CN113477976A

CN113477976A - Blade drilling method and support

Info

Publication number: CN113477976A
Application number: CN202110862687.XA
Authority: CN
Inventors: 杨波; 李海光; 姚轶; 季九军
Original assignee: Sinomatech Funing Wind Power Blade Co ltd
Current assignee: Sinomatech Funing Wind Power Blade Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-10-08
Anticipated expiration: 2041-07-29
Also published as: CN113477976B

Abstract

The invention provides a blade drilling method and a bracket, wherein the blade drilling method comprises the steps of placing a drilling machine to a preset position; establishing a horizontal plane by using a laser tracker, and placing the tracks of the plurality of supports to be positioned on the horizontal plane; placing a plurality of profile plates of the support to the track, detecting and adjusting the distance between the plurality of profile plates by using a laser tracker, wherein each profile plate comprises a blade binding surface and a plurality of positioning holes, and the shortest distance between each positioning hole and the blade binding surface is a fixed value; the rotary drilling machine rotates, points are respectively collected on a rotary disc and a rotary arm of the drilling machine by using a laser tracker to form two circles, the connection line of the central points of the two circles is used as the axis of the drilling machine, and a three-coordinate system is established by using a horizontal plane and the axis; arranging target balls of the laser tracker in the positioning holes, and adjusting the position of the profile plate according to the coordinates of the target balls; and placing the blades on the binding surfaces of the blades and drilling holes. The blade drilling method is simple and convenient to operate and high in positioning accuracy.

Description

Blade drilling method and support

Technical Field

The invention relates to the technical field of drilling, in particular to a blade drilling method and a support.

Background

After the wind power drilling machine is installed, the axis of the blade and the axis of the equipment need to be debugged in a tolerance range by using a support, the currently used mode is tape measure, the support is debugged by taking the ground level as a reference, the large installation error debugging process is complicated, whether the deviation between the axis of the blade and the axis of the equipment is in the tolerance range cannot be confirmed, only through trial drilling, and the approximate precision can be realized by debugging the first group of supports through the thickness data of the inner wall and the outer wall of the blade root.

Disclosure of Invention

The embodiment of the invention provides a blade drilling method and a support, which at least solve the problem of complex positioning operation and poor precision in the related art.

According to an embodiment of the invention, there is provided a blade drilling method, including the steps of:

s1: placing the drilling machine to a preset position;

s2: establishing a horizontal plane by using a laser tracker, and placing the tracks of the plurality of supports to be positioned on the horizontal plane;

s3: placing a plurality of profile plates of a support to the track, detecting the distance between the profile plates by using a laser tracker, and adjusting the distance to a preset distance, wherein each profile plate comprises a blade attaching surface and a plurality of positioning holes, the blade attaching surface is used for attaching and supporting a blade, and the shortest distance between each positioning hole and the blade attaching surface is a fixed value;

s4: rotating the drilling machine, respectively collecting points on a rotary disk and a rotary arm of the drilling machine by using a laser tracker, forming two circles by the collected points, connecting central points of the two circles to be used as an axis of the drilling machine, and establishing a three-coordinate system by using the horizontal plane and the axis;

s5: arranging a target ball of a laser tracker on the positioning hole, and adjusting the position of the molding plate according to the coordinates of the target ball in the three-coordinate system;

s6: and placing the blades on the binding surfaces of the blades and drilling the blades by a drilling machine.

Further, in step S3, the deviation between the adjustment distance and the theoretical distance of two adjacent molding boards is within ± 1mm, then the molding boards are connected two by the connecting pieces, and the position data of the molding board is tested again after the connection.

Further, the shortest distance between the positioning holes and the blade binding surface is 50mm, and the positioning holes are uniformly distributed and cover the area, close to the blade binding surface, of the molding panel.

Further, in step S4, the drill is operated to rotate clockwise with a pick point spacing of 20 mm.

Further, after step S5, the method further includes the steps of: and (3) collecting upper side points of each blade binding surface by using a laser tracker, wherein the interval between the collected points is 2mm, the deviation of the collected points and the blade theoretical model fitting is less than +/-2 mm, and the total qualified rate of all the collected points is more than 90 percent.

According to another embodiment of the invention, the support comprises a rail and a profile plate, the profile plate comprises a blade attaching surface, the blade attaching surface is profiled to the blade to attach and support the blade, the profile plate is provided with a plurality of positioning holes, and the shortest distance from each positioning hole to the blade attaching surface is the same.

