CN107255442B - Large scale hydraulic generator stator based on laser tracking technology installs measurement method - Google Patents

Large scale hydraulic generator stator based on laser tracking technology installs measurement method Download PDF

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Publication number
CN107255442B
CN107255442B CN201710418433.2A CN201710418433A CN107255442B CN 107255442 B CN107255442 B CN 107255442B CN 201710418433 A CN201710418433 A CN 201710418433A CN 107255442 B CN107255442 B CN 107255442B
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Prior art keywords
measurement
stator
installation
point
steel
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CN107255442A (en
Inventor
李哲
吴光富
罗琛
刘宇鉴
邱章云
冯昌幸
林阳
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CHINA GEZHOUBA GROUP SURVEY & DESIGN INSTITUTE Co Ltd
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CHINA GEZHOUBA GROUP SURVEY & DESIGN INSTITUTE Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/08Measuring arrangements characterised by the use of optical means for measuring diameters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/24Measuring arrangements characterised by the use of optical means for measuring contours or curvatures
    • G01B11/2408Measuring arrangements characterised by the use of optical means for measuring contours or curvatures for measuring roundness
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/26Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/30Measuring arrangements characterised by the use of optical means for measuring roughness or irregularity of surfaces

Abstract

The present invention relates to the large scale hydraulic generator stators based on laser tracking technology to install measurement method, its accurate installation fields of measurement for being applied to metal structure and component, especially very big advantage has been played in Large Hydroelectric Set installation, the present invention is successfully applied in stator installment work, has reached good effect.Particular content and effect: laser tracker is introduced, make full use of the advantage that measurement accuracy is high, speed is fast, easy to operate in its short distance, the process of measurement of cooperation stand-alone development can realize the automatic measurements modes such as automatic observation, automatic data collection, real time data processing in stator installation process, improve operating efficiency, reduce human cost, simplify working procedure and construction process, conventional rack is installed, measurement method to industrial digital advances a step, in units' installation, fields of measurement important in inhibiting.

Description

Large scale hydraulic generator stator based on laser tracking technology installs measurement method
Technical field
The invention belongs to metal structure and the accurate installation fields of measurement of component, and in particular to one kind tracks skill based on laser The large scale hydraulic generator stator of art installs measurement method, is applied to the installation and detection accurate measurement of large scale hydrogenerator In.
Background technique
Currently, laser tracker is applied to more and more widely in industrial machinery manufacture installation and detection work, In the more production for being applied to the large scale structures such as aircraft manufacturing, shipbuilding in China, installation process, but answering in hydropower industry With also less, applied to there is no precedent in Hydropower Unit installation.We introduce Leica AT402 laser tracker, and (measurement is nominal Precision ± (15 μm+6 μm/m)), using its high-precision advantage, overall application is installed in measurement in turbine-generator units stator, Achieve good effect.
Since the requirement of Hydropower Unit stator installation accuracy is very high, the positional accuracy of surveying and locating requires to be less than 0.1mm.Tradition Stator installation control precision measurement means around survey round frame expansion, survey round frame first is that processing and installation required precision It is high;Second is that figure is huge, install time-consuming with adjustment;Third is that measurement efficiency is low and precision controlling difficulty is big.And laser tracks Instrument is small in size, and working space is more casual, and measuring speed is fast, measurement accuracy it is high and it is easy to ensure that, manpower and material resources consumption is few, have compared with Apparent economic benefit.
It is installed for stator, cooperate self-control workpiece using laser tracker and combines the process of measurement of independent development to stator The group of bracket is round, assembly, weld, matching component and upper ring plate, lower ring plate have carried out setting out survey, to stator in installation process The multinomial installation index such as circularity, radius, flatness, verticality carried out detection measurement, achieve good effect.
Summary of the invention
The purpose of the present invention is using laser tracker to play its advantage in large scale water-turbine unit, simplify Traditional measurement process is employed new technology, new method, and the working efficiency of large scale turbine-generator units precision installation is improved.
In order to realize above-mentioned technical characteristic, the technology used in the present invention is characterized in: based on the big of laser tracking technology Size hydraulic generator stator install measurement method, it is characterised in that: it the following steps are included:
Step1: cloth surveys SURVEYING CONTROL NETWORK;
Step2: measurement auxiliary mould is developed;
Step3: establishment process of measurement;
Step4: implement measurement method.
