids (22), mark post (24) is installed between bottom center and summit, mark post (24) is provided with hinge rotating shaft and is perpendicular to hinge component (26) under the mark post upper hinge unit (25) of mark post (24) and mark post, described mark post upper hinge unit (25) includes the outside upper hinge of mark post (251), hinge (252) and the outside lower hinge of mark post (253) during mark post is outer, under described mark post, hinge component (26) includes upper hinge (261) and the interior middle hinge (262) of mark post in mark post；Described elastic rotation shaft assembly (11) central point, basic point sucker (13) central point and mark post (24) central point are on tested blade (100) same cross section, described spring assembly (3) includes the first extension spring (31), second extension spring (32) and the 3rd extension spring (33), the outside upper hinge (151) of described clamping part (12) is provided with described pulling force sensor (4) and this pulling force sensor (4) and is connected by the outer middle hinge (252) of the first extension spring (31) and mark post, the outside lower hinge (153) of described clamping part (12) is provided with described pulling force sensor (4) and this pulling force sensor (4) and is connected by the second extension spring (32) hinge (262) middle with in mark post, the interior upper hinge (141) of described clamping part (12) is provided with described pulling force sensor (4) and this pulling force sensor (4) and is connected by the outer middle hinge (252) of the 3rd extension spring (33) and mark post；The outside upper hinge of mark post (251) on triangular pyramids (22) is provided with described pulling force sensor (4) and this pulling force sensor (4) and is connected by the outer middle hinge (252) of the first extension spring (31) and the mark post on adjacent triangular pyramids (22), the outside lower hinge of mark post (253) on triangular pyramids (22) is provided with described pulling force sensor (4) and this pulling force sensor (4) and is connected by the second extension spring (32) hinge (262) middle with in the mark post on adjacent triangular pyramids (22), the interior upper hinge (261) of mark post on triangular pyramids (22) is provided with described pulling force sensor (4) and this pulling force sensor (4) and is connected by the outer middle hinge (252) of the 3rd extension spring (33) and the mark post on adjacent triangular pyramids (22), described elastic rotation shaft assembly (11) includes the outer shaft (111) being fixed therein on a clamping part (12) and the interior rotating shaft (112) being fixed on another clamping part (12), described outer shaft (111) and interior rotating shaft (112) are coaxially disposed and are provided with between the two torsion spring (113), it is provided with rotary encoder (8) in one end of outer shaft (111), described rotary encoder (8) is connected with described power supply and signal processing module (5), described triangular pyramids detent mechanism (2) is equilateral triangle tetrahedron detent mechanism, three apex in the equilateral triangle bottom surface of triangular pyramids detent mechanism (2) are respectively equipped with Universal pulley (27)。
2. the measuring method of the large-scale leaf cross-section flange profile measurement spring chain device utilized described in claim 1, it is characterised in that this measuring method comprises the following steps:
A. the quantity of triangular pyramids detent mechanism (2) is determined as required, closing chain type basic point support (1) and some triangular pyramids detent mechanisms (2) connected into spring assembly (3) is measured system and is set in tested blade (100) surface, described basic point support (1) withstands tested blade (100) leading edge, each triangular pyramids detent mechanism (2) is respectively positioned at tested blade (100) surface, and each spring assembly (3) is in extended state, described basic point support (1) and triangular pyramids detent mechanism (2) center are on tested blade (100) same cross section；
B. start detection and process device, and obtaining the cross section profile expression formula of tested blade (100) according to result。
3. measuring method according to claim 2, in above-mentioned step a, elastic rotation shaft assembly (11) central point of described basic point support (1), basic point sucker (13) central point of basic point support (1) and mark post (24) central point of triangular pyramids detent mechanism (2) are on tested blade (100) same cross section。
4. the measuring method according to Claims 2 or 3, in above-mentioned step b, the center of circle O being basis coordinates system P with interior rotating shaft (112) center of basic point support (1) Elastic rotating assembly (11), and obtain the coordinate S of two basic point sucker (13) central points in basic point support (1) according to rotary encoder (8) and basic point support (1) parameter01And S02, and the coordinate P that the outer middle hinge (152) of basic point support (1) any one or two clamping parts (12) is corresponding with interior middle hinge (142) center01And P02, and O, S01、S02、P01、P02All on the cross section Q of tested blade (100)；Each spring assembly (3) tension makes the mark post (24) of each triangular pyramids detent mechanism (2) be on the Q of cross section, support sucker (23) the central point C of each triangular pyramids detent mechanism (2)nAlso all on the Q of cross section, first extension spring (31) of spring assembly (3), the second extension spring (32), the 3rd extension spring (33) length respectively Lm1、Lm2And Lm3, the central point p of hinge (162) during the outer middle hinge (152) of mark post on the mark post (24) of triangular pyramids detent mechanism (2), mark post are interiorn1And pn2Between distance be D, the central point p of hinge (162) in described mark postn2Support sucker (23) central point C with corresponding triangular pyramids detent mechanism (2)nBetween distance be d, whereinnSequence number for triangular pyramids detent mechanism (2) and the sequence number from the nearest triangular pyramids detent mechanism (2) of above-mentioned clamping part (12) are 1, m be the sequence number of the sequence number of spring assembly (3) and the spring assembly (3) that is connected to above-mentioned clamping part (12) is 1；According to P01、P02、pn1、pn2Position relationship can solve corresponding mark post outer in hinge (152), mark post in hinge (162) central point pn1、pn2Coordinate figure,
Namely by equation group
A p can be solvedn1Coordinate figure
By equation group
A P can be solvedn2Coordinate figure
By equation group
A C can be solvednCoordinate figure
Thus can obtain each support sucker (23) central point C1、C2、C3…Cn, the coordinate S of basic point sucker (13) central point then above step obtained01、S02With support sucker (23) central point C1、C2、C3…CnDo difference, the expression formula of blade profile profile can be obtained。
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| CN1448693A (en) * | 2002-03-28 | 2003-10-15 | 通用电气公司 | Side lit, 3d edge location method |
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