Further, the support still includes the mount, the mount passes through the gyro wheel movably to be located the track, the mount can be relative the track is along first direction and second direction removal, first direction and second direction are perpendicular mutually at the horizontal plane, the profile board is equipped with waist type hole, the profile board passes through the screw rod and locates waist type hole is fixed in the mount, the profile board can relative the mount is along the third direction removal, the third direction is the direction of perpendicular horizontal plane.

Furthermore, the profiled panel is provided with a waist-shaped hole, and the profiled panel is fixed by penetrating the waist-shaped hole and the fixing frame through a screw rod.

Further, the support also comprises a pressing plate for pressing the panel to fix.

Further, the distance between the positioning hole and the blade binding surface is 50 mm.

Has the advantages that: compared with the prior art, the laser tracker establishes a three-coordinate system, the positioning holes are formed in the profile panel to install the target balls, and the profile panel is positioned through the target balls. The invention has simple operation and high positioning precision.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the arrangement of devices in a blade drilling method according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a structure of a drilling machine according to an embodiment of the present invention.

Fig. 3 is a schematic perspective view of a laser tracker according to an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a stent according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of the respective pick points on the turret disk and turret arm of an embodiment of the present invention.

The names of the parts represented by numbers or letters in the drawings are as follows:

1. a support; 2. positioning holes; 3. a molding plate; 4. pressing a plate; 5. a screw; 6. a waist-shaped hole; 7. a fixed mount; 8. a roller; 9. a track; 10. a connecting rod; 11. a leaf binding surface; 12. a drilling machine; 121. a rotary disk; 122. a first drill bit; 123. a swivel arm; 124. a second drill bit; 13. a laser tracker; 14. a blade.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The embodiment of the invention provides a blade drilling method, which comprises the following steps:

referring to fig. 1, fig. 1 schematically shows the arrangement position relationship of each device, and please refer to other drawings for details.

S1: referring to fig. 2, the drilling machine 12 is set to a predetermined position.

The drilling machine 12 includes a rotary disk 121, a rotary arm 123 provided on the rotary disk 121, and a first drill 122 and a second drill 124 provided on the rotary arm 123.

When the drilling machine 12 is placed, enough placing space for the drilling machine 12 and the support 1 needs to be ensured. In one embodiment, the blade 14 has a profile of 50 meters, the drill 12 has a length of 5 meters and a width of 3.5 meters, and the payout safety distance is 3 meters, which requires an area of 58 meters in length and 6.5 meters in width.

S2: referring to fig. 3 and 4, a laser tracker 13 is used to establish a horizontal plane on which the rails 9 of the plurality of racks 1 are positioned.

In one embodiment, when the rails 9 of the rack 1 are placed, the data are observed by using a monitoring window (the laser tracker 13 feeds back computer display data) by taking the horizontal plane as a reference, all the rails 9 are ensured to be on the same horizontal plane, and the horizontal tolerance per kilometer is ensured to be within a range of +/-1.5 mm.

S3: referring to fig. 4, placing a plurality of profile plates 3 of a bracket 1 to a rail 9 of the bracket 1, detecting a distance between the profile plates 3 by using a laser tracker 13 and adjusting the distance to a preset distance, where each profile plate 3 includes a blade attachment surface 11 and a plurality of positioning holes 2, the blade attachment surface 11 is used for attaching and supporting a blade 14, and a shortest distance between each positioning hole 2 and the blade attachment surface 11 is a fixed preset value.

In one embodiment, the deviation between the adjusted distance of two adjacent molded panels 3 and the theoretical distance is within ± 1mm, then the molded panels 3 are connected two by the connecting rod 10, and after the connection is completed, the position data of the molded panel 3 is tested again to ensure that the data is not changed.

In an embodiment, the shortest distance between the positioning holes 2 and the blade attachment surface 11 is 50mm, and the positioning holes 2 are uniformly distributed and cover the area of the panel 3 adjacent to the blade attachment surface 11.

S4: referring to fig. 5, the drilling machine 12 is operated to rotate, points are respectively collected on the rotary disk 121 and the rotary arm 123 of the drilling machine 12 by using the laser tracker 13, the collected points form two circles, a connecting line of central points of the two circles is used as an axis of the drilling machine 12, and a three-coordinate system is established by using the horizontal plane and the axis.

In one embodiment, the drill 12 is operated to rotate clockwise with a 20mm pick point spacing.