Specific steps in the Step1 are as follows:
1) network point designs, and since stator installment work face is related to horizontal and vertical space, this requires measurements to control Net processed need to meet the erection of different location instrument in installation process;It is calculated and reconnaissance trip mounting portion according to test of many times data Base control point of 12 datum marks being circular layout as SURVEYING CONTROL NETWORK is laid, and is met in actual measurement in position Each frame station will guarantee to observe at least four control point simultaneously, and have the extensibility in space, and it is suitable in laser tracker to guarantee Precision ranging in;
2) control point is buried, in the fitting limit of stator, selection sight is preferable, be not easy by breakage in installation and basis consolidates Place lay control point, be evenly arranged 12 control points around clipping room basis, then by the steel construction target ball of autonomous Design Pedestal is directly embedded on the basis of clipping room as control point or reserves steel plate welding with clipping room basis;
3) control net measurement, using the Technology Precision of laser tracker, once sets station, and measures 12 controls simultaneously It is processed, the space SA is utilized by repeatedly measuring to obtain no less than 6 groups of measurement data using each survey station as one group of measurement data After analysis software (Spatial Analyzer) obtains control point adjustment to multi-group data progress uniform spaces analysis of uncertainty Unified coordinate system as high-acruracy survey control net;
4) construction survey system is established, and high-acruracy survey is controlled net conversion into live stator installation system, i.e., specified New coordinate origin and start of calculation direction;Coordinate origin is stator installation center after it is converted, and starts orientation as stator support processing The +Y direction provided on part meets the needs of installation process at this point, having built up a set of high-precision construction control network.
Specific steps in the Step2 are as follows:
According to the specific measurement request in scene, a variety of measurement auxiliary tools are had developed, these auxiliary tools are largely It is difficult to solve organ's tracker single-point setting-out, the slow-footed problem of setting-out, one of single-point lofting tools are suitable for horizontal plane And precision is not in very high situation, single point precision 0.2mm to 0.5mm, operating speed is very fast, easy to operate.
Specific steps in the Step3 are as follows:
According to live specific requirement, secondary development is carried out to it on the basis of SA software, works out and is suitble to field operation MP process of measurement (Measure Plan), it can be controlled laser tracker and be carried out automatic measurement with coupled computer, and right Measurement data is handled in real time, and scene provides measurement result.
Specific steps in the Step4 are as follows:
1) stator installation early period carry out work, including stator support it is in place, assembling, splicing, group circle, leveling, welding With detection work, main task be exactly accurate measurement thereon, lower ring plate and buttress and circularity, the flatness of intermediate ring flat-plate etc. Parameter;Concrete operation method is similar, measured surface is directly contacted using laser tracker conjunction measuring target ball, in conjunction with MP program Related data is measured, while analyzing the deviation of data, is used for construction personnel;
2) the core through screw rod hole hole location setting-out of stator support lower ring plate, upper ring plate sets up instrument at the position for needing setting-out, Installation measurement coordinate system is set up, all layout point coordinate files are imported, in conjunction with good MP Setting-out procedures prepared in advance, is used The spot measurement pedestal of independent development carries out setting-out, it can be achieved that hole location automatic positioning, rapid survey, reality to the hole location on design drawing When display with Measured Coordinates difference carry out accurate settingout;
3) in stator component installation the pushing that carries out refer to, the accurate positioning of key components such as core lamination stack, positioning bar with test Measurement is received, due to the continuous follow-up of installation, to the serious shielding at control point, needs to establish new control network, Ji Kecong at this time Basic Control Networks using laser tracker carry out pilot measurement, as the Two-stage control point of part, at this time, predominantly associated component Detection work, carry out automatic measurement using MP detection program prepared in advance, provide the difference of component, in real time to adjust It is whole;
4) the body detection measurement work after installing core lamination stack, detects the circularity and verticality of entire body after lamination Index, guarantee are entirely mounted in a total system, meet poor demand limit, can be in measurement using tracker cooperation software Show the information such as radius, the height of measurement point.
The steel construction target ball pedestal uses rectangular susceptor, and the rectangular susceptor is mounted on embedded basis by being welded and fixed Reserved steel plate on, be machined with the first centre bore at the center of rectangular susceptor.
The steel construction target ball pedestal uses cylindrical base, and the center of the cylindrical base is machined with arc center Hole, the cylindrical base by viscose be bonded and fixed at it is embedded on the basis of.
It includes that tracker target ball and steel rush to the single-point lofting tools, the Surface of Sphere of the tracker target ball and steel bottom The centre bore of seat, which matches, merges positioning placement tracker target ball, and the upper surface edge of steel base is machined with chamfering, at steel bottom The lower end surface of seat is uniformly machined with multiple mounting holes around central shaft, strong magnetic iron prop is inlaid with inside mounting hole, in mounting hole Between through the radial direction of steel base be machined with the observation slot being arranged symmetrically, the height for observing slot is two points of steel base One of, steel punched through the centre bore of steel base, and the end of steel punching is machined with tapered end, and steel punching constitutes gap with centre bore and matches It closes.
Magnetic target ball pedestal is installed on the lower part concave profile of the stator lower ring plate, is put on the magnetism target ball pedestal It is equipped with tracker target ball.
The method have the advantages that:
1, change traditional stator installation working procedure and construction method, using laser tracker instead of survey round frame into Row in-site measurement has accomplished that measuring speed is fast, precision is high, high-efficient, and human and material resources investment is greatly saved, reduces costs.
2, measurement method and means are similar in the above measurement task, the high-precision control to have had built up Net sets station with basis, by any position, using different measuring tools, selects corresponding process of measurement.Work complete compared with For satisfaction, meet required precision, improves operating efficiency.
3, this example primarily illustrates laser tracker measuring technique and applies in stator installation, makes full use of its short distance The advantage that interior measurement accuracy is high, speed is fast, easy to operate, cooperates the process of measurement of stand-alone development can be in stator installation process It realizes the automatic measurements modes such as automatic observation, automatic data collection, real time data processing, improves operating efficiency, drop Low human cost, simplifies working procedure and construction process, conventional rack is installed, measurement method is promoted to industrial digitalization One step, in units' installation, fields of measurement important in inhibiting.
4, it is installed for stator, cooperate self-control workpiece using laser tracker and combines the process of measurement of independent development to fixed The group of submounts is round, assembly, weld, matching component and upper ring plate, lower ring plate have carried out setting out survey, to fixed in installation process The multinomial installation indexs such as circularity, radius, flatness, the verticality of son have carried out detection measurement, achieve good effect.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is that the first of the invention fixes control point pedestal -- the structural schematic diagram of steel construction target ball pedestal.
Fig. 2 is of the invention second fixed control point pedestal -- the structural schematic diagram of steel construction target ball pedestal.
In figure: embedded basis 1, rectangular susceptor 2, the first centre bore 3, cylindrical base 4, arc centre bore 5, viscose 6.
Fig. 3 is the steel base of single-point lofting tools of the invention and the structural schematic diagram that tracker target ball is matched and used.
Fig. 4 is that the steel base of single-point lofting tools of the invention and steel rush the structural schematic diagram matched and used.
In figure: tracker target ball 7, steel base 8, chamfering 9, centre bore 10, observation slot 11, mounting hole 12, tapered end 13, Steel punching 14.
Fig. 5 is running MP process of measurement surface chart of the invention.
Fig. 6 is target ball mounting structure schematic diagram in stator lower ring plate roundness measurement of the invention.
In figure: stator lower ring plate 15, magnetic target ball pedestal 16, lower part concave profile 17.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Embodiment 1:
As Fig. 1-installs measurement method based on the large scale hydraulic generator stator of laser tracking technology, it is characterised in that: It the following steps are included:
Step1: cloth surveys SURVEYING CONTROL NETWORK;
Step2: measurement auxiliary mould is developed;
Step3: establishment process of measurement;
Step4: implement measurement method.
Specific steps in the Step1 are as follows:
1) network point designs, and since stator installment work face is related to horizontal and vertical space, this requires measurements to control Net processed need to meet the erection of different location instrument in installation process;It is calculated and reconnaissance trip mounting portion according to test of many times data Base control point of 12 datum marks being circular layout as SURVEYING CONTROL NETWORK is laid, and is met in actual measurement in position Each frame station will guarantee to observe at least four control point simultaneously, and have the extensibility in space, and it is suitable in laser tracker to guarantee Precision ranging in;
2) control point is buried, in the fitting limit of stator, selection sight is preferable, be not easy by breakage in installation and basis consolidates Place lay control point, be evenly arranged 12 control points around clipping room basis, then by the steel construction target ball of autonomous Design Pedestal is directly embedded on the basis of clipping room as control point or reserves steel plate welding with clipping room basis;
3) control net measurement, using the Technology Precision of laser tracker, once sets station, and measures 12 controls simultaneously It is processed, the space SA is utilized by repeatedly measuring to obtain no less than 6 groups of measurement data using each survey station as one group of measurement data After analysis software (Spatial Analyzer) obtains control point adjustment to multi-group data progress uniform spaces analysis of uncertainty Unified coordinate system as high-acruracy survey control net;
4) construction survey system is established, and high-acruracy survey is controlled net conversion into live stator installation system, i.e., specified New coordinate origin and start of calculation direction;Coordinate origin is stator installation center after it is converted, and starts orientation as stator support processing The +Y direction provided on part meets the needs of installation process at this point, having built up a set of high-precision construction control network.