S5: and arranging target balls of the laser tracker 13 in the positioning holes 2, and adjusting the position of the profile plate 3 according to the coordinates of the target balls in the three-coordinate system.

In one embodiment, when the target ball is placed in the positioning hole 2, the support 1 is debugged in the axial direction, the radial direction and the height direction, the target ball is compared with the coordinates of a theoretical positioning point, and the tolerance is guaranteed to be within the range of +/-0.25 mm.

In an embodiment, after the debugging of the molding panel 3 is completed, the laser tracker 13 is used for collecting upper side points of each blade attaching surface 11, the interval between the collected points is 2mm, the deviation of the collected points and the theoretical model fitting of the blade 14 is less than +/-2 mm, the total qualification rate of all the collected points is greater than 90%, and the total qualification rate is greater than 90%.

S6: the vane 14 is placed on the vane abutting surface 11 and is drilled by a drilling machine 12.

Referring to fig. 4, an embodiment of the present invention further provides a support 1 for a blade drilling method. The support 1 comprises a rail 9 and a profile plate 3. The mould panel 3 comprises a blade abutment surface 11. The blade abutment surface 11 is a substantially circular arc surface. The vane abutment surface 11 contours the vane 14 to abut the support vane 14. The molding panel 3 is provided with a plurality of positioning holes 2. The shortest distance from each positioning hole 2 to the blade attaching surface 11 is the same. In one embodiment, the positioning hole 2 is 50mm away from the blade attachment surface 11. The positioning holes 2 are uniformly distributed and cover the area of the panel 3 adjacent to the blade binding surface 11.

The support 1 further comprises a fixing frame 7. The fixed frame 7 is movably arranged on the track 9 through a roller 8. The fixing frame 7 can move along a first direction and a second direction relative to the track 9. The first direction and the second direction are vertical to each other in a horizontal plane. The profile plate 3 is provided with a kidney-shaped hole 6. The profile plate 3 is fixed by a screw 5 penetrating through the waist-shaped hole 6 and the fixing frame 7. In the illustrated embodiment, the bracket 1 further comprises a press plate 4 to fix against the profiled panel 3. The mould panel 3 is movable in a third direction relative to the holder 7. The third direction is a direction perpendicular to the horizontal plane.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A method of drilling a blade, comprising the steps of:

s1: placing the drilling machine to a preset position;

s5: arranging a target ball of a laser tracker on the positioning hole, and adjusting the position of the molding plate according to the coordinates of the target ball in the three-coordinate system; and

2. The blade drilling method as claimed in claim 1, wherein in step S3, the adjustment distance between two adjacent profile plates is within ± 1mm of the theoretical distance, then the profile plates are connected two by the connecting rods, and after the connection, the position data of the panel is measured again.

3. The blade drilling method of claim 1, wherein the shortest distance between the positioning holes and the blade attaching surface is 50mm, and the positioning holes are uniformly distributed and cover the area of the molding board adjacent to the blade attaching surface.

4. The blade drilling method of claim 1, wherein in step S4, the drill is operated to rotate clockwise, and the pick point spacing is 20 mm.

5. The blade drilling method of claim 1, further comprising, after step S5, the steps of: and (3) collecting upper side points of each blade binding surface by using a laser tracker, wherein the interval between the collected points is 2mm, the deviation of the collected points and the blade theoretical model fitting is less than +/-2 mm, and the total qualified rate of all the collected points is more than 90 percent.

6. A support for use in the method of drilling a hole in a blade according to claim 1, wherein the support comprises a rail and a profile plate, the profile plate comprises a blade engaging surface which is profiled to engage the support blade, the profile plate is provided with a plurality of locating holes, and the shortest distance from each locating hole to the blade engaging surface is the same.

7. The rack of claim 6, further comprising a fixing frame movably disposed on the rail by rollers, wherein the fixing frame is capable of moving along a first direction and a second direction relative to the rail, the first direction and the second direction are perpendicular to a horizontal plane, the molding plate has a waist-shaped hole, the molding plate is fixed on the fixing frame by a screw passing through the waist-shaped hole, the molding plate is capable of moving along a third direction relative to the fixing frame, and the third direction is perpendicular to the horizontal plane.

8. The bracket of claim 7, wherein the profiled panel is provided with a waist-shaped hole, and the profiled panel is fixed by a screw rod penetrating through the waist-shaped hole and the fixing frame.

9. The bracket of claim 8, further comprising a press plate to hold against the profile plate.

10. The bracket of claim 6, wherein the locating hole is 50mm from the vane abutment surface.