Specific steps in the Step2 are as follows:
According to the specific measurement request in scene, a variety of measurement auxiliary tools are had developed, these auxiliary tools are largely It is difficult to solve organ's tracker single-point setting-out, the slow-footed problem of setting-out, one of single-point lofting tools are suitable for horizontal plane And precision is not in very high situation, single point precision 0.2mm to 0.5mm, operating speed is very fast, easy to operate.
Specific steps in the Step3 are as follows:
According to live specific requirement, secondary development is carried out to it on the basis of SA software, works out and is suitble to field operation MP process of measurement (Measure Plan), it can be controlled laser tracker and be carried out automatic measurement with coupled computer, and right Measurement data is handled in real time, and scene provides measurement result.
Specific steps in the Step4 are as follows:
1) stator installation early period carry out work, including stator support it is in place, assembling, splicing, group circle, leveling, welding With detection work, main task be exactly accurate measurement thereon, lower ring plate and buttress and circularity, the flatness of intermediate ring flat-plate etc. Parameter;Concrete operation method is similar, measured surface is directly contacted using laser tracker conjunction measuring target ball, in conjunction with MP program Related data is measured, while analyzing the deviation of data, is used for construction personnel;
2) the core through screw rod hole hole location setting-out of stator support lower ring plate, upper ring plate sets up instrument at the position for needing setting-out, Installation measurement coordinate system is set up, all layout point coordinate files are imported, in conjunction with good MP Setting-out procedures prepared in advance, is used The spot measurement pedestal of independent development carries out setting-out, it can be achieved that hole location automatic positioning, rapid survey, reality to the hole location on design drawing When display with Measured Coordinates difference carry out accurate settingout;
3) in stator component installation the pushing that carries out refer to, the accurate positioning of key components such as core lamination stack, positioning bar with test Measurement is received, due to the continuous follow-up of installation, to the serious shielding at control point, needs to establish new control network, Ji Kecong at this time Basic Control Networks using laser tracker carry out pilot measurement, as the Two-stage control point of part, at this time, predominantly associated component Detection work, carry out automatic measurement using MP detection program prepared in advance, provide the difference of component, in real time to adjust It is whole;
4) the body detection measurement work after installing core lamination stack, detects the circularity and verticality of entire body after lamination Index, guarantee are entirely mounted in a total system, meet poor demand limit, can be in measurement using tracker cooperation software Show the information such as radius, the height of measurement point.
Embodiment 2:
Such as Fig. 1, the steel construction target ball pedestal uses rectangular susceptor 2, and the rectangular susceptor 2 is mounted on by being welded and fixed On the reserved steel plate on embedded basis 1, the first centre bore 3 is machined at the center of rectangular susceptor 2.During embedded, by by square Shape pedestal 2 is weldingly fixed on the reserved steel plate on embedded basis 1, and in specific measurement process, target ball is placed in rectangular susceptor 2 On first centre bore 3.And then 12 control points are evenly arranged around clipping room basis.
Embodiment 3:
Such as Fig. 2, the steel construction target ball pedestal uses cylindrical base 4, and the center of the cylindrical base 4 is machined with arc Shape centre bore 5, the cylindrical base 4 are bonded and fixed on embedded basis 1 by viscose 6.
Embodiment 4:
Such as Fig. 3,4, it includes that tracker target ball 7 and steel rush 14 to the single-point lofting tools, the circle of the tracker target ball 7 The centre bore 10 of spherical surface and steel base 8, which matches, merges positioning placement tracker target ball 7, and the upper surface edge of steel base 8 adds Work has chamfering 9, is uniformly machined with multiple mounting holes 12 around central shaft in the lower end surface of steel base 8, inlays inside mounting hole 12 Embedded with strong magnetic iron prop, the radial direction between mounting hole 12 through steel base 8 is machined with the observation slot 11 being arranged symmetrically, The height for observing slot 11 is the half of steel base 8, and steel punching 14 passes through the centre bore 10 of steel base 8, the end of steel punching 14 Portion is machined with tapered end 13, and steel punching 14 constitutes clearance fit with centre bore 10.
During specifically used:
1, before measurement or setting-out point, the operative upper surface of workpiece should be at horizontal position.
2, when setting-out, first tracker target ball is placed in steel base by steel base in the approximate location of setting-out point The upper end of centre bore, according to the mobile steel base of measurement result, since measurement accuracy is more demanding, in steel base from setting-out position Set deviation it is smaller when, should slowly squeeze steel base, to overcome magnetic force, be allowed to be accurately positioned, then remove tracker target ball, It is inserted into steel punching, then taps steel punching with hand hammer, to demarcate final point.
3, when measuring existing punching point coordinate on workpiece, steel is rushed into insertion steel base, rushes tapered end alignment punching using steel Point, steel base is positioned, and it is in a vertical state using steel base to guarantee that steel rushes, and is passed through observation slot and is checked tapered end position It sets, flashlight lighting can be used in insufficient light, be allowed to be correctly aligned and rush a little, then remove steel punching, put tracker target ball Measurement point position coordinate.
The invention of this set tool provides a kind of solution with setting-out for the Point Measurement on horizontal plane, can protect Effectively improve operating efficiency under the premise of card claimed accuracy, the scope of application of expanded laser light tracker, be suitable for horizontal plane and Precision is not single point precision 0.2mm to 0.5mm in very high situation, but operating speed is very fast, easy to operate.
Embodiment 5:
Such as Fig. 5, by SA(Spatial Analyzer) software on the basis of secondary development is carried out to it, establishment is suitble to The MP process of measurement (Measure Plan) of field operation, it can be controlled laser tracker and be surveyed automatically with coupled computer Amount, and measurement data is handled in real time, scene provides measurement result, greatly improves operating efficiency, saves people The investment of power material resources.
Known point azimuth, eyeball azimuth, known point radius and eyeball radius are obtained by software analysis, in turn Show that corresponding differential seat angle, semidiameter, coordinate difference and radial direction, transverse direction are poor.
Embodiment 7:
Such as Fig. 6, magnetic target ball pedestal 16, the magnetism are installed on the lower part concave profile 17 of the stator lower ring plate 15 Tracker target ball 7 is placed on target ball pedestal 16.
The present invention changes the working procedure and construction method of traditional stator installation, is justified using laser tracker instead of survey Frame carries out in-site measurement, has accomplished that measuring speed is fast, precision is high, high-efficient, and the human and material resources investment greatly saved reduces Time cost, reduce survey round frame installation, debugging it is cumbersome.

Claims (8)

1. large scale hydraulic generator stator based on laser tracking technology installs measurement method, it is characterised in that: it include with Lower step:
Step 1: cloth surveys SURVEYING CONTROL NETWORK;
Step 2: developing measurement auxiliary mould;
Step 3: establishment process of measurement;
Step 4: implementing measurement method;
Specific steps in the step 1 are as follows:
1) network point designs, and since stator installment work face is related to horizontal and vertical space, this requires SURVEYING CONTROL NETWORKs The erection of different location instrument in installation process need to be met;It is calculated and reconnaissance trip installation position, cloth according to test of many times data If base control point of 12 datum marks being circular layout as SURVEYING CONTROL NETWORK, and meet each frame in actual measurement Standing will guarantee to observe at least four control point simultaneously, and have the extensibility in space, guarantee in the suitable precision of laser tracker In ranging;
2) control point is buried, in the fitting limit of stator, selection sight is preferable, is not easy the ground that by breakage in installation and basis consolidates The control point Fang Bushe is evenly arranged 12 control points around clipping room basis, then by the steel construction target ball pedestal of autonomous Design It is directly embedded in as control point on the basis of clipping room or reserves steel plate welding with clipping room basis;
3) control net measurement, using the Technology Precision of laser tracker, once sets station, and measures 12 controls simultaneously Point, by repeatedly measuring to obtain no less than 6 groups of measurement data, utilizes the space SA point using each survey station as one group of measurement data Analysis software carries out the unified coordinate system conduct height after uniform spaces analysis of uncertainty obtains control point adjustment to multi-group data Precision measure controls net;
4) high-acruracy survey is controlled net conversion into live stator installation system, that is, specified newly by construction survey system foundation Coordinate origin and start of calculation direction;Coordinate origin is stator installation center after it is converted, and starting orientation is on stator support workpiece The +Y direction provided meets the needs of installation process at this point, having built up a set of high-precision construction control network.
2. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1, It is characterized in that, the specific steps in the step 2 are as follows:
According to the specific measurement request in scene, using single-point lofting tools, suitable for horizontal plane and precision is not very high situation Under, single point precision 0.2mm to 0.5mm.
3. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1, It is characterized in that, the specific steps in the step 3 are as follows:
According to live specific requirement, secondary development is carried out to it on the basis of SA software, works out the MP for being suitble to field operation Process of measurement, it can be controlled laser tracker and carry out automatic measurement, and be located in real time to measurement data with coupled computer Reason, scene provides measurement result.
4. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1, It is characterized in that, the specific steps in the step 4 are as follows:
1) stator installation early period carry out work, including stator support it is in place, assembling, splicing, group circle, leveling, welding and inspection Survey work, main task be exactly accurate measurement thereon, circularity, the flatness parameter of lower ring plate and buttress and intermediate ring flat-plate; Concrete operation method is directly to contact measured surface using laser tracker conjunction measuring target ball, measures phase in conjunction with MP program Data are closed, while analyzing the deviation of data, are used for construction personnel;
2) the core through screw rod hole hole location setting-out of stator support lower ring plate, upper ring plate sets up instrument at the position for needing setting-out, establishes Installation measurement coordinate system is played, all layout point coordinate files are imported, in conjunction with good MP Setting-out procedures prepared in advance, using autonomous The spot measurement pedestal of development on design drawing hole location carry out setting-out, it can be achieved that hole location automatic positioning, rapid survey, in real time show Show and carrys out accurate settingout with Measured Coordinates difference;
3) in stator component installation the pushing that carries out refer to, the accurate positioning and acceptance gauging of core lamination stack, positioning bar key component, Due to the continuous follow-up of installation, to the serious shielding at control point, need to establish new control network at this time, it can be from base control Net using laser tracker carry out pilot measurement, as the Two-stage control point of part, at this time, predominantly associated component detection work Make, carries out automatic measurement using MP detection program prepared in advance, provide the difference of component, in real time to adjust;
4) the body detection after installing core lamination stack measures work, and the circularity and verticality of entire body refer to after detection lamination Mark, guarantee are entirely mounted in a total system, meet poor demand limit, can be to show in measurement using tracker cooperation software Show radius, the elevation information of measurement point.
5. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1, It is characterized in that, the steel construction target ball pedestal uses rectangular susceptor (2), and the rectangular susceptor (2) is mounted on by being welded and fixed On the reserved steel plate of embedded basis (1), the first centre bore (3) are machined at the center of rectangular susceptor (2).
6. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1, It is characterized in that, the steel construction target ball pedestal uses cylindrical base (4), and the center of the cylindrical base (4) is machined with arc Shape centre bore (5), the cylindrical base (4) are bonded and fixed on embedded basic (1) by viscose (6).
7. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 2, Be characterized in that, the single-point lofting tools it include tracker target ball (7) He Gangchong (14), the circle of the tracker target ball (7) The centre bore (10) of spherical surface and steel base (8), which matches, merges positioning placement tracker target ball (7), the upper end of steel base (8) Face edge is machined with chamfering (9), and multiple mounting holes (12) are uniformly machined with around central shaft in the lower end surface of steel base (8), It is inlaid with strong magnetic iron prop inside mounting hole (12), the radial direction between mounting hole (12) through steel base (8) is processed There is the observation slot (11) being arranged symmetrically, the height of observation slot (11) is the half of steel base (8), and steel rushes (14) and passes through steel The end of the centre bore (10) of pedestal (8) processed, steel punching (14) is machined with tapered end (13), and steel rushes (14) and centre bore (10) and constitutes Clearance fit.
8. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 4, It is characterized in that, magnetic target ball pedestal (16), the magnetic is installed on the lower part concave profile (17) of the stator lower ring plate (15) Tracker target ball (7) are placed on property target ball pedestal (16).